[nispree]

Greetings
I simulate a rigid Vortex Generator in a channel that worked like a obstacle in flow's path. in laminar regime, comsol could capture Von Karman vorticities. now I want to model this situation with Turbulence model to prove that laminar and turbulence results are same and we can use laminar equation. but when I run turbulence model in this velocity ( Re = 1000 which regime is laminar), comsol can't capture any vorticities.
channel dimension: 5mm * 75 mm
RVG is located in 15mm far from inlet, and it's dimension: 0.2mm * 4mm with attack angle of 45 degree.
inlet velocity= 1.71 m/s
fluid is air (gas)
anyone can help me to do this project. thanks for ur attention.