%0 Journal Article
%T Simulation Study of Bionic Jetting Direction Influence on Drag Reduction Effect
%A Gang ZHAO
%A Hua-lin ZHAO
%A Hai-sheng SHU
%A Dan ZHAO
%J Advances in Natural Science
%D 2010
%I 
%R 10.3968/928
%X By imitating the jetting flow feature of shark gills£¬a bionic jetting model is established by arranging round outlets on a flat plate. The drag reduction effect under different jetting directions are explored using numerical simulation method when the main flow field velocity was 20m/s and the reasons of drag reduction are analyzed simultaneously. The results of simulation showed that£ºdifferent jetting directions affecte the wall shear stress and static pressure of flow field which result in the changing of viscous resistance and pressure drag; the bionic jetting has the best drag reduction effect when jetting direction angle is 30 degrees; under different jetting direction conditions, the main reason of drag reduction is the substantially decreased pressure drag. Key words£ºbionics; drag reduction; jetting flow; numerical simulation; viscous resistance; pressure drag
%K bionics
%K drag reduction
%K jetting flow
%K numerical simulation
%K viscous resistance
%K pressure drag
%U http://cscanada.net/index.php/ans/article/view/928