Experimental study on heat transfer characteristics of synthetic jet driven by piston actuator  

作　　者：GAO Shan ZHANG JingZhou TAN XiaoMing 

机构地区：[1]Shenyang Aeroengine Design and Research Institute,Shenyang 110015,China [2]College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Science China(Technological Sciences)》2012年第6期1732-1738,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 50276028,51106073)

摘　　要：Experimental investigation was conducted to investigate the impingement heat transfer performance of a synthetic jet driven by piston actuator on a constant heat flux surface. Effects of jet formation frequency, nozzle-to-surface spacing ratio and con- jugation of cross flow were considered. The synthetic jet is of stronger penetration and heat transfer capacity when the piston reciprocates at relatively high frequency. Similar to the continuous jet impingement, nozzle-to-surface spacing ratio plays an important role in the heat transfer enhancement of synthetic jet. The optimum nozzle-to-surface spacing ratio corresponding to maximum heat transfer enhancement is considerably high in the synthetic jet, as compared to that in a continuous jet, which indicates that the synthetic jet introduces a stronger entrainment and more vigorous penetration in the surrounding fluid. The convective heat transfer capacity is enhanced significantly under the conjugate action of a synthetic jet and cross flow in com- narison with their individual action.

关 键 词：synthetic jet impinging cooling cross flow heat transfer 

分 类 号：TK124[动力工程及工程热物理—工程热物理] V231.1[动力工程及工程热物理—热能工程]