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Questions tagged [meshing]

27 questions
17
votes
5 answers

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 companies (as it is considered not to be an interesting…
Bérenger
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4
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2 answers

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 articles where they mention a C topology to mesh the…
efirvida
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4
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2 answers

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 these two parameters: growth rate (r) initial…
teepee
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3
votes
2 answers

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 standard properties of water I have a Reynolds…
Gesetzt
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2
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2 answers

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 both a 30 degree Flat Root Spline shaft, and a 30…
Burt_Harris
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2
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2 answers

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 Roark's Formulas for Stress and Strain, which has a…
mattsons
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2
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0 answers

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 find a good enough mesh for a specific task,…
Theodosis Koutsoukos
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2
votes
1 answer

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 Module(Diametral Pitch)(P) = 3, Teeth(N) …
Steven
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1
vote
2 answers

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 elements, then by refining the mesh size we…
Rameez Ul Haq
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1
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0 answers

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…
Sharath Chandar
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1
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2 answers

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.
user3408085
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1
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1 answer

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 partition, the longer it takes. After partitioning into…
Tanner
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1
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3 answers

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 a global property? Also, what does topology mean…
GRANZER
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0
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1 answer

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 behavior. In one instance, I noticed that one of these blocks…
Julian Grohmann
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0
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0 answers

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 ethernet connection? I have a concrete floor/ceiling…
pro100tom
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