Questions tagged [ansys]

Anything related to ANSYS, the CAE/multiphysics engineering simulation software for product design, testing and operation.

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How to determine the performance index M for the outer vessel of a vacuum bottle? Need help with objective and constraint selection (Ashby diagrams)

I'm reaching out for assistance and advice regarding a problem I'm encountering in my thermal bottle analysis. I have been attempting to determine the performance index M but facing significant ...
Valentin Prezti's user avatar
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12 views

Hexamesh of a helical coil in ICEM CFD

I am trying to mesh a helical coil segment in ICEM CFD. My approach is to create a 3d block at the start of the geometry, and then extrude it along the center curve: However, when I do this I end up ...
J. Grohmann's user avatar
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42 views

Why the mode frequency is approximate in modal analysis?

I have used the Ansys workbench to carry the modal analysis of one motor stator and under the free modal analysis, the first 6 mode frequency are all zero, it is ok because of the first 6 mode does ...
fhrl's user avatar
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Determine shockwave location in Ansys Fluent

how can I find the shockwave location in Ansys fluent for an aerofoil please? I couldn’t see a shockwave location option in the plots but I’ve seen it being plotted in papers, so it must be possible?
MooreA's user avatar
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Converting data from Chaboche material model from ABAQUS to ANSYS

How to minimize differences when using Chaboche model in ABAQUS and in ANSYS. For example as I've noticed – in ABAQUS one has rate-dependent plasticity model, but in ANSYS it is rate independent ...
Rejnold's user avatar
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In Ansys ICEM CFD, what do these "cube" symbols on the midpoint of block edges mean?

When I was meshing a helical coil, I've noticed these "cube" symbols located at the midpoint of a the block's edges: Blocks with these symbols tend to have a lot of strange/unpredictable ...
Julian Grohmann's user avatar
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Preparing data for Chaboche Model in ANSYS

Can i transfer somehow my hysteresis data to ANSYS Chaboche model if the hystereses are not connected? How to properly defined it in ANSYS if I have Ramberg-Osgood prediction equation? What should I ...
Rejnold's user avatar
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Sharp Edged Pipe with Negative Pressure

I want to calculate the 2D pipe flow with sharp edged contraction pipe (below figure). The fluid is water, the model is steady state k-epsilon. The boundary condition is velocity inlet (8.47ft/s = 2....
Kinnikuman's user avatar
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39 views

How to set FLUID220 elements to PML in Ansys Mechanical (APDL command)

I am working on an acoustic simulation in Ansys Mechanical (2022 R2). I want to set a volume to Perfectly Matched Layers (PML) to inhibit reflections and absorb all incoming acoustic energy. As I am ...
Highlight2022's user avatar
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Display Pressure coefficient for multiple points at across the span line of an airfoil in fluent

Learning to use ANSYS Fluent as part of my computational engineering course I have previously modelled a 2D wing and been abled to XY plot for the pressure coefficient against x coordinate. my ...
Xray25's user avatar
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Which ANSYS modules do we need if we want to do the coupled simulation of motor?

There are more than electromagnetic field in real motor running, for example, the electromagnetic field will couple with temperature field and the fluid field of cooling fluid will affect the ...
fhrl's user avatar
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Ansys: Transient Thermal Analysis using Step Selected Element Birth and Death

I am trying to model the 3d printing process, where one bead of filament (represented by one element) is printed at a time. To do this, I am creating a geometry of 3 cube elements (block1, block2, and ...
Tyler's user avatar
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Mesh convergence and its affect on results

Let’s say I had a mesh with 10000 nodes, then made another with 13000 nodes, why would the finer one give me slightly different results to the other even if it appears like results converged? Also, ...
Conner's user avatar
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What is the best way to simulate residual moisture evaporation off of a polymer sheet in Ansys Fluent (or something similar)

I will provide more information. I am trying to simulate residual moisture evaporation off of a polymer (let's say a thin film). I tried using VOF model but I do not see an option that allows me to ...
kobo's user avatar
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Pressing a fluid onto a structure in ANSYS Fluent

I have a spefific problem which I tried to solve with Ansys Fluent and Transient Structural but I did not manage to get a solution so far. I am happy for any kind of help. I want to press a block of ...
Chris's user avatar
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Get Node Numbers to Variable

I am using Andys APDL. I want to create Beam Element by entering Node numbers. Nodes numbers selection is through option “by location“ Then I don’t know how use them in element creation command i.e. E,...
Rehan Jamshed's user avatar
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Deleting pinned datum points in Ansys SpaceClaim

In Ansys SpaceClaim, "pinned" datum points/axes seem to be automatically created when switching to sketch mode with enough features selected to create what amounts to a coordinate system (...
Dmitri's user avatar
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Employing a deforming mesh, inlet, and no shear wall in ANSYS

I am interested in running a simulation in ANSYS Fluent (or CFX, whichever is more useful) that combines the following. Update: A rotating wing in the air, similar to a turbine blade. After ...
WnGatRC456's user avatar
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How to determine time taken for tyre to deflate using CFD analysis?

I am working on my final year project, and am at a point which requires us to deflate a tyre in 0.8 seconds. This needs to be simulated using CFD. We have drilled a hole into the rim and attached a ...
Sheraize Pillay's user avatar
3 votes
3 answers
2k views

Non-Linear Analysis Convergence Problem in Ansys

I am currently conducting a static structural analysis study in Ansys and encountered convergence prolems. I have a very large thermal gradient (almost 600°C) as input from a precedent transient ...
hansophyx's user avatar
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Is it possible to extract the prescribed boundary condition and its nodal coordinates in Ansys Mechanical?

Let's say I have 3 boundary conditions and I want to extract the nodal coordinates and the boundary condition value for each boundary condition separately. I tried Ipython scripting and pyAnsys but it ...
Prakhar Sharma's user avatar
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2 answers
251 views

Ansys Mechanical Modal analysis, Parametric materials, mode shape output for each parameter?

I am trying to match FEA results with an experiment, wherein I need to match mode shapes and frequencies. I am testing different models, and I would like to parameterize several material properties. ...
user109527's user avatar
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Workbench Ansys Mesh Convergence study

Is it possible to perform a mesh study using Ansys? So I want to change the mesh size, and show the effect of this on my solutions, any suggestions?
Kanye's user avatar
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2 answers
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Ansys Parameter Editor max characters

I am currently working with the Ansys design modeller and I have a rather complex geometry. In order to compute the required variables for my geometry, I have a very long expression inside my ...
Finn Eggers's user avatar
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Ansys SpaceClaim parameter study

i am working on my bachelor thesis and I am supposed to do a parameter study within ansys SpaceClaim. Basically I have a cross sectional geometry (on paper) and need to do the following steps: ...
Finn Eggers's user avatar
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Why am I getting an ever increasing value of power co-efficient (Cp) with the increase of TSR in Vertical axis wind turbine simulation?

I am trying to get the bell-shaped Cp vs TSR graph in my 2D simulation of the H-Darrieus vertical axis wind turbine (using a sliding mesh model). However, I am always getting an ever increase of Cp ...
MMT's user avatar
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470 views

How to automate "Clear Generated Data" and "Solve" actions in Ansys WorkBench?

Using Mechanical, there is automation and I can record the process, but what I wanted to do is that for it to first clear the generated data, then proceed with solve (whole model - two steps). It ...
Ryan's user avatar
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1 answer
178 views

Vacuum effect in ansys

May i define vacuum as a negative pressure in ansys? This boiler tested for vacuum of 1520mbar.
neuwton's user avatar
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1 answer
155 views

What is meant by Solid Mesh and Surface Mesh? [closed]

Solid Mesh vs Surface Mesh, which method should I choose in simulation studies. What is the geometry behind these meshes. Which mesh gives accurate results?
Ibrahim Omer's user avatar
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How to determine the stability of an aerodynamic shape in ANSYS Fluent

I have the aerodynamic outer mold line file of a drone. The first task of the school project is to verify that the drone is stable. First, I used the 2021R2 version of ANSYS Fluent to try to find the ...
Faito Dayo's user avatar
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1 answer
209 views

Why am I seeing a moment reaction at the supports for these beams in FEM?

Please observe the Finite Element model below, in ANSYS WorkBench, (Remote force behavior = Deformable). Also, please take a lot at the force and moment reactions at the fixed supports. I couldn't ...
Rameez Ul Haq's user avatar
1 vote
0 answers
38 views

Homogeneous magnetic field inside aperture of PCB

I need to create a homogeneous magnetic field of a certain strength across a 10mm diameter opening of a PCB by using a current track on said PCB around the opening. The signal sent through the ...
Swoopoo's user avatar
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3 votes
1 answer
212 views

Why should I use a contact between two glued bodies in FEA when I can directly merge the mesh nodes between them?

So I am using ANSYS to conduct a FEA analysis. I have two options to built a connection between two bodies; first is I can use a contact (like bonded) between the touching faces and the other option ...
Rameez Ul Haq's user avatar
1 vote
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FEA Simulation of CHASSIS [closed]

What are the most accurate methods in static state for simulation of chassis wrt 4 cases: lateral bending, torsion, head on collision and a zero turn. The problem arises when it comes to applying the ...
Yashash Rao P's user avatar
1 vote
0 answers
148 views

How to export 'simplified' geometry from Simulation workspace in Fusion 360 to ANSYS Mechanical?

I would like to export the defeatured version of my design to ANSYS. I tried adopting the following methods but they weren't working out. (https://forums.autodesk.com/t5/fusion-360-design-validate/...
Sharath Chandar's user avatar
2 votes
1 answer
1k views

ANSYS: Why do I have a choice of choosing TOP/BOTTOM under contact/target shell faces?

When ever I try to use a surface to surface contact, i.e. 2D shell elements to 2D shell elements, under the option Contact/Target shell face, either I can pick TOP or BOTTOM. Why is that? How is that ...
Rameez Ul Haq's user avatar
-1 votes
1 answer
462 views

Velocity inlet boundary condition in Ansys Fluent

Ansys Fluent offers a very simplified version of boundary conditions. So if I know the velocity at the inlet, I need not care about pressure and vice versa. What I am having trouble with is that I ...
anshul suri's user avatar
1 vote
0 answers
155 views

UV radiation simulation in ANSYS

I am setting up a simulation in fluent to estimate the UV radiation dosage of an air stream passing through a cylindrical duct with the UV source in line with its main axis. It is a very simple system,...
JC ME's user avatar
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1 answer
51 views

Deformation and stress in moment of hit (Ansys)

This how task goes: i need to find deformation and stress of piston in moment of hit between piston and tool (tool is stationary). Velocity of a piston is (5-7 m/s) and forces are in picture below. I ...
condexter's user avatar
1 vote
0 answers
35 views

Ansys Fluent - Turbulent model and mesh

I am currently working on a project that involves CFD simulation on ANSYS and i need some help as it has got me stuck. I am designing a faucet atomizer and it's functioning is similar to a nozzle. I ...
Siddharth Vohra's user avatar
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0 answers
29 views

Solution diverges for Converging-Diverging Nozzle

I am trying to run a CFD simulation for an ASTAR nozzle but cannot get the solution to converge. These are the steps I took to try and run the simulation. I made the geometry in Solidworks and ...
mojojojo's user avatar
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2 votes
0 answers
137 views

Airfoil meshing using ANSYS

Logged in a little time ago i have a new question. So I am trying to mesh an arifoil geometry using ANSYS meshing. Airfoil number is NACA 84-M profile. Running 2-D simulation my main objective is to ...
Theodosis Koutsoukos's user avatar
3 votes
1 answer
7k views

Using GPU Acceleration in ANSYS Mechanical

I am attempting to solve ANSYS mechanical (via workbench) using GPU acceleration, but I keep getting the following error: * WARNING * CP = 79.594 TIME= 15:40:08 ...
Petrichor's user avatar
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1 vote
1 answer
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How do I import an .inp and an IGES together into Ansys workbench?

I have an .inp file of Ansys that is basically a mesh, that could be imported into Ansys APDL and converting to .cdb file. But ...
FabioSpaghetti's user avatar
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Are the Beam elements created from a 3D polyline in Ansys SpaceClaim also 3D in their DOF?

I have created a 3D polyline and assigned a Beam profile to it. But I don't get the results from my Explicit analysis where this beam is in contact with a shell surface. I am afraid that the Beam has ...
FabioSpaghetti's user avatar
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111 views

How do I add the nodes' IDs and locations that are situated on a helix in space to a set in ADPL?

I have a beam structure in the form of a Helix. How do I add the nodes positioned on this helix using ANSYS APDL ? I need to add the locations and IDs in separte sets.
FabioSpaghetti's user avatar
1 vote
1 answer
446 views

How to create RBE2 between the end edges of a cylinder and end nodes of a beam element in ANSYS APDL?

I have a cylinder with shell mesh. on its axis I have a beam with the same length of the cylinder. I want to create an RBE2 between each end edge nodes of the cylinder and the corresponding end node ...
FabioSpaghetti's user avatar
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1 answer
201 views

ANSYS Design Modeller more significant figures

I need to just get the volume from ANSYS Design Modeller but I would like a higher number of significant figures rather than just 5 (See picture). How do I do this? Thank you for your help!
657933's user avatar
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2 votes
1 answer
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Direct Optimisation - How to Create Time Efficient Study

I made a simulation of this cylinder that is being suspended mid air and held up by 8 rods, 4 on top and 4 on the bottom. The entire model is cooled to 15K I managed to find the forces required for 6 ...
General Stubbs's user avatar
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65 views

Flow Simulation for Laminar Flow in Annular Gap?

Would anyone be able to run an air flow simulation through the following geometry at 100 cc/min? I'm curious if any dead spots occur and if the geometry of the annular gap will produce laminar flow. ...
Gordon's user avatar
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