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Found 50 results

  1. Hello, I am doing a CFD analysis and when I try to export my problem into acusolve I get a segmentation error. The segmentation error pops up when hypermesh says ''Extracting Porosity Model''. any help is appreciated. Unfortunately I cannot share the model due to confidentiality. Toon
  2. Hi Experts, I'm looking forward to perform a full car exterior aerodynamic study. I've done with the tutorilas and implemented the same in my case too. But I'm getting some errors. The tutorial fuile I've been worked is a Plane with Wind tunnel (It does not have wheels. But When it comes to car, there was a need of integrating the wheel. So if there is relevant tutorial / model kindly share it with me. So that I can make the setup according to that file. I'm getting warnings as below when I followed the tutorial file "Plane" The tutorial I've been followed is "CFD-1400: Wind Tunnel Mesh" I'm also attaching the Acutail file for your reference. T3_EXT_Acusolve.bc_warningsT3_EXT_Acusolve.bc_warningsT3_EXT_Acusolve.bc_warnings T3_EXT_Acusolve_bc.warnings T3_EXT_Acusolve.1.Log_acuTail.txt
  3. AcuSolve Introduction Training webinar recording.
  4. HyperViewで流線表示ができることをご存知ないという方も多くいらっしゃるかも知れません。 Sereamlines機能を使うと、流線を書くことができます。 単純にベクトルで表示するよりも判りやすいかと思いますので、ぜひご活用下さい。 HV_Streamlines.mp4
  5. Hello Sir, I am working on CFD analysis of a particular nozzle.... In the case I am getting options to assign all the control cards, But Unable to find option to start analysis in the solver. Application: Engineering Solutions Section: CFD Solver tool : Acusolve Kindly Help me to get the solution Thanks and regards; Mahantesh
  6. My CFD solve is running. I am working on EGR system(exhaust gas recirculation system). Its the thermal analysis. There are two fluid(air & coolant). Goal is to find outlet temperature of fluid i.e. air & coolant. My result is not converging. It's very big modal, nearly 40 million elements are formed. Each time step is taking nearly 30min. Now after nearly 96 hours, 160 time step is reached. Still its not converged. At TS 70, values looks more trendy. And at TS 120, solution was converged its best. But now at TS 160, results are not looking trendy. Now, I want result at TS 120. Is it possible, now solve is at TS 160? And, if any suggestions are there to coverge solve, then please suggest me.
  7. Hi All, Please go thorough the complete video recordings of new features introduced in HyperMesh (HM) Engineering solutions for CFD. Click here to view the HM Engineering Solutions CFD New Features Regards, Kamlesh
  8. Hi @all First, i hope this is the right forum for this topic. If it isn't, please switch. I've to simulate an multiphysics coupled heat transfer + fluid cooling process (like cooling fins or spines). For that case i've to define an heat flux into the base of the solid structure. The heat is flowing through the structure and left the structure on the "water" cooled contact surface. This cause an increase of the fluid temperatur deltaT (T_in-T_out) on the outflow against to teh inflow temperature. The fluid flow is perpendicular to the heat conduction in the solid. Points I've finished: Import complex geometry into ACUCONSOLE (+meshing) Define the global problem description Define the inflow, outflow, heat source (basic BC's) Simulation of the fluid flow through the structure still open Points: Simulation of the heat conduction Define the result of the Simulation (heat cond.) as boundary for the flow simulation As i wrote in the title, at the moment I work with the ACUCONSOLE. Is Hypermesh (with the ACUsolve deck) better for multiphysics like this? How can I define old results as boundary conditions in new simulations? (current temperature/heat flux as input value for the fluid wall) Is it possible to import more than one geometry into acuconsole? (The software always want to delete the previous part when i import a second one) I hope you can help me to solve this problem. best regards Alex
  9. Hi. There is a problem with my case. I created an outer circle with the diameter 0.0074mm and the inner circle is 0.007mm. Create a surface between the two circles in order to generate the boundary layer. The lines from the iges file were deleted after the meshing is OK. I want to create the boundary conditions such as inlet, outlet etc.. I use Tools-edges-find edges to create edges based on the mesh. However, 2 circles are still generated as edges. One can see the blue line and the red line. I don't want Hypermesh to find the red line. How can I do that? Thanks~~~~ 10rows-0.07mm-60deg-200elements.hm
  10. Hello guys, I am undergoing master in university right now and my title of my research is "OPTIMISING THE COMFORT IN MOTORCYCLE HELMET BY THERMAL/MOISTURE MAPPING". It is all about the effect of temperature inside the motorcycle helmet during riding a bike. Therefore, it is related to CFD which will effect the thermal energy inside/outside the helmet. The question is, how should I approach this type of case study using HyperWorks? I would be great if you guys attach some of tutorials. - example of vented motorcycle helmet image attached () plus I tried this tutorial (http://training.altairuniversity.com/analysis/thermal/projects/thermal-analysis-heat-transfer/) using HyperWorks version 13 but I stuck with assigning "Conductivity" Tutorials () Mine () Thanks. Mixi
  11. Dear all, I have to do CFD Analysis (Rigid Body Dynamics) of a Wind turbine rotation, and I have just come across this error message when running an AcuSolve simulation. Attached herewith is my complete file for .Log and .inp does anyone know about for this error? Thanks in advance Best Regards, Addham blade.1.Log blade.inp
  12. Hello, I want to show contour of temperature in such a way that. Temperature above certain specific limit should be transparent. Ex: If a component showing Temperature max & min is 300"C & 90"C. The contour is set from 100" to 90"C. So, temp above 90"C will show red in colour. But in place of red, I want transparent (Invisible or white). Simply I want to edit contour. And I don't know the procedure
  13. Hi! I want to export a heatsink mesh file into fluent. According to the below pictures, a volume of fluid passes through a heatsink using a suction fan located inside the elbow duct. The mesh was produced using automesh and solid map (line drag) for solid and fluid parts. Boundary conditions were defined as figs 1,2 and 3 shows. As figs 4 and 5 show, while I was exporting the final model to fluent, the error says that there is duplicate and mixed element types in my model. What can I do to fix this error and export my model successfully in the fluent? looking forward to receive your kind help
  14. I have meshed a 2-dimensional conjugate heat transfer model in Hypermesh and need to solve it in Fluent. I am not able to get the wall boundary condition between a solid and fluid as a coupled interface. It states in the Hypermesh tips for fluent document that we need to make the wall from ^edges and then when you export it to fluent it should create shadow zone automatically but this isn't working for me. I have tried with simple meshing without 2d BL meshes. I have tried with only one solid body in the fluid air but still I am not successful in getting a coupled wall. I tried it with CFD tetra mesh for a simple body in 3d with ^faces collector and it converted to shadow zone in fluent. Its only a problem with 2d i guess. Kindly help me with this problem and if anybody has a tutorial with a 2d solid to fluid contact coupled wall please do let me know. I need it for my mini thesis and I am just stuck at this part.
  15. Hi, I made a CFD simulation in Hypermesh using AcuSolve. After running the simulation and trying to display the results according to the video posted at the end, I'm required to select a file. However, no .log files are created as on the video and any of the ones created work. Also, unlike on the tutorial, I'm asked to select a Reader, and I don't know which one to use. Can anybody tell me how to make sure .log files (and any others necessary to display results) are created when running the simulation and which Reader to use?
  16. Hello, i try to mesh a Wing for CFD Analysis with VWT. In the Analysis of the Mesh i have a lot of intersections and the automatic fix is not working. The Endplates are out of Solids. The rest of the Wing is out of Surfaces. I deleted the solids and kept the surfaces of the solids but there was the same problem again. How can i remove those self intersections? (see dropboxfile) or Is there maybe a way to trim components with other components and merge the surfaces of those components? Mesh: https://www.dropbox.com/s/vqmqcbc4o0fpayl/FrontWing.hm?dl=0 (CAD modell http://www.dropbox.com/s/fn9f7msqx0cowta/frontwing.IGS?dl=0 )
  17. How to open ".bc_warnings". As every time while giving run, it is asking to check this file before moving further. Regards Rajendra BorgWarner
  18. Hello, I am trying to use TCL code to automate the tetrameshing process due to a large number of individual components needed to be meshed for CFD. I am using a simple right angled pipe and have a variation of code that was given in the "Hyperworks Desktop Reference Guide". I can successfully use the tetramesh process within Hypermesh itself manually, selecting my "Wall" as With BL (Fixed) and my "Inflow" and "Outflow" as W/o BL (Float) and do not have the issues that I will explain. However, when I try and automate the process using TCL code, my "^CFD_trias_for_tetramesh" part is only a 2D mesh. This then results in the following failure when using the AcuSolve job launcher: "No Valid 3D element found in the neighbourhood of a tria element". Whereas, if I was to do this manually, the part would be called "CFD_tetcore001", however it would be a 3D volume mesh. Here is my code: *createstringarray 2 "tet: 21532 1.2 2 0 0.8 0 0" "cfd: 86 0.0035 22 1.2 1" *createmark comps 2 "Inflow" "Outflow" *createmark comps 1 "Wall" *tetmesh comps 2 0 comps 1 3 1 2 Would anyone be able to provide any suggestions as to how to get a 3D mesh in the centre of the fluid. Thanks, James
  19. Hello, What is Nodal initial condition (Dissipation rate value & kinetic value) for Realizable K-epsilon modal? Regards Rajendra Prasad Borg warner
  20. Hi, I've been trying to run a CFD simulation using the Hypermesh solver, however, I always get the same error (ERROR: error occurred executing acuPrep) and I don´t know what it means. Can anyone tell me why this happens and how to fix it? Thanks.
  21. Hi, Can somebody tell me how to decide which solver type to use when exporting a file in AcuSolve? Thanks.
  22. Hello, I am working on automobile component i.e. EGR coolar. Here task is to Cool hot gas emitting out from engine and to send back to engine by using coolar i.e. ethylene glycol. EGR coolar has two fluid gas(hot air) & coolant(Ethylene glycol). Each fluid passing from 1 side. It may be parrallel or counter flow. I am getting inputs from customer like this, I am showing you 2 case as follows: CASE 1: Coolant flowing at 90"C @ 1200l/hr @ 2.5Bar-gauge Exhaust Gas at 450"C @ 150Kg/hr @ 2Bar-gauge CASE 2: Coolant flowing at 90"C @ 1200l/hr @ 2.5Bar-absolute Exhaust Gas at 450"C @ 150Kg/hr @ 2Bar-absolute Hence some time I am getting input value of pressure in bar or absolute. I am giving BC like this: At inlet I am defining pressure and temperature and at outlet negative flow I am giving. But I am not understanding how to value of pressure in gauge and absolute? Regards Rajendra BorgWarner Emissions System
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