合成喷形成的机理分析

合成喷是一种新型喷 ,了解它的形成机理对其设计和应用起着重要的作用。该文讨论了液体合成喷和气体合成喷的形成特点并建立了各自相应的数学物理模型。利用小扰动模型解释了大空间液体合成喷形成的原因 ,通过一个简单的热力学模型探讨了气体合成喷的形成机理。分析认为 :液体合成喷的产生主要是空化效应的结果 ,而气体合成喷的形成机制类似于微型压缩机。与他人实验结果的对比表明 :上述二种合成喷的机理分析是合理的

Analysis of the mechanism of synthetic jet formation

Understanding of the formation mechanisms of synthetic jet, a new kind of jet, is important for design and application. This paper introduces the basic principles of the synthetic jet and develops a perturbation model for liquid synthetic jets and a simple thermodynamic model for gas synthetic jets based on their characteristics. The perturbation and thermodynamic models are used to analyze the formation mechanisms for liquid and gas synthetic jets. The analysis shows that the liquid synthetic jet results from cavitation and the gas synthetic jet resembles a microcompressor. Experimental results are analyzed using the present models whose predictions agree well with the experimental data.