3D Model of an aircraft designed for CFD simulation




I recently recorded a new CFD ANSYS Fluent tutorial for my Youtube Channel – (Watch my video here). The simulation consists of a 3D Model aircraft flying at 1.15 Mach. In the simulation, I used the pressure far-field boundary condition and the K Omega SST turbulent model. The case I created is steady-state.

3D Model of an aircraft
3D Model of an aircraft

The mesh I created contained 11,000,000 cells using the Cut-Cell method and 10 inflation layers. The method has the potential to create a mesh with 90% + hexahedral cells. I recommend to treat the nose of the airplane very carefully when meshing – Maybe create a separate mesh body for the nose. I used 3 meshing body sizes to refine the mesh near the aircraft wall.




The mesh I created for the CFD case.
The mesh I created for the CFD case.
Mesh zoomed In
Mesh zoomed In

One of the main convergence criteria for this case is the drag and lift stabilization in addition to the convergence of the continuity and momentum equations. I would recommend using the density based solver rather than the pressure-based solver, especially that we are dealing with high-velocity compressible flows. Remember to change the density parameter for the air-fluid from constant density to an ideal gas.

Post-processing result of the CFD simulation
Post-processing result of the CFD simulation




To download the 3D Model, please click here: 3D Model of an aircraft

 

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