snappyHexMesh tutorial: 2D airfoil
snappyHexMesh tutorial: 2D airfoil
Embedded Files
1. Get airfoil profile
1. Get airfoil profile
Airfoil profile can be obtained using NACA 4/5 digit airfoil generator:
- Select generator
- Input airfoil parameter
- Keep number of point at 199
- Choose Cosine spacing for a smoother shape
- Select Close Trailing edge
Copy all data in Dat file in the generator for the next step.
2.Generate airfoil.STL tri-surface
2.Generate airfoil.STL tri-surface
To create tri-surface which is later used by snappyHexMesh:
- Download generator below
- Paste data copied in previous step into the Airfoil 199 points sheet
- Copy all data in Airfoil.STL 199 points sheet to a blank text file
- Replace all
\\nwith\n - Save text file as airfoil.stl
3. Generate 3D mesh
3. Generate 3D mesh
To create a 2D mesh, we first generate a 3D mesh then extrude front or back boundary to 2D mesh. To do so:
- Download an the case
- Copy the airfoil .stl in previous step to airfoil_snappyHexMesh/constant/triSurface
- Modify blockMeshDict or snappyHexMesh if needed
- Open a Terminal from case folder airfoil_snappyHexMesh and run
./Allrun
4. Convert 3D patch to 2D mesh
4. Convert 3D patch to 2D mesh
...
5. Run the simulation
5. Run the simulation
...
Download the case and run it yourself. Contact me if you need help and remember to buy me a coffee!
Download the case and run it yourself. Contact me if you need help and remember to buy me a coffee!
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