LES problems for nozzle geometry
 

Hi foamers, I am simulating the flow in a nozzle geometry(see attached file) using the LES turbulence model. The condition for the flow is such that the Re in the throat (the connecting pipe) is 3500, which is a transient flow, however when I simulate I get a perfect laminar flow, which contradicts with benchmarks and RANS simulations for the same problem. I have experimented with different profiles and different LES models but result is pretty much the same. I am really stuck with this problem for more than a month, so I hope I can here some suggestions from you




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