CAJ | 학술논문

在翼型上引入射流，以较小流动干扰对翼型表面绕流进行主动流动控制，从而达到延迟失速、抑制分离、增升减阻的目的。通过数值模拟方法，分析了合成射流中的参数射流偏角、动量系数和无量纲频率对翼型气动特性的影响。结果表明，合理地选择射流参数可以达到抑制翼型流动分离、实现增升减阻的目的，得出了相关参数与翼型特性之间的关系曲线，为下一步射流器的选择与控制提供了一些有意义的帮助。
재익형상인입사류，이교소류동간우대익형표면요류진행주동류동공제，종이체도연지실속、억제분리、증승감조적목적。통과수치모의방법，분석료합성사류중적삼수사류편각、동량계수화무량강빈솔대익형기동특성적영향。결과표명，합리지선택사류삼수가이체도억제익형류동분리、실현증승감조적목적，득출료상관삼수여익형특성지간적관계곡선，위하일보사류기적선택여공제제공료일사유의의적방조。
By introducing jets on the airfoil for active flow control,which can make smaller flow disturbance around its surface, delayed stall,inhibit separation,lift drag reduction are achieved. In this paper,the key parameters of the synthetic jet such as jet an-gle,the momentum coefficient and dimensionless frequency,are studied by using numerical simulation method,in order to find out how airfoil aerodynamic characteristics is affected. The results show that reasonably chosen jet parameters can inhibit airfoil flow sepa-ration to enhance drag lift. The related curves between the relevant parameters of the synthetic jet and the airfoil characteristics are ob-tained in this article,providing some meaningful helps for the subsequent jet selection and control.