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Found 19 results

  1. Hello, I'm having trouble with a CFD simulation. After running it in AcuConsole, the error "Error while executing acuPrep" appears. In Acusolve, this error disappears after specifying the eddy viscosity value, however, I don't know where or how to do that in AcuConsole.
  2. Hello, I am new to acusolve ! I would like to model a simple heated plate case, I meshed the volume of air and the plate already. However when I try to export to AcuConsole some errors occur just as shown below : Can somebody tell me what I did wrong please ? Thanks ! heated_plate.hm
  3. Dear AcuSolve Users, Please find the detailed procedure of mapping AcuSolve CFD results through linear interpolation option. It has a python script attached, a pdf document explaining the process to be followed. This Script can be utilized to get all the CFD results like Velocity, Pressure, temperature etc and map it onto other mesh for further analysis. Regards, Kamlesh Script.zip
  4. Dear AcuSolve Users, Please find the attached material to run AcuSolve in batch mode. Regards, Kamlesh BatchRun_AcuSolve.zip
  5. python: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory AcuConsole requires the standard C++ libraries, version 5 to be installed on the system. These libraries can be downloaded from the various rpm repositories on the web.
  6. AcuConsole uses Coin3D for visualization. Coin3D ( http://www.coin3d.org )requires OpenGL. There are multiple sources of problems with display. 1. OpenGL is not installed on your machine. Try running "glxgears" application as a test. 2. The graphics driver used. On Linux try running /sbin/lspci to see the drivers for your video controller. 3. On Linux, check the following files ( mail it to our support ), /etc/X11/XF86Config and /usr/X11R6/lib/X11/Cards
  7. This issue is caused by SELinux. At the current time, the only way to work around this issue is to turn off SELinux. This typically needs to be deactivated by the root user. Using the GNOME desktop environment, this can be done by running system-config-securitylevel and selecting the "SELinux" tab. Disable SELinux and apply the settings.
  8. Hello, I am getting an error while Pre solving in Acusolve. I am getting error i.e. acuPrep: *** ASSERTION in Function <iopGetFileLineCnt> File <iopFile.c> Line <1368> acuPrep: *** unable to open file <MESH.DIR/MM_2.5L_BS6_TempEff_220518_T1.ExhtGas_ShapedTube_6.tet4.Face_ExhtGas4_Side0.tri3.ebc>; Too many open files acuRun: *** ERROR: error occurred executing acuPrep Can any one tell me why this error is coming & how to sovle it. I have attached .log & .inp file. Please find it. MM_2.5L_BS6_TempEff_220518_T1.1.Log MM_2.5L_BS6_TempEff_220518_T1.inp
  9. hello everyone! I am using HM-CFD programs to do some simulation from AcuSolve. While doing a transient simulation, i figured some GAP between HM-CFD and AcuConsole. I have created a multiplier function on HM-CFD and assigned it to an inlet surface. Then i export the .HM model file to an AcuConsole input file (.inp) to view on AcuConsole. But it seemed that Multiplier-Function-data i created is not appears on AcuConsole (or in .inp) file. My version is 2018 (downloaded directly from Altair connect) Does anyone know about this problem? it is because of me or some software bugs? Appeciate every help. Thank you! My HM model is attached. please view and export to .inp file. transient-heat-transfer.hm
  10. If User's are unable to open a database or if it gives an error like "Unable to create path Marker" then we can say that the database is corrupted. In such cases the data from this corrupted database can be extracted by following the below steps, Install HDFview on the machine (http://www.hdfgroup.org/hdf-java-html/hdfview/) Open HDFview GUI Load the database by clicking on File > Open in the menu bar and navigating to the database location. Select the database and click Open All the data in the database will be displayed in hierarchical format Click on first item in the tree, press Shift and select the last item. All the items in the tree will be selected Right click and select Copy Click on File > New > HDF5 Provide a filename (eg: test.acs) and save the database Scroll down to the bottom to see the new database created (test.acs.h5) Right-click on the new database and select Paste. Click Yes to copy the selected objects You can see all the objects under the new database Save the database. File > Save, then close the HDFview GUI by clicking on File > Exit Rename the new database (eg: test.acs.h5 to test.acs) Load the new database into AcuConsole
  11. Hi everyone, I am doing a project for the subject of aerodynamics and I am using AcuConsole for that. I am finding some problems with the CATIA reader I have installed with AcuConsole, so I am thinking now switching the file format to stl (seems more reliable). The problem I am finding now is that I cannot split the model into different surfaces, to assign the airfoil, the sides, etc. I tried to divide the geometry with the feature angle, changing it from 90 degrees to 0.1 and doesn't allow me to pick up any geometry when I create a new surface group. Could you help me to solve that problem? I attached the files if anyone wants to try. Thank you beforehand. Guillermo Flow Domain.stl
  12. Hello, I am trying to import the pressures on a surface from a file onto my model in HyperMesh. I will need to do this via linear interpolation I believe. I am struggling with a few parts of this, so would like to ask the following questions? Does the surface mesh of the model used in the VWT CFD need to be the same as the surface mesh that I will use in HyperMesh for the optimisation? Or can it be refined/changed after the CFD has been performed and the linear interpolation feature will calculate the correct magnitude of the nodal pressure load? Will the changing of the surfaces (e.g. adding a surface in/moving the surface boundaries) affect the success of being able to use the linear interpolation feature for the surface pressures? Does the nodal pressure file for the surfaces exported from AcuOut need doctoring at all before it can be used? By this I mean do I need to change any spaces to comma's or change the file type from .out to .tpl? Thank you in advance
  13. For example, I want to disable meshing of solid volumes - and mesh only the fluid volumes. In AcuConsole V1.7f and later - under the Volume Mesh Attributes, set the Mesh size type to 'NoMesh'.
  14. If you see an error message such as, "Can't set up a valid OpenGL canvas," "something is seriously wrong with the system!". It might be that you are using VNC for remote display. Unfortunately, OpenGL does not work over VNC, but TurboVNC based on VirtualGL should do the job. Check the following link for more information, https://mailman.coin3d.org/pipermail/coin-discuss/2006-June/006979.html
  15. Hello, I would like to export / output the surface pressures from a VWT CFD to a text file to be utilised in HyperMesh for a topology optimisation using Optistruct. I believe I will need to use AcuSolve's AcuConsole to this. From within AcuConsole I am to use AcuOut. I am having trouble doing so. Can someone offer some guidance. Thank you in advance.
  16. Hello everyone, I am trying to simulate axial fans located behind the radiator of a semi truck in AcuConsole. I have three sets of fans in which one set has its axis similar to global coordinate system whereas the other two sets of fans have their rotation axis inclined to the global coordinate axis. I have tried to run the simulation but I have been experiencing divergence issues. I figured out the reason for this and it appears to be with the axis of rotation of the inclined set of fans. Till now, I have been creating a reference frame where i specify the rotation center as the center of rotation for the fan and then specify the RPM using the angular velocity option along one component (X, Y or Z). This I think is wrong. Could somebody help me out with specifying the correct axis of rotation for the inclined set of fans? Should I specify different X, Y & Z components in the angular velocity section of the reference frame for the fans or should I change the 'Wall Velocity type' to 'Cylindrical' in the 'surfaces' tab, specify the cylindrical axis in AcuConsole? In that case, I was wondering if I should keep the Radial. Axial & Tangential velocity sections to 0.0 m/sec or give them a value? I have attached some screenshots which may help for reference. Thanks, Yatish.
  17. Hello Guys, I was working on my project, for that I have just started with a very simple pipe flow. I have few queries regarding the same and I would be grateful if you will help me to answer my queries. The dimensions of the model pipe are 10 mm in diameter and 25 mm in length. I have done modelling in in Creo Parametric 2.0. When importing this file in Acuconsolve, (at the very first stage) a dialog box opens where I only change the units to "m" from "mm". Now i have defined the inlet, outlet and wall for the model. At inlet I have defined as Average velocity = 10m/s. A outlet as outlet and wall as wall. In volume the material model is used as water. For problem description analysis type is steady state, flow equation is Navier stokes and all the other things are set as it is in default(also for auto solution strategy. Now I have done the volume meshing and run the solver. Now while plotting the results for velocity magnitude and pressure, I am getting very unrealistic answer, like the velocity is 20.474 and the pressure is 7951.421.(I have attached the files) I am not getting to what formula does solver based?? how it calculates the velocity magnitude and pressure?? If for pipe flow we use a simple equation like .. (Flow at inlet = flow at outlet) Then , A1*V1 = A2*V2 Then the Area will be same which gives the velocity as 10m/s, as i have defines the v1= 10m/s as per my analytical calculation. Regarding for the pressure values also I want to know the calculations, weather it accounts for total pressure or only the static pressure. Total pr = Static + Dynamic + (row*g*h)[neglecting this term for our case] Total p. = Pstatic + (0.5*row*(v)^2) Then also I am not getting the results which i am calculating theoretically. 1.) I also want to know about the inlet conditions that, what can be used for pipe flow, (mass flux, average velocity, flow rate or simply velocity in any axis.). 2.) Formula for calculating velocity and pressure. 3.) Losses are being considered in this pipe or not?? 4.) Should I change the units in the beginning to "m" or not while importing the model.(as creo parametric based on millimeter newton seconds. so every dimensions of the model are in "mm" only. With best regards and Thanks, Swapnil
  18. can anyone tell me what is the procedure to make or produce a flow domain around a solid body that i have imported from a CAD platform into hypermesh.
  19. Hi guys, I have been performing an analysis in Acusolve and wanted to see an animation of the points but I cant click on the option Transient Data as the tutorial suggests. When I click build on the seeding panel, the points only appear one time in all the time steps and I cant visualize them moving. The global problem solution was defines as transient using SST and fixed mesh. Also I need to get the drag. How should I get the values to calculate drag or Lift after performing any Steady State or Transient analysis? Thanks in advance
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