Experimental and Numerical Study of Super-Critical Flow Around the Rough Sphere

 

Suzana Linić

Slavica Ristić

Zoran Stefanović

Mirko Kozić

Goran Ocokoljić

 

A work presents the experimental and numerical research on the sphere model with the goal of prediction of a flow behaviour in a presence of the surface roughness. Results indicate the problems and suggest the solution for engineering practice. The similarity of the numerical and wind tunnel flows was reached by an application of а combination of the intentionally introduced turbulence intensity in а numerical flow as well the artificial roughness of the model, for a reason of restricted requirements of the turbulence modelling.

Key words: aerodynamics, wind tunnel, numerical simulation, sphere, rough surface, fluid flow.