Supersonic flow over flat plate
I tried to get the solution for the supersonic flow over a flat plate. After about 700 iterations, my horizontal velocity started turning negative towards the trailing edge and solution became imaginary.
Can anybody please suggest the mistake... |
Re: Supersonic flow over flat plate
Years ago, I solved this same problem, reduce cell size to around 0.01 mm in the flow direction (you can have more than that in the normal direction) and the corresponding time step
|
Re: Supersonic flow over flat plate
>reduce cell size to around 0.01 mm
What if the flat plate is 0.02 mm long? Have you heard of non-dimensionalized variables? |
Re: Supersonic flow over flat plate
and you, have you ever spent 3 month writing a C-programme to solve this problem? and that was 15 years ago, learn to be modest?
|
I will try for it . My cell size is 1.42*10-7 . I have the same problem. Plate length is .01mm with 70*70 grid points.
The code seems to work good results for M=4 . for M>4 it fails and gives me imaginary solutions . Does increase in Velocity has some effects on the grid ? Should i increase the grid points to 80*80 ? Any suggestion will be of great help . Thanks |
Quote:
Maybe you have a sub-sonic outlet boundary, and you need to change it to supersonic boundary type ? |
The outlet is just an extrapolated value from the interior points . So i think thats not a problem
|
All times are GMT -4. The time now is 05:11. |