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Mouton10

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  1. Hello! It seems that it is not possible to specify more than one TEMP or TEMPD load in the TEMP option when defining a static loadstep in optistruct. It is not convenient since it would be nice to organize different temperature zones in different load collectors (for model organization purposes). I looked in the documentation and it seems that the TEMPERATURE Subcase Information Entry does not accept more than one set. Is it possible to put different loadcollector in a LOAD card and specify the LOAD card in the subcase information entry. I think it would require to set the LOADTEMP option to SHAREID in the OptiStruct Configuration File. I am just wondering if there was another way to do it? http://www.altairhyperworks.com/hwhelp/Altair/hw13.0/help/hwsolvers/hwsolvers.htm?temperature.htm Thanks in advance!
  2. Hello tinh! Thanks for your fast reply! I did select the two tips as "W/o BL" in the model I provided. Actually it is mandatory else the inlet and outlet would also have a boundary layer. I checked the elem offset panel and it provides pretty nice tools to do the job. I never explored this panel, thank you for pointing it out! It does the job for a simple case but I doubt it will do the job for what I want to really do within hypermesh. I have a tcl code that automatically mesh a complex piping using the cfd tetra mesh. It seems like the elem offset panel does not provide simple tool to have a tetra meshabe volume representing a fluid inside a complex pipe. I found by trial and error that the behavior I mentionned is reduced as the number of elements in the circumference of the pipe is increased. The skew in the elements completely disappears when the pipe has more than 16 elements in its circumference. I guess that there is something in the boundary layer algorithm that is sensitive. Can anyone try the same operation in hypermesh 13.0 to see if the behavior was corrected. I don't like it because you cannot see this behavior on the surface of the mesh and you need to look inside the pipe to see it. I somehow lost my trust in the cfd tetra mesher since I don't know the real source of this behavior. Thanks again for your help! I also welcome any other potential explanations to this problem!?
  3. Hi, I am using hypermesh to generate CFD tetramesh and boundary layer to model a flow into pipes. I am first working on a simple pipe with an inlet and an outlet. I am using the cfd tetra mesh panel to generate the boundary layer and the tetramesh core. The boundary layer obtained is good for the first couple layers but the elements start to skew at some point which result in a very bad boundary layer mesh. This is extremely disappointing since this is one of the simplest case I can think of. I am planning to use the cfd mesher for a much complex piping case and this kind of mesh is not acceptable. Please help me with this issue. I used hypermesh 12.0.117. I attached a screenshot of the parameters used for the boundary layer. I also tried several other combination of the parameters. I also tried selecting float or fixed boundary layer without success. I also attached screenshots of the resulting elements to illustrate the problem. I also attach a .txt file containing the model of the pipe. (just change de extension to .fem and import it in hypermesh, I had to change extension otherwise the upload was not authorized). The pipe and inlet/outlet components are used as 2d input mesh for the boundary layer mesh generation. Thanks in advance for your help, I really need to make this work! cfd_tetramesh_BL_bug_example.txt
  4. Hello Rahul. Thanks for looking at my issue. Actually I know report templates and how to use them and they can definitely be a workaround for my needs. The parameter browser is also a cool feature! However, I found it annoying because I do not always post-process the same way. According to what I understand, each time I want to refresh a result windows, I would need to save a report template with my current post processing style and reopen the result file using this report template. It would work but I think it would be much nicer to just have an option in hyperview to refresh current window results while keeping the style. I'm sure it would be feasible with a tcl macro using report templates for example. I am sure it would not be very hard to implement such a feature in some future release of hyperview. Thanks for your advices! I really appreciate it!
  5. Hi Prakash! Thanks for your advices. These are great ideas and workarounds and it will try to use them. However, it does not really solve my issue. What I mean by processing style is all the things you can do on a result, (applying contour, scale factor, section view, notes etc... For example, when you have two windows open on the same page , you can click on one window and apply the style of the window to all the others window on the same page. That is what I mean by "style". (See the attached image1) I would like to be able to reload a result file "result.h3d" but keep the processing style the window had before reloading the file. Now, if I click on open result file, it resets all the procesing of the window and I have to do it again somehow. (image2) It would be nice to be able to reload or refresh the results without resetting processing. As I said, the only way i can reload the result of a session without affecting my processing is to reload the session which can be long when I have several windows. I hope I am clearer on what I want to do! Thanks again!
  6. hello! I had the same error on a geom NL problem. I found this info on the troubleshooting section of the radioss implicit user guide. I hope it can help! ********************************************************************************* IMPLICIT STOPPED DUE TO SOLVER ERROR The run terminates with the following RADIOSS message: “**ERROR: RADIOSS IMPLICIT STOPPED DUE TO SOLVER ERROR** ISTOP = -4” Shown below are two suggested workarounds: 1. Check which solve method used in /IMPL/SOLVER. Has the direct solver (BCS) been used in SMP run? If it is, then use another solve method. 2. Another frequent case is when the model is relative large and the available free disk is not large enough. In that case, check the working space free volume (in ./ if TMPDIR is defined). If the issue came from memory management, we could also force RADIOSS to use out-of-core resolution (/IMPL/SBCS/OUTCORE). If with above workarounds this error is still there, then please contact the RADIOSS support team at: radiosssupport@altair.com If BCS or mix solver (using BCS) was used, BCS error IDs will print out on the screen of running shell, please report them to support team. ********************************************************************************* http://www.altairhyperworks.com/hwhelp/Altair/hw12.0/help/hwsolvers/hwsolvers.aspx?implicit_troubleshooting.htm Good luck!
  7. Hello! I am wondering if there is any way to refresh the result in hyperview while keeping the post-processing style used. Currently, I am saving the session (.mvw) file and reopening it everytime I have new analysis results. If I open the result file, hyperview removes all of the post-processing style I used. It is kind of annoying to reopen the whole session just to update a result from one analysis. I wish there was a refresh result button or an option to keep actual style when opening a result file. I am sure it would be easy to implement this as the "apply style" option easily tranfers a style to a result window. Maybe it exists but I don't know where. Anyone having the same needs? Anyone knows another trick? Thanks in advance!
  8. I have the exact same error and don't know where its coming from. The model was running perfectly and I remeshed and it create this error! I have no where it comes from.
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