可压缩气体合成射流微喷优化设计  

Optimization Design of Compressible Synthetic Jet Flow

作　　者：丁英涛[1] 刘汝卿[1] 李博[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《北京理工大学学报》2012年第2期150-153,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(60843005);北京理工大学基础研究基金(20070142018)

摘　　要：借助Fluent软件,基于标准k-ε湍流模型和PISO算法,采用动网格方法构造动边界条件,在可压缩模型下,对二维、黏性、非定常气体合成射流微喷的频率特性及影响射流性能的3个关键因素(驱动频率、振动膜峰值速度和喷口尺寸)进行数值模拟,为合成射流微喷的优化设计提供了依据.结果表明,在可压缩模型下,合成射流微喷的频率特性仿真结果与理论计算结果较吻合,验证了其在可压缩气体模型下仿真的必要性;同时,对任一给定的合成射流微喷,驱动频率和喷口宽度存在最优值.Two-dimensional compressible gas synthetic jet flow has the properties of viscous and unsteady.Based on the standard k-ε turbulent model,numerical simulation of the built compressible model was performed using dynamic mesh approach and the software Fluent.To optimize the performance of synthetic jet flow,its frequency characteristics,actuation frequency,amplitude and orifice parameters were analyzed.The results show that the simulated frequency characteristics of compressible synthetic jet is more consistent with theoretical ones,which demonstrates the rationality of the compressible gas model.It also indicates that there exist the optimum frequency and orifice width to reach the maximum velocity of given synthetic jet.

关 键 词：合成射流微喷 可压缩模型 数值模拟 优化设计 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] TN4[电子电信—微电子学与固体电子学]