摘要
研究了压电合成射流驱动器(PSJA)的4种不同孔型结构与出口射流性能的关系。基于雷诺平均法数值仿真了不同孔型的PSJA流场分布特性,分析比较了其出口射流速度分布情况。通过比较发现,锥形出口驱动器的射流最集中,横向扩散最少,纵向速度最大,是一种较理想的出口形式;而圆弧形出口驱动器由于横向扩散严重,纵向传输能力最弱,基本无法实现连续的射流。对于直口和阶梯形出口的PSJA,其出口射流沿中心线的分布规律及速度大小都基本重合。
The performances and constructions of four PSJA with different orifices are presented.Based on RANS,the flow field distributions of the four kinds of PSJA are discussed.Data of PSJA with different orifice constructions are compared.Cone orifice has the best effect of the four kinds of constructions for its outflow concentrated strongly with less diffusion.On the opposite,the round orifice with great diffusion can＇t form continuous flow.As for the PSJA with straight and the cone-straight orifices have the same velocity distribution shape of the jet.
出处
《压电与声光》
CSCD
北大核心
2012年第2期226-228,232,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(90405008
10772081
90605003)
关键词
合成射流驱动器
孔形结构
雷诺平均法
数值模拟
流场分布
synthetic jet actuator
construction of orifices
RANS
numerical simulation
flow field distributions
