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December 29, 2010, 00:21 |
De Laval nozzle
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#1 |
New Member
Fayaaz Hussain
Join Date: Dec 2010
Posts: 12
Rep Power: 15 |
Hey Guys I'm currently trying to simulate flow through a de laval nozzle to show under expansion, over expansion and barrel shocks etc. I used GAMBIT for meshing..I am totally new to CFD as I'm currently a undergrad student so forgive my ignorance. I'm able to get the desired results for a mesh with interval size 0.5 with inviscid and laminar flows that too with third order discretization. Results diverge for second order discretization. When I try for a mesh with 0.1 interval the results diverge for all orders of discretization.
Can anyone please help?? |
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December 29, 2010, 02:27 |
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#2 | |
New Member
Alexey
Join Date: May 2009
Location: St.Petersburg, Russia
Posts: 23
Rep Power: 16 |
Quote:
But may be the reason is other. If you use explicit time scheme then you should keep stability Courant condition So when you have reduced dx (keeping dt=const) this condition could be broken. |
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