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ydigit

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ydigit last won the day on August 11

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  1. ydigit

    Better CPU

    As Inspire Cast scaling is good for 4 cores, I would go for the the i7 with more frequency. As those 10 cores of i9 are unlikely to bring great benefit for Inspire Cast. Unless you want to run two jobs with 4 cores each.
  2. I would avoid using the "default" wall approach and defining everything explicitly in HWCFD or HyperMesh. Also try visualizing in AcuFieldView as HyperView cannot handle all CFD results.
  3. Yes this is definitely possible with AcuSolve. Adding a multiphase approach would increase the run time and also force you to run transient. The easiest "trick" would be to also model the air volume in CAD and then define a new "solid" material with properties of air. This "solid" air will take into account heat transfer between oil and air. You could also run steady state with this approach.
  4. I am unsure if VWT -AcuSolve has the option to change the turbulence model in the interface. You could import the .ACS file in AcuConsole and change the turbulence model there. Export .INP again. Now you could start AcuSolve manually from Command Line or using AcuConsole. Post processing, you will have to deal with manually.
  5. 1. For PFSI you need input in OP2 format (from OptiStruct) with fixed nodes at one end. 2. Not an optiStruct Expert, but you should be able to specify in OP2 output that you want only modes for one component in that file.
  6. Could you please send a screenshot of the directory where this case is running? Do you see MESH.DIR or ACUSIM.DIR?
  7. Last few lines give a hint about the issue. Seems that AcuSolve exited abruptly. In this case probably rerunning the case is the easiest option. There are ways to recover data as well, however unsure if that would be worth, as each iteration is only ~34s.
  8. Yes it would be possible to particle tracing using AcuTrace for you application. You might want to contact your local Altair Support in case AcuTrace setup gets tricky.
  9. However, I did not define as air as a material or "solid". Are these conditions still adequate to simulate the heat exchange (conduction) with an ambient medium or do I have to model air especially? It is adequate to simulate without external air, if you use the BCs above. And should I have to model a cuboid with air as static fluid, does the program automatically recognize that where there is a solid, there can't be fluid, or do I have to define that specifically? You have to define explicitly mediums for all volumes.
  10. Short answers for now, as I cannot open the HM right now. 1. Yes you can use AcuSolve without fluid. You can define Material_Type= solid for Air. This will essentially create a "solid" with properties of air, however only conduction will take place. 2. Contact definition between two surface is default Flux = 0. This means that there is prefect contact between two surfaces and conduction will take place without any thermal resistant (like air gaps or glue). If you need to define free convection, then all AcuSolve preProcessors have options to define those as well.
  11. Please post a screenshot of your run folder for this simulation, so that we can see if ACUSIM.DIR, MESH.DIR folders were generated or not. Also there should be two .Log files. Please post them here, so that I can see what is going on.
  12. The last release of VWT for AcuSolve was with 2018. You download that from connect.altair.com I am not aware of any method to use VWT 2020 for AcuSolve.
  13. Correctly mentioned above, that both will very likely give the "same" results. Also, AcuSolve is a node based solver. Hence the way these nodes are connected is secondary for the solver, important is to have enough nodes in the region of interest. I am not aware of any setting in AcuConsole to get the "nice" looking mesh.
  14. https://altairhyperworks.com/training/new_feature_videos/14/content/cfd.htm Check the second video on solver setup.
  15. https://altairhyperworks.com/training/new_feature_videos/14/content/cfd.htm Check the second video on solver setup.
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