Convergent divergent nozzle
3 Attachment(s)
Dear sir,
I am doind analysis of CD nozzle. with simple example with variation of pressures to study flow behaviour inside. also want to capture shock in it.. i took pressure 1 bar at inlet ,0.54 at outlet(critical pressure ratio). i am not getting convergence and after some convergence i am getting mass flow rate parameter along the center portion of geometry... Weather my BC are wrong or my understading is wrong please guide me. The CCL file,Mesh,convergence plot i am attaching here |
well maybe the simulation is transient? :rolleyes:
have you read the faq and especialy the section for convergence? |
reply
no man please refer CCL>TXT ... analysis is steadystate
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i know you setup the simulation as a steady state.. but is it? ;)
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It may be transient but there are a lot of other things to check first. This question has been asked millions of times so here's my best guide as to how to proceed.
http://www.cfd-online.com/Wiki/Ansys...gence_criteria |
How do you know that's not a converged solution given your conditions?
What are your criteria? |
Hi Mistry,
I think you will not get better convegence than you have achieved. It may be becuase you problem can be bestly described by LES. Regards Mehul |
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