CFD simulation of dimpled sphere and its wind tunnel verification

Vojtěch Spálenský, Dalibor Rozehnal, J. Melcer, K. Kotrasova
2017 MATEC Web of Conferences  
Paper deals with problems of CFD simulating airflow over a dimpled spherical surface and its verification by the wind tunnel measurement. The low-cost simulation approach was applied to be run on a common PC using the commercial software ANSYS CFX. The wind tunnel testing has been performed in the laboratory of aerodynamics at the Department of Air Force and Aircraft Technology of the University of Defence. Measured results of the drag coefficient versus the Reynolds number for smooth and
more » ... d spheres were compared and discussed. Presented simulation corresponds adequately to the experimental results. It can be stated that the CFD simulation is suitable for simulating the flow over the dimpled surfaces similar to sphere. The three-dimensional CFD simulation, based on Reynolds averaged Navier-Stokes equations by the CFD software ANSYS CFX 14.5 [6], was applied to simulate the flow over the dimpled and smooth spherical surfaces. The simulation was performed as a lowcost, on the standard notebook HP Pavilion g7 with the Intel core i7 processor and 8 GB
doi:10.1051/matecconf/201710700077 fatcat:f2ac2h7v4behjp7cw5iuzkc2i4