Kunena Site Syndication http://extend-project.de/ Fri, 24 May 2013 04:54:22 +0200 Kunena 1.5.11 http://extend-project.de/components/com_kunena/template/default_ex/images/english/emoticons/rss.gif http://extend-project.de/ Kunena Site Syndication http://extend-project.de/user-forums/extend-groups/14-special-interest-group-on-turbomachinery-group-forum/505-problem-in-compiling-desitybasedturbo-solvers?limit=6&start=6#628 Hi, I was wondering if anyone has attempted to compile the DensityBasedTurbo package in OpenFoam2.1.1 (or newer). I have built the package in OpenFoam-1.6-extend and have it working, however I would like to use some of these solvers in OF211 (as this is the standard package at my university). Before I undertake a potentially huge task, has anyone else attempted this first? I have completed the first step (which is to update the OF MRF files and remake the OF/src/finiteVolume libso). This required me to alter the opt/OF folder permissions. The next step is to use wmake to make the new utilities/solvers. "wmake libso godunovFlux" runs ok. "wmake libso timeStepping" crashes with the error "/opt/openfoam211/src/finiteVolume/lnInclude/ddtScheme.H: In static member function ‘static Foam::tmp Foam::fv::ddtScheme::addIstreamConstructorTo Table::New(const Foam::fvMesh&, Foam::Istream&) [with ddtSchemeType = Foam::fv::backwardDualDdtScheme, Type = Foam::Tensor]’: /opt/openfoam211/src/finiteVolume/lnInclude/ddtScheme.H:94:9: warning: control reaches end of non-void function [-Wreturn-type] make: *** [Make/linuxGccDPOpt/backwardDualDdtSchemes.o] Error 1" "wmake transonicMRFDyMFoam" also throws an error, however I think it is related to the timeStepping error from above. I realise that DensityBasedTurbo is written and tested for OF1.6-ext, I was just hoping that someone else has tried the same thing that I have and has had some success. Thanks heaps, Trent Sun, 19 May 2013 06:16:07 +0200 http://extend-project.de/user-forums/extend-groups/26-mhd-flows-group-forum/627-constant-electrical-current#627 Hi, I want to apply lorentz force to compel conductive fluid to move throug a channel. The lorent force is created by constant electricl current and constant magnetic field. How can I use OpenFoam to do this project? Sat, 11 May 2013 14:45:22 +0200 http://extend-project.de/user-forums/extend-groups/40-openfoam-singapore-group-forum/39-simulations-of-fluid-structure-interaction-fsi#626 Hi Andrew, Did you add conjugate heat transfer to the basic FSI solver? I am working on the same project. I would appricate if you could help me. Abas Mon, 06 May 2013 20:17:45 +0200 http://extend-project.de/user-forums/extend-groups/26-mhd-flows-group-forum/33-welcome?limit=6&start=18#624 Hi Carlos, as you said, I worked on a solution to simulate with a constant pressure gradient like channelFoam. I create a solver of the basis of pimpleFoam and mhdFoam. In OF 2.2 the channelFoam is replaced with a function called fvOptions (see pimpleFoam). The solver works well for the 2D-Hartmann-case and the 3D-Shercliff-case, but the hunt-case does not work (two walls are insulated and two walls are perfectly conducting -> at the B-File: zeroGradient for two walls and fixedValue for two walls). Do you have any idea why it does not work if I set some walls to be perfect conducting (zeroGradient)? You also said that I could reduce the 3d-Hunt-case to a 2D-problem with periodic BCs. How does this work (cyclic BCs or what did you mean?)? Best regards, Hans Mon, 29 Apr 2013 10:36:57 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/623-combustion-visualizations#623 I am givng a presentation in my turbulent combustion class and was wondering if anyone would be willing to share some video files created from CFD models of the combustion in an ICE. Ones showing Kernal development, the affect of in cylinder turbulence on the flame front, etc. would be great. I have found several on youtube but they aren't exactly what I am looking for. thanks in advance, grant Wed, 24 Apr 2013 06:13:20 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/613-ansys-ic-engine-mesh-into-openfoam?limit=6&start=6#622 Thanks Sasan, I've downloaded it and will look at it once I get my current presentation/paper finished. Wed, 24 Apr 2013 06:01:27 +0200 http://extend-project.de/user-forums/extend-groups/20-special-interest-group-on-ship-hydrodynamics-group-forum/621-tim-and-sinkage-shipfoam-sources#621 Dear Colleagues, I'm going to make a simulation of high Froude number flow around the ship with taking into consideration trim and sinkage. I found difficulties ( pressure instability) with running interDyMFoam with 6dof. I found an information that following simulation can be done with shipFoam, however i was not able to get working neither binaries nor sources of this solver. All links seems to be empty. Is there any available sources or documentation of shipFoam solver. Best Regards Tomasz Gornicz Tue, 16 Apr 2013 10:51:21 +0200 http://extend-project.de/user-forums/extend-groups/33-heating-ventilating-and-air-conditioning-hvac-group-forum/225-hvac-tool?limit=6&start=12#612 Hello Building Simulation Engineers, it is time to give you some news: The HVACTool is still under development and I just released the Update 0.9.2 with some nice features: - Import IFC Version 4 - Import gbXML - Import SketchUp - Import International glazing database for windows - Setup Boundary conditions via Drag and drop - calc U-Value - Perez Sky Diffuse Model - Prediction of hourly solar radiation I setup a Youtube channel: https://www.youtube.com/channel/UC45zVa960j-ttD6DyRwQRTg/videos [video type=youtube]1g2nYygfAIM[/video] [video type=youtube]VAktsXM6948[/video] [video type=youtube]m-wi-iiMhs4[/video] Bye Thomas Wed, 27 Mar 2013 20:40:20 +0100 http://extend-project.de/user-forums/extend-groups/6-openfoam-meshing--mesh-conversion-group-forum/363-lidar-data-point-cloud-or-surface-to-mesh#608 Hi: I don't know if you already solved the creation of an STL file for SHM. But, this is how I create meshes from LIDAR points. Somehow output all you LIDAR information to a txt file. Maybe you can use this set of tools http://www.cs.unc.edu/~isenburg/lastools/ Then in matlab use this script to create the STL file https://www.mathworks.com/matlabcentral/fileexchange/20922-stlwrite-write-binary-or-ascii-stl-file Attached you will see an example of a river in which I am working on from LIDAR dataset (around 8M points). cheers, Christian http://www.extend-project.de/images/fbfiles/images/BedBarBankSTL_3.jpg Sun, 24 Mar 2013 23:21:25 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/607-multi-reactions-chemical-mechanisms#607 Hi everyone, I am simulating the combustion phase (from IVC to EVO) of a diesel engine (sector mesh) using n-heptane as fuel and dieselEngineDyMFoam as application. I obtained a good results in terms of pressure curve (if compared with the experimental one) using chem.inp.1 file in which a single reaction chemical mechanism is implemented. On the other hand, I obtained no combustion (no fuel consumption) using multi reactions chemical mechanisms. I tried two different mechanisms (chem.inp_15 included in openFoam and another one) without success. Any idea? Any help/opinion will be appreciate! Thank you in advance, Giuseppe Tue, 12 Mar 2013 20:44:52 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/606-sliding-interface-for-valves#606 Hi everybody . I am simulating an engine with sonicTurbDyMEngineFoam and simpleEngineTopoFVmesh library... before 3D simulation I want to simulate a 2D case(for testing),So I generated the mesh by using GAMBIT and I created two edges at the sliding interfaces..(2D case) unfortunately when I run the case I have an error : --> FOAM FATAL ERROR: Face 4129 reduced to less than 3 points. Topological/cutting error B. Old face: 2(167 2607) new face: 2(167 2607) old points: 2((-0.01 -0.0075 0.00107703) (-0.01 -0.0075 -0.00107703)) From function void slidingInterface::coupleInterface(polyTopoChange& ref) const in file polyMeshModifiers/slidingInterface/coupleSlidingInterface.C at line 1765. FOAM aborting I appreciate any help.. My case attached.. http://www.extend-project.de/images/fbfiles/files/engine.gz Thanks and best regards, Sasan. Tue, 12 Mar 2013 12:56:02 +0100 http://extend-project.de/user-forums/extend-groups/62-interfoam-solver-problems-group-forum/602-immersed-boundary-method#602 The implementation immersed boundary method In multiphase I got a problem ... can anyone help me.... please :( Thu, 07 Mar 2013 22:20:10 +0100 http://extend-project.de/user-forums/extend-groups/26-mhd-flows-group-forum/585-compressible-les-modelmhd#601 My answer to you is. Why not?! Compressible flow it is possible, but you need to take care about MHD shocks. An MHD high resolution scheme can help you a lot, check the ROE scheme developed for MHD, the HLLD, the AUSM-MHD... And many others.. I have done it in the pass, you can access some of the results here: http://onlinelibrary.wiley.com/doi/10.1002/fld.3781/abstract The best, Carlos Thu, 07 Mar 2013 16:51:17 +0100 http://extend-project.de/user-forums/extend-groups/20-special-interest-group-on-ship-hydrodynamics-group-forum/336-waves2foam?limit=6&start=30#598 Hi again! I am currently trying to set up a 3D-Flume tank with an actuator disc in it and using the waves2Foam contribution to get the stokesFirst waves and the relaxation zones modelled properly. I am quite new to CFD in general and struggling a little bit. What I want to achieve: -Model a flume tank with a total width of 1.6m using a symmetryPlane to only model half of it -stick an actuator disc in the origin with a 100mm diameter as a porous wall with a porosity of 0.4 - vary water depths and inflow speeds - check the wake downstream of the actuator disc What I have done trying to achieve this: - set up a blockMesh comparable to the flow around cylinder case presented in here http://foam.sourceforge.net/docs/Guides-a4/ProgrammersGuide.pdf but changing the inflow direction and making the whole case 3-Dimensional -setting up the relaxationZones and waveProperties, based on the waveFlume tutorial - starting of laminar, need to find a proper turbulence model once everything is running smoothly My problems are: - I do have a working very coarse mesh, but when i try to refine it, it ends up telling me the amount of cells in patch pairs is not consistent. I have checked it multiple times and tried different approaches, but I could not get it running - I get a floating point exception while trying to setWaveFields, when he tries to read the U field, which I cannot figure out how to fix. Are my approaches correct or completely wrong? Should I try to go for a snappyHexMesh instead? If anyone has time to look at some code, I am happy to send it through. Thanks a lot for your help! Thu, 07 Mar 2013 14:36:35 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/569-dieselenginedymfoam-problem#597 I see! Thank you! Mon, 04 Mar 2013 09:33:31 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/548-ic-engine-with-topological-mesh-changes-in-of21x?limit=6&start=12#594 Hi Peter, I've tried for some time to make the 3D geometry created from the simpleEngine case to run but I always have similar errors. I've tried different meshs and none of them succeeded. I don't know how to debug it to understand what is causing the error and mainly how to solve it. I've tried to attach my setup hoping that you can light my way out of this error, but the file size is about 14Mb. Is there a way, apart from spliting it in 12 files of 1.2Mbs to post it here? Best regards, Gustavo. Mon, 18 Feb 2013 00:38:34 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/557-dieselenginefoam-with-topological-changes?limit=6&start=6#593 It is a switch between layering and deformation near TDC. If you set deformAbgle to 20, the mesh will only deform between 20° BTDC and 20° ATDC. Did you checked the units of your mesh? Indeed the faceZone for layering shouldn t be coincident with the cylinderHead. Can you send me the case? I ll have a look on it! Tue, 12 Feb 2013 21:03:37 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/584-nonvertical-valves-in-ice#584 Nowadays I become interested in ICE simulations on imported geometry from es-ice (STAR-CD) and I wonder, how to manage the moving of non-vertical valves (in my current case theangle of valve axis to piston plane is 65 DEG in z-x plane) Does it exist some tutorial case of ICE with nonvertical valves or exists some other information source on this field? I have been searching all day with any useful output, therefore I beg you guys, do you know about something that could help? Wed, 30 Jan 2013 09:30:27 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/583-sonicturbdymenginefoam#583 Hi every body, I have a problem with a case about coldFlow in an engine(sonicTurbDyMEngineFoam )....the exhaust valve opens early (about 0.005 (s) ).Can any one help me???? thanks, Sasan. Fri, 25 Jan 2013 15:12:06 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/575-dieselenginefoam-error#580 I ll have a look on it! Tue, 15 Jan 2013 21:27:06 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/543-how-does-sonicturbdymenginefoam-work#573 Hi if you are beginner in Openfoam , you should read the user guide and programmer guide about the open foam extend,after you must have mechanical or chemical aknowledgment for simulating with sonicTurbDyMEngineFoam. :-D you can download from the www.openfoam.org or cfd-online forum. the user manual translated from english to persian and u can use easyer! Gute Besserung ;) Thu, 10 Jan 2013 17:10:42 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/385-sibs-step-size-underflow?limit=6&start=12#571 One thing I found is that wrong time control makes problem in layer addition/removal operation. In most cases, I liked to use courant number based time control ("adjustTimeStep yes" in controlDict). I guess this is one possible reason why the solver crashes case by case. However, I'm still not sure --) Wed, 19 Dec 2012 19:04:40 +0100 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/568-sprayenginefoam-for-intake-ic-engine#568 Hi everybody Has someone ever simulate the case of intake for IC engine with moving mesh for piston and intake valve? I'm trying to use sprayEngineFoam to be able to continue with injection. Fri, 14 Dec 2012 11:58:26 +0100 http://extend-project.de/user-forums/extend-groups/20-special-interest-group-on-ship-hydrodynamics-group-forum/409-problem-w-ship-resistance-in-interfoamsimplefoam?limit=6&start=18#541 Hello Hannes, just a short note on my progress: When I use div(rho*phi,U) Gauss linearUpwind cellLimited leastSquares 1 ; for the convective term and laplacianSchemes { default Gauss linear corrected; } interpolationSchemes { default linear corrected; } snGradSchemes { default corrected; } I get a 2% deviation from the experimental results, which is the best I could achieve by trying several different settings for these schemes. I think I should be quite happy with this result now. Regards, Pascal. Fri, 26 Oct 2012 09:24:13 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/529-case-setup-in-enginfoam?limit=6&start=6#540 Oh, I just set the endtime to 180 in system/controlDict file. Thu, 25 Oct 2012 16:58:29 +0200 http://extend-project.de/user-forums/extend-groups/77-hpc-scalability-and-large-test-cases-group-forum/487-handling-large-test-cases#528 Have you tried running on Rescale (www.rescale.com)? Rescale's platform provides the ability to massively scale large scale parallel OpenFOAM runs with your own pre/post processor scripts. Specifically it works well for large designs of experiment and optimization. If you'd like to try it out - send me an email and I can provide you with some free hours on your account to test out your runs. Cheers, Joris Fri, 19 Oct 2012 20:09:32 +0200 http://extend-project.de/user-forums/extend-groups/46-ltfd-openfoam-group-group-forum/521-problem-with-install-openfoam-16-ext-in-ubuntu#521 Hi Foamer's After The Download OpenFOAM-1.6-ext [code]git clone git://openfoam-extend.git.sourceforge.net/gitroot/openfoam-extend/openfoam-extend OpenFOAM-1.6-ext[/code] In Many of Guidance about the install OF 1.6-ext in Ubuntu 12.04 Write: The environment variable settings are contained in OpenFOAM-1.6-ext/etc directory, if you followed the instructions it should be in: • $HOME/OpenFOAM/OpenFOAM-1.6-ext/etc If you are running bash or ksh (if in doubt type echo $SHELL), source the $WM_PROJECT_DIR/etc/bashrc file by adding the following line to the end of your $HOME/.bashrc file: • source $HOME/OpenFOAM/OpenFOAM-1.6-ext/etc/bashrc Do not forget to comment the line pointing to the bashrc file of another OpenFOAM installation I should Add the"source $HOME/OpenFOAM/OpenFOAM-1.6-ext/etc/bashrc" To the end line of /.bashrc File?? or i should doing another? my /.bashrc file is hidden in $HOME and when i Type the source $HOME/.bashrc in terminal have this error: bash: /home/yousef/OpenFOAM/OpenFOAM-1.6-ext/etc/bashrc: No such file or directory Please Help me! Thank You Mon, 08 Oct 2012 22:23:36 +0200 http://extend-project.de/user-forums/extend-groups/46-ltfd-openfoam-group-group-forum/518-install-openfoam-ext#520 Luiz Fernando Lopes R Silva wrote: Hello, Yousef Yes, the latest version of the OpenFOAM®-ext is 1.6 and you should download it using git. Still, the latest version of the viscoelastic solver is only available on 1.6 version. Hope I helped. Regards, Luiz Thank Luiz Your Comment is so useful but now have another question that i used Kubuntu 10.04 LTS and OpenFOAM is Installed Default until i change my Operation system from Kubuntu 10.04 to Ubuntu 12.04 i wanna installed openFoam 1.6-ext manualy for that i need the below files Tar –xzf OpenFOAM-1.6-ext.General.gtgz Tar –xzf OpenFOAM-1.6-ext.linuxGccDPOpt.gtgz Tar –xzf OpenFOAM-1.6-ext.linuxGccSPOpt.gtgz Tar –xzf ThirdParty-1-ext.6.General.gtgz Tar –xzf ThirdParty-1.6.linuxGcc.gtgz and i cnat find that files in www.extend-project.de or in sourcefrog.com can help me to install openfoam.1.6-ext on ubuntu 12.04 Danke ;) Sat, 06 Oct 2012 19:58:18 +0200 http://extend-project.de/user-forums/extend-groups/35-integrated-development-environment-ide-for-openfoam-group-forum/13-graphical-variable-visualisation-while-debugging?limit=6&start=6#516 Hi all, we've faced the same problem, so that we developed gdbOF and added graphical debugging also. Please check it: http://openfoamwiki.net/index.php/Contrib_gdbOF Regards. Santiago. Tue, 02 Oct 2012 16:40:31 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/159-attachdetach-boundary-conditions#515 Hi to all I am a university student (master of science) I want a tutorial about internal combustion engine with dynamic mesh and changing topology with Allrun file... can you help me? please help me.... Sun, 23 Sep 2012 11:50:23 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/483-engine-simulation-in-parallel#514 Hello Peter, I also want to model the flow motion in GDI engine by OpenFOAM-1.6-ext. But I'm a beginner for the OpenFOAM, and struggling on the moving mesh of the engine with moving valve and piston. I'm so happy to hear that you do the same job! If you can give me some advice, I will appreciate it very much! (1) which software did you used to generate the mesh which allows moving valve and piston. I used the ICEM to generate the KIVA mesh otape17 and converte it to the OpenFOAM type by the command "kivaToFoam". While the mesh is structued and wll cost much time to generate. (2) I confused to the relationship of the classes in the folder"./src/engine/". In my opinion, there are some classes which have the similar funtion to control the valve and piston moving. I wonder which classes are needed to do the job and the relationship between each other. And how was the mesh motion integrated in the solver such as engineFoam? (3) There is a simple tutorial"kivaTest"in OpenFOAM tutorial, but it just contains the piston moving without the vlave moving.Can I build the model with valve moving based on the tutorial? If can, how can I call the valve moving calss; if not, what I need to do? (4) you said that you built from the LayerAR class and from the the accordionEngineMesh class (taken from engineTopoChangerMesh) a new mesh motion class (GDIMesh). So can you explain how to build it in detail? In a word, I don't know how to do the "building blocks", although I have so much "blocks",i.e.classes for moving mesh in 1.6-ext. I have no idea how to do next and I hope I can get your advice and help! Thank you very much! Best regards Daming Liu Sun, 23 Sep 2012 05:19:44 +0200 http://extend-project.de/user-forums/extend-groups/64-riemann-solvers-for-compressible-flow-group-forum/315-aerofoam#508 Hi I can to compile aeroFoam into OF1.7, but when I want to run a test case from (http://www.aero.polimi.it/freecase/?OpenFOAM_%2B_Code_Aster:Aerodynamic_problems) I can't do it because it gives a segmentation error, any one can help me with this. Thanks FG Thu, 13 Sep 2012 04:10:55 +0200 http://extend-project.de/user-forums/extend-groups/9-openfoam-post-processing-group-forum/504-discrepancy-in-spatial-bounds-on-region-heater#504 Dear FOAMers My question relates to the tutorial: heatTransfer/chtMultiRegionFoam/multiRegionHeater. The region 'heater' is specified as below in *.setSet under case dir: cellSet heater new boxToCell (-0.01001 0 -100 )(0.01001 0.00999 100) cellSet heater add boxToCell (-0.01001 -100 -0.01001)(0.01001 0.00999 0.01001) cellZoneSet heater new setToCellZone heater Thus, the spatial bound along x on this region should be from -0.01001 to +0.01001. However, paraView reports this bound to be (-0.0133 to +0.0133) / see under 'object inspector' ->information! I believe these two figures refer to the same entity; the discrepancy is not negligible. Any comment please? PS: use paraFoam -builtin to visualise the case; paraFoam did not work at my end with this tutorial case! Thu, 30 Aug 2012 21:40:58 +0200 http://extend-project.de/user-forums/extend-groups/54-optimization-with-openfoam-group-forum/503-mesh-handling-during-optimization#503 Hello there, I know the last post is quite some time ago, but maybe there're still people working on it... I'm trying to use the adjointShapeOptimizationFoam for external flows with a moving boundary. Therefore I want to change the mesh during the simulation (in order to get the optimized shape). For moving the mesh I want to use a part of icoFsiFoam, wherein the pressure and velocity field should change the file "motionU". Does anybody know how to do that or has anybody similar experiences? Kind Regards, Matthias Wed, 29 Aug 2012 17:02:19 +0200 http://extend-project.de/user-forums/extend-groups/5-openfoam-installation-group-forum/276-short-tutorial-for-installation-openfoam?limit=6&start=6#498 Hello Felipe for some reason it seems my account dissapeared and it did not let me post, anyway i created a new one, I didn;t want to post it because its a mess, but I have recently successfully installed it from the tutorials in the files themselves. I think this should be known by all newcomers, so if there is a way to bump this post please do ^^. so as long as you can get the files from the git repository (i.e. git clone git://openfoam-extend.git.sourceforge.net/gitroot/openfoam-extend/openfoam-extend OpenFOAM-1.6-ext) you are fine, then open the folder go to: /doc/buildinstructions then pick your OS (ubuntu for us, there is also centos and openSUSE, and follow the file for your installation, and your done! ( I have 64 bit laptop so i guessed that you may need an installation for a 32 bit one). hope it helps B) Kiyo Mon, 13 Aug 2012 04:10:03 +0200 http://extend-project.de/user-forums/extend-groups/44-detached-eddy-simulation-group-forum/59-validation-of-iddes?limit=6&start=12#497 nuTilda http://www.extend-project.de/images/fbfiles/images uTilda.png Wed, 08 Aug 2012 11:43:24 +0200 http://extend-project.de/user-forums/extend-groups/14-special-interest-group-on-turbomachinery-group-forum/442-compressible-turbomachinery-densitybasedturbo?limit=6&start=12#484 Hi everyone, concerning the initial solutions there is a bit of python code I would like to share. Short version: Basically it uses a numpy array of data from the S2m plane and puts it into a funkySetFieldsDict. Longer version: Using field data in a structured S2m grid, the code uses linear interpolation to create a "center node" for each cell of the structured grid. This way each cell can be divided into 4 triangles, which enables easy barycentric interpolation for any point within that triangle. All the interpolation formulas and "point inside triangle checks" are jammed into a funkySetFieldsDict. This approach worked for my purposes on a 2x2 cells S2m numpy grid. I've attached the code with a working example. http://www.extend-project.de/images/fbfiles/files/S2mTo3D.gz Thu, 26 Jul 2012 21:04:21 +0200 http://extend-project.de/user-forums/extend-groups/79-solidification-group-forum/480-test-cases-brainstorming#482 Thanks Tue, 24 Jul 2012 04:27:10 +0200 http://extend-project.de/user-forums/extend-groups/62-interfoam-solver-problems-group-forum/479-specifying-friction-coefficient-in-openfoam#479 Dear Foamers, I am working on dambreak flow in an open channel. can any one help me how to specify manning's roughness coefficient in OpenFoam. I checked manual and code, no success. Is there anyway to specify bottom friction in OpenFoam ? Thank You in advance. :) Regards, Trinath Rao Sun, 15 Jul 2012 08:08:32 +0200 http://extend-project.de/user-forums/extend-groups/74-polymer-processing-group-forum/457-desig-polymer-extrusion-profile-dies?limit=6&start=12#478 Miguel/ Martin; I'm sending you to your personal emails the specification sheet for both polymers, hope this information be enough. In regards your questions Martin; -The draw down velocity is 75 ft/min -The geometry is in inches -The total leght of the main cavity is 0.14859 mts - temperature is 190 C - We design the solid in autocad 2012 and then with inventor we save it in iges format. We believe that do it like that it will be fine Could you tell us the mesher that you are usign? We installed netgen but we couldnt been able to tranfer the neutral file to openfoam format. Could you give us some help with the mesher or the appropiated way to do this in openfoam Regards and thank you for all. Sun, 15 Jul 2012 05:57:20 +0200 http://extend-project.de/user-forums/extend-groups/51-ic-engines-group-forum/474-contract-work#474 Istituto Motori CNR is looking for young people highly motivated to carry out research activities on CFd modeling of i.c. engines by means of OpenFOAM® package. Tue, 10 Jul 2012 12:58:31 +0200 http://extend-project.de/user-forums/extend-groups/44-detached-eddy-simulation-group-forum/460-les-content#471 Hi Anna, Without resorting to isotropic E.V. assumptions, you could look at the ratio of resolved/total stresses as a metric. Of course, the weaknesses of Bousinesq type closure is still present. Mon, 09 Jul 2012 18:58:26 +0200 http://extend-project.de/user-forums/extend-groups/47-special-interest-group-on-openfoam-documentation-group-forum/461-tutorial-documentation-sessions#461 Hello to all of you! During one of the sessions at OFW7 the documentation for the tutorial cases was found to be somewhat sparse. How about doing something like a distributed documentation session sometime? Of course it would be more advantageous if the documentation was on the cases for the upcoming release, but some headstart on organising the documentation-session should not hurt! What I thought about the way of doing that: - Most of the people will be distributed around the world, so a central place probably would not work. But nearly everybody knows how to use Skype or Email. So: Let's have some kind of "Documentation Clusters" wherever people know each other and are locally close. This way an after-documentation-beer for sure is not excluded! ;) - Coordination with the other "clusters" could be done via Email or Skype, as well as exchange if somebody has problems with a certain tutorial. This way we could avoid having 20 documentations on icoFoam and none on interFoam (randomly exemplaric solvers ;) ). Moreover one could tackle eventual problems with understanding a tutorial or another... - We should try to find a common date (preferrably a week-end) so we really could work together distributedly. This of course would be dependent on the release date of the next version of OF-ext... - After some predefined time we could forward the documentations to the other clusters for review. This way the tutorials should be made usable to everyone who knows how to start a case in OpenFoam. So: What do you think of the idea? Who would be interested in taking part? Let me know about your opinions and I'll set up a doodle-poll for finding the right time as soon as the new release is out! Cheers, Bernhard Tue, 03 Jul 2012 17:51:00 +0200 http://extend-project.de/user-forums/extend-groups/56-openfoam-local-user-group-darmstadt-group-forum/250-openfoam-on-hhlr?limit=6&start=6#459 Hello Darmstadt-FOAMers, 2.0.1 is now also available on HHLR (except for some minor features as already in 1.7.1). If you would like to use it, just add [code]export OBJECT_MODE=64 export PATH=/opt/freeware/bin:$PATH . /sw/OpenFOAM/OpenFOAM-2.0.1/etc/bashrc[/code] to your .bashrc (or similar) file. Kind regards, Stefan Tue, 03 Jul 2012 13:28:19 +0200 http://extend-project.de/user-forums/extend-groups/20-special-interest-group-on-ship-hydrodynamics-group-forum/288-interface-refinement-amr#453 Hi! I think you have to incorporate the mesh refinement in the code. See interDyMFoam.C (and compare it to interFoam to see the difference). I have done that to multiphaseEulerFoam, but I'm faced with load balancing issues in parallel case. I think I have to use "fvMeshDistribute"-library somehow, but not sure yet how... Any suggestions? - Timo Mon, 25 Jun 2012 08:59:45 +0200 http://extend-project.de/user-forums/extend-groups/72-acceleration-of-openfoam-on-gpus-group-forum/441-meeting-at-7th-of-workshop#441 Dear All, I will be presenting at 7th OF Workshop our latest results pertaining to OpenFOAM acceleration. If you are interesting to talk in person just let me know so we could arrange a short meeting. best regards, Lukasz Miroslaw Mon, 18 Jun 2012 22:28:19 +0200 http://extend-project.de/user-forums/extend-groups/33-heating-ventilating-and-air-conditioning-hvac-group-forum/435-hvac-solver-with-buoyancy#440 Hi, I used both of OF Version 1.6-ext and OF-2.1.x. Do you mean the correction term via subtraction which is nonzero for changes in density?: - ghf * fvc::snGrad(rhok) Bye Thomas Sat, 16 Jun 2012 09:18:09 +0200 http://extend-project.de/user-forums/extend-groups/16-special-interest-group-on-general-chemistrythermo-group-forum/437-multi-species-mass-transport-library-update#438 Very nice :-) Any plan to have it work on 2.1.x? Also, I'd suggest to leave the author's name in each header: the current statement is makes your copyright and authorship very hard to identify ;-) Fri, 15 Jun 2012 01:17:20 +0200 http://extend-project.de/user-forums/extend-groups/63-fuel-cells-group-forum/301-solid-oxide-fuel-cells-simulation#433 Thanks Ben. I am glad someone else is pushing in the same direction. I am attending the 7th OpenFOAM Workshop (Darmstadt), are you? Keep in touch anyway! María Tue, 05 Jun 2012 13:57:48 +0200