Week 3 - External flow simulation over an Ahmed body.
AIM:- Ahmed body
AHMED BODY :-
Outer Encloser:-
- Right face is located at a distance of 5m from the right side face of Ahmed body along the X axis.
- Left face is located at a distance of 2m from the left side face of Ahmed body along the X axis.
- Top face of the encloser is at a distance of 1 m from the top side face of the Ahmed body along the Y axis.
- The bottom face of the encloser is attached to the bottom face of the Ahmed body along the YZ plane.
- The front and back face of the encloser is at a distance of 0.5 m along the Z axis.
Share Topology :-
Mesh Genration :-
Set Up :-
Boundary Condition :-
Mesh Refind :-
Inner Encloser:-
- Right face is located at a distance of 1 m from the right side face of Ahmed body along the X axis.
- Left face is located at a distance of 0.5 m from the left side face of Ahmed body along the X axis.
- Top face of the encloser is at a distance of 0.5m from the top side face of the Ahmed body along the Y axis.
- The bottom face of the encloser is attached to the bottom face of the Ahmed body along the YZ plane.
- The front and back face of the encloser is at a distance of 0.26 m along the Z axis.
Interference Region :-
Initially there was a huge interference between the Outer and Inner encloser so that the mesh gets overlapped which gets not acceptable so to avoid this we made share topology and get deleted the Interference region that by using the interference command after this we get a good interaction between the Inner and Outer enclosers so that we can get the mesh properly and also share the boundaroies for the uid ow.Here shows the image below.
Meshing :-
In this meshing we can assign the named selection for Inlet,Outlet,Symmetry wall and Car Wall,We can use the different type of meshing process for this model.
In this we follow three stages,
1. Meshing will be done for the outer enclouser choosen as a method of the Multizone and this will create the Hexa mesh,The element size used for this is 0.08m.
Result :-
