[BabakArash]

I am modeling air flow past a circular cylinder. According to the air velocity and the dimensions of the cylinder, the Re number of air flow is about 350. This number, according to the literature is within the critical Re for flow past a cylinder.

I would like to know, which flow regime best describes the conditions in my simulations; laminar for turbulent.


Thanks

[flotus1]

Transitional
The most accurate way to simulate this would be a DNS, and it should be feasible on any modern PC.

[BabakArash]

Originally Posted by flotus1

Transitional
The most accurate way to simulate this would be a DNS, and it should be feasible on any modern PC.

I am using COMSOL to model the air flow. My question is that in case Re number is within transition range, which is the case in my modeling, should I use laminar flow or turbulent flow?

Thanks

[FMDenaro]

Originally Posted by BabakArash

I am using COMSOL to model the air flow. My question is that in case Re number is within transition range, which is the case in my modeling, should I use laminar flow or turbulent flow?

Thanks

DNS (Direct Numerical Simulation) means you resolve the 3d unsteady NS equations using a grid enough fine to solve up to the Kolmogorov scale of the flow problem without any other assumption on the regime of the flow.