Title: Numerical study for flows over porous spheres and cylinders with/without blowing

Authors: Yan-Cheng Ji, Chen-Hsun Huang, Chiun-Hsun Chen

Addresses: Department of Mechanical Engineering, National Chiao Tung University, HsinChu 30010, Taiwan. ' Department of Mechanical Engineering, National Chiao Tung University, HsinChu 30010, Taiwan. ' Department of Mechanical Engineering, National Chiao Tung University, HsinChu 30010, Taiwan

Abstract: This study numerically simulated and experimentally studies three-dimensional flows over porous spheres and cylinders with/without blowing. The parameters are incoming flow velocity Re, blowing ejection velocity and geometry of burner. The simulation of cold flow comprises two parts. The first elucidates the flow behaviours around and behind the burners without air blowing. The second part of the simulation elucidates the blowing effect from burners on the flow behaviours. The flow patterns for each burner with a fixed air ejection velocity (Vw) are described in detail and compared with corresponding experimental measurements.

Keywords: three-dimensional effect; heat transfer; fluid flow; porous cylindrical burner; wind tunnel; numerical simulation; porous spheres; cylinders; flow velocity; air ejection velocity; CFD; computational fluid dynamics.

DOI: 10.1504/PCFD.2008.021324

Progress in Computational Fluid Dynamics, An International Journal, 2008 Vol.8 No.7/8, pp.469 - 476

Published online: 19 Nov 2008 *

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