# Questions tagged [meshing]

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### Meshing of complex geometrical domains

When using the finite element method, I have always used either already meshed domains or very simple ones. From what I've heard, meshing complex geometries is often outsourced to specialized ...
• 281
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### What is a good method (equation) for locally refining a 1D grid at each end?

I have a grid that I plan to discretize in 1D. It extends from 0 to L using N nodes, and I need to refine it at each end. I plan to have something that looks as follows: I have tried the to specify ...
• 141
769 views

### Efficient 3D mesh topology for CFD simulation of turbine blade

I´m developing a tool to generate an openFoam wind tunnel case of a wind turbine. I already have the blade geometry constructed, but I'm really new to CFD and parametric meshing. I found some ...
• 205
115 views

### Turbulence model for low reynolds problem

I'm simulating the flow in a capillary with a sudden expansion. The small capillary has a diamater of 250 µm. The big capillar has a diamater of 1000 µm. My flow rate ist $1\frac{ml}{min}$. Using ...
• 93
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### Flat root spline vs filet root spline: what's the difference

I'm looking at a hobby micro servo, which has a 5mm splined shaft output. Specifically, this is a Tower Pro model SG90 or clone. Close-up photos of the shaft below. I've found online diagrams for ...
• 217
712 views

### How to determine the deflection of a wire mesh under wind load?

I am trying to extend a metal wire mesh over a large distance, while tensioning it to limit the deflection of the mesh due to the wind as much as possible. After doing some research I came across ...
• 21
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### 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 ...
494 views

### Trouble with Base circle and meshing with spur gears

I am a novice who is trying to make some gears. I have followed the formula's but sadly something seems to go wrong and the gear's don't come out right. Below is some dimensions and pictures. Gear 1 ...
• 21
1 vote
1k views

### Why does the mesh size affect my modal analysis results?

The need for mesh refinement in a structural analysis module such as Static or Transient is quite clear; if we want the overall results such as displacement and stresses to be more accurate within the ...
• 1,365
1 vote
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### Shell vs. solid elements for a fatigue analysis using FEM

What are the advantages and disadvantages of using quads (shells) vs using hexas (solid) in my mesh for a fatigue analysis using a finite element software. Thanks.
1 vote
527 views

### What does mesh topology mean?

What is a mesh topology? I have read this term being used in a lot of articles dealing with meshing the computational domain, but could not understand its intuitive meaning. And why is topology called ...
• 347
1 vote
54 views

### My ANSYS model meshing is showing problem where I don't see my model and small blue rectangle appears. Is there any way to solve this?

I'm new to ANSYS and just started using it. I encountered a problem when I click the model option; ANSYS Mechanical opens, but there is this blue rectangle, which is supposed to be big and show my ...
1 vote
201 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/...
1 vote
954 views

### Meshing Complex models in abaqus

I'm trying to mesh a model of a morphing wing in Abaqus and have been running into issues. It was recommended that I partition the model into smaller parts, but it seems that the more I try to ...
• 11
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### Are there other finite element types besides the usual?

By finite element type I specifically mean element geometry. I am aware of Beam/Strut, Quad, Tri, Tet & Hex but are there other types, eg a hexagonal prism, rhombihedral etc.. ?
• 121
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### Mesh part failed in solidworks issue

This assembly is extremely hard to mesh. Even, if I used an extremely finer mesh and took a long time to solve, it still keep failing. This model can be found at https://drive.google.com/file/d/...
187 views

### Unable to do anything with the mesh imported from blender

I made an object in Blender (default cube), then exported it to STL, then imported this STL into Solidworks. Now I see this ...
• 203
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### How to remove a 'mesh edit' item in ANSYS Workbench?

I accidentally inserted a mesh edit item and tried moving a node, but now can't remove it. The context menu doesn't have any helpful options and I don't see any relating tools in toolbars. How to ...
• 155
79 views

### Best Practice for Multiple Zones in ANSYS Design Modeler for a 3D Structured Mesh for Fluent Simulation

I am building a structured mesh in a rectangular domain to model the flow over a wing with impinging jets at the root over the surface in the spanwise direction. I've tried building unstructured ...
• 162
36 views

### Uniform Direction for Line Directions

Despite several similar questions and my efforts, there is still no solution so far. Presently, ANSYS gives Directions to Lines on its own which are flipped even for two collinear lines. As a results ...
40 views

### Need to Align Line Directions Normals Along Specific Coord in APDL

In Preprocessor of APDL, I have built areas which are meshed with shell element and lines meshed with beam elements. I have assigned Sections to Beam elements but when I view them their cross sections ...
74 views

### Setting direction vectors for Lines in ANSYS APDL

I am using beam elements to mesh lines with "pre-meshed" shell areas. Problem is that the ANSYS sets Line Direction vectors on its own. This results in Cross sections assignment flipped from ...
58 views

### Need to Align All Line Normals to Global Direction in ANSYS APDL

I am using beam elements to mesh lines with "pre-meshed" shell areas. Problem is that the line normals are arbitrarily assigned to the lines resulting beam cross sections switched at line ...
38 views

### FEA meshing of irregular geometry

I work on the simulation of sand particles and usually use tetrahedral free-meshing to represent their complex geometries for finite element analysis. I have recently spent some time looking into ...
45 views

### Ansys Mechanical Section Plane Error

I'm attempting to make a deformation analysis for a specific scenario in Ansys Mechanical. Everything seems to be fine, but when I try to use a section plane, the deformed region appears to be 'hollow,...
65 views

### Error message in ANSYS Fluent setup

While trying to run a simulation in ANSYS Fluent, I am getting this error message : Error at Node 0: Normalized key of 26982 is out of range [0, 27030]. This error message comes when I try to run the ...
24 views

### How to preserve edge grading of rotated edges in ICEM CFD?

I have a 2D axisymmetric geometry for which I am generating block-structured mesh in ICEM. I am converting this 2D block setup to a 3D block setup by rotating the 2D blocks using a dedicated option in ...
76 views

### 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 ...
528 views

### Can one connect Starlink router with the Mesh via ethernet cable?

I know that with the Starlink ethernet adapter one can connect to the router or mesh with the ethernet cable. My question is: is it possible to connect Starlink router with the Starlink mesh via ...
• 101
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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, ...
77 views

### Structured trianglar finite element mesh in MATALB

The available triangular mesh in the MATLAB PDE tool box here gives an unstructured triangular mesh. How can I get a structured triangular mesh from the tool box with a similar data structure [p,e,t]. ...
• 101
146 views

### 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?
297 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?