Title :
CFD simulation of flow over the dimpled sphere
Author :
Spalensky, Vojtech ; Horak, Vladimir ; Rozehnal, Dalibor
Author_Institution :
Dept. of Air Force & Aircraft Technol., Univ. of Defence, Brno, Czech Republic
Abstract :
The paper deals with problems of CFD simulating airflow over a dimpled spherical surface and its validation by the wind tunnel testing. 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 dimpled 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 surface and for the evaluation of the drag coefficient for smooth and dimpled spheres.
Keywords :
aerodynamics; computational fluid dynamics; drag; finite element analysis; flow simulation; mechanical testing; shapes (structures); wind tunnels; ANSYS CFX software; CFD simulation; Department of Air Force and Aircraft Technology; Reynolds number; University of Defence; airflow simulation; dimpled spheres; dimpled spherical surface; drag coefficient; laboratory of aerodynamics; low-cost simulation approach; smooth spheres; wind tunnel testing; Aerodynamics; Atmospheric modeling; Computational fluid dynamics; Computational modeling; Drag; Numerical models; Sports equipment; CFD simulation; aerodynamics; dimpled surface; drag; flow separation; golf ball;
Conference_Titel :
Military Technologies (ICMT), 2015 International Conference on
Conference_Location :
Brno
Print_ISBN :
978-8-0723-1976-3
DOI :
10.1109/MILTECHS.2015.7153662
