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Found 18 results

  1. Hello Everyone! I am using the nFX Tools in SimLab 2019.3 to create a simulation environment with SPH Particels. What i want to realise: I just have a cup filled with Oil. It is open on both sides and surrounded by Air and i want the Oil to run out of the cup downwards. To close the system there is a cover around the air volume. I have defined three Materials, the two Fluids Air and Oil, and a Wall Material. The Material specalizsations can be seen in the attachment. I created the three different sorts of Particels in three steps. First i sealed the cup to create the Oil Particels inside the cup and the Air Particels. Then i opened the cup again and created the Container Particels as Wall. Finally i have put these three together. To realise that the Oil runs out of the cup downwards i have created a Domain "Body Force". The problem now is, that during the simulation with nanoFluidX some Oil particels are getting through the Wall Material of the Cup but i Have no idea why. In the video attatched i have visualised the Velocity and the Oil (grey). The cup is not visualized there. These particels are like shooted out of the cup. I have also attatched an STL Model oft the cup and the cover. They are one model. Does anyone have an idea what the problem is or what i am doing wrong? Thanks a lot! Auslaufbecher.avi Cup.stl
  2. 粒子作成のアイコン「Click Particle Creation」を紹介します。一遍に粒子モデルが作成可能になりました。 一般的なギヤボックスモデルを例に示します。ギヤは2つの異なる回転数(Gear1、Gear2)を持つとし、気液二相モデルとします。粒子モデルは以下のように分類されます。 液相粒子 気相粒子 回転運動する固相粒子(Gear1、Gear2) フォークなどの静的な固相粒子 ハウジングの静的な固相粒子 Moving solidsには、ギヤのボディ(Gear1、Gear2)を設定します。ここで選択されたボディは、それぞれ独立した粒子のボディを作成します。異なる回転数を設定するため分類します。選択されなかったボディ(フォークなどの静的な固体)は、自動的にContainerという名前のボディに格納されます。 Cotainerでは、ハウジングの接液面から外側に押し出した粒子を指定層分作成します。ここで作成される粒子もContainerという名前のボディに格納されます。 Solidsでは、固相粒子が表面から内部に対して作成する層数になります。 流体領域は、Free node inside fluidにて、ギヤボックス内の流体空間の点を定義します。流体空間用のモデルは不要です。Fluid Level Using Planeにて気液の界面を定義した後、Fluid1、Fluid2から液相、気相を設定します。 その他、Particle spacingは粒子径、Modelはサーフェスメッシュが格納されたモデル名、User defined model nameは粒子モデルが格納されるモデル名を設定します。 以上より、Container、Gear1、Gear2、Fluid1、Fluid2の5つに分類された相(phase)が作成されます。 SimLabバージョン:2019.2
  3. FIle View --> Applications --> nFXを選択すると、nFX Toolsというメニューが追加されます。 Simlabバージョン: 2019.2
  4. nFXの計算データをモデリングをする際、CAD寸法に基づき寸法の単位をミリとして粒子モデルを作成後、出力時に0.001倍にスケールしてSI単位系にすることがあります。 その際、粒子の座標値データがスケールされるほか、「寸法」に関する入力も同時にスケールされます。そのため、以下の項目は「ミリ」として入力します、 粒子径(Solution Parameters、Basic Settings、Particle Pitchで設定) 参照長さ(Domain、Reference Values、Lengthで設定) 速度[m/s]にはメートルの単位が含まれますが、スケールを考慮せず値[m/s]を入力してください。 .cfgファイル出力後、テキストエディタでご確認いただくことが確実です。 出力時の寸法のスケール(0.001倍)方法 Export and Solveアイコン、Export Options、Geometry Scale Factorに0.001と入力します。 Simlabバージョン: 2019.2
  5. Hello, I am new to Simlab. When I mesh I get these elements with small element edge length. Please refer to the example. How can I avoid them. I tried cleaning up. it ran for 4 hours and simlab crashed. I tried other methods, simlab crashed. How can I clean this up before doing mesh controls or how can I select faces like these using 'select features' so I can give a separate mesh control?
  6. Hi. At a recent Flux conference, I heard that SimLab has very interesting tools for viewing a mesh and I was hoping to use it to observe the meshing of the air in my 3D models, which is an absolute pain in Flux itself. Is there any documentation on how I can open my meshed geometry from Flux in SimLab? Thank you in advance! Romain
  7. Hi, I am trying to run a simple SimLab script in Batch mode on Linux environment. I am getting the error: "hwx: cannot connect to X server". Following is the command that I am issuing - $SIMLAB_SH_FILE -auto fe_modelling_simlab.py -nographics & Is there any parameter that I am missing in the command ? Or is it that GUI environment is required for running SimLab in batch mode? Thanks, Roshan
  8. Hi all, I am running a script in simlab using batch mode but after the operation is completed, simlab automatically opens up the graphical window. Everytime i need to close it manually after execution. I am using simlab 2017. This is my .bat file content >> SET CAE_HOME="C:/Program Files/Altair/2017/SimLab2017" SET PROJECT_DIR="D:/vipin" %CAE_HOME%\SimLab.bat -auto %PROJECT_DIR%\createMesh.py –nographics what could be the reason?
  9. Hi, When I am trying to automate meshing in SimLab for .slb file, it is asking for Geom file (.x_t) which is kept in same folder as .slb and even .slb file contains only Geometry (imported CAD from the same parasolid file). Now, I am left with two option - 1. Either automating >> directly importing parasolid file. > Renaming each component and then meshing. (which is more time consuming than 2nd option). 2. Importing .slb file >> giving Geom file > then meshing. (lesser time consuming than 1st ) But the problem with second option is, I dont know how to auto feed Geom file, initially only or in code. If this whole process runs in graphic mode, it will pause and ask to select Geom file. But, if it is nographics (batch mode) the simlab goes non responding, until it is killed by task manager.
  10. Hi, I run a script in simlab (Project-->Autoplay-->Script) after importing the parasoild into it. But as the script meshes the bodies, cmd window pop ups for each activity (like meshing). Can i run this script in background using batch and avoid such pop ups? If yes, Please guide !!!
  11. 節点を要素エッジ上をスライドするように移動させるには、FEM>>MoveのElement Edgeを使用します。要素エッジと移動させる節点を選択し、Maximum distanceに移動距離を入力するか、あるいは、スライドバーをドラッグします。
  12. I can create a macro to record a process of creating solid pretension on a bolt. But i wish to run that macro on different bolts of different length and different position in coordinate system. Basically completely different bolts. For that i need to define different planes for each bolt. And i can define planes by using face groups by using one of the simlab utility functions. But i cant figure out a way to incorporate that utility function to create planes in the macro that i have recorded. Attached image for better understanding. I wish to insert the variables "PlanePoint1, PlanePoint2, PlanePoint3", which i get from utility function into the place of numerical value of "PointA" and so on. Is it possible?
  13. Dear all, Please do register for the webinar on September 27th, 2017 (Wednesday) at 11 AM Headlamp modeling in SimLab and CFD analysis using AcuSolve Register on the link below: https://register.gotowebinar.com/register/8360683504294244097 Regards, Kamlesh
  14. Greetings, i want to do a topology optimization for heat transfer with Simlab cause of my master thesis. To sum up my general content of my thesis: There should be a topology optimization of an electronic housing for better heat transfer to the ambient. The housing will be manufactured by additive methods (SLM). First i am trying to build some simple models to test the general form of the results and to check my constraints. For this i built a model, the topology optimization is already done (picture): On the top plain is a heat flow given and on the lower plain a constant temperature. I used Optistruct with steady state heat flow, default material parameters/optimization parameters. Objective function to minimize is the thermal complaince while keeping the mass fraction of the design area betweeen both top and bottom plains under a specific value (e.g 0.2). Design area has the shape of an pyramid with cutted top. I want to generate structures which evenly transfer the heat from a small area(top) to a wide area (bottom). This result picture (opened with hyperview, last iteration and showing iso lines of the element density) shows that the aspect of reducing the mass working but the structure seems not to spread the heat evenly. Which constraints i need to adjust to get the intended results? Two other questions: Is it not possible to generate a material with anisotropic heat conductive? And how to extract the generated topology as a stl, step or other file to load it into a CAD Software. At the end i need to put in these topologies into the housing. Thanks for your help!
  15. Hi, I have created few small scripts in SimLab which I execute using "Project --> Play --> Autoplay" . Is it possible to create custom plugins or buttons in SimLab GUI to run scripts? Thanks, Roshan
  16. Hi, I was trying to script meshing of bodies with a common sub-string in their names. I can use the below utility. But I cant figure out, how to use the variable in solid meshing syntax? Simlab Utility - var SubString1=["Bolt*"]; var EntitiesName29358=[]; SimLabUtility.GetBodiesWithSubString(SurfaceBodyName, SubString1, EntitiesName29358); Solid Meshing Code - I am trying something like this, but this doesnt works. //SurfaceBodyName is a variable storing model name var SolidMesh=' <VolumeMesher UUID="83822e68-12bb-43b9-b2ac-77e0b9ea5149">\ <tag Value="-1"/>\ <Name Value="VolumeMesher1"/>\ <SupportEntities>\ <Entities>\ <Model>'+SurfaceBodyName+'</Model>\ <Body>'+EntitiesName29358+'</Body>\ </Entities>\ </SupportEntities>\ <MeshType Value="Tet10"/>\ <AverageElemSize Value="3.5"/>\ <MaxElemSize Value="Default" Checked="0"/>\ <InternalGrading Value="2"/>\ <MinQuality Value="0.07"/>\ <LinearQuality Value="2"/>\ <MaxQuality Value="1"/>\ <QuadMinQuality Value="0.001"/>\ <QuadQuality Value="0"/>\ <QuadMaxQuality Value="1"/>\ <CadBody Value="0"/>\ <AdvancedOptions>\ <MeshDensity Value="0"/>\ <CreateVol Value="1"/>\ <Assembly Value="0"/>\ <PreserveFaceMesh Value="2"/>\ <MeshAsSingleBody Value="1"/>\ <Retain2DSurfaceBodies Value="0"/>\ <PreserveSurfaceSkew Value="55" Checked="0"/>\ </AdvancedOptions>\ </VolumeMesher>'; Simlab.Execute(SolidMesh); How to use the variable in place of body names?
  17. Attached PPT contains the tests to be done to verify the Creo configuration in SimLab. SimLab_Creo_Configuration_Test.pptx
  18. DEAR ALL, Now i am using SIMLAB 14.3. upgraded from 14.0. in SIMLAB 14.0 version, i can change the mouse settings by [ Edit--> preference--> system--> mouse settings--> hypermesh] BUT in SIMLAB 14.3 Version, i cant find the EDIT OPTION. so i dont know how to change the mouse setting. i want to use hypermesh mouse settings in SIMLAB. which is convenient for me. so could anyone please help me to solve this.? thanks in advance. best regards. Guru
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