本文采用数值模拟方法,研究了湍流空气射流对环境空气的引射特性,包括等温射流和非等温射流情形.结果表明,由于射流不停地引射环境空气,射流"势核"区下游的温度与轴向速度迅速降低;射流引射量的模拟结果与文献中报道的、采用多孔壁技术进行实验所建立的关联式良好符合.
参考文献
[1] | Ricou F P;Spalding D B .Measurements of Entrainment by Axisymmetrical Turbulent Jets[J].Journal of Fluid Mechanics,1961,11:21-32. |
[2] | Hill B J .Measurement of Local Entrainment Rate in the Initial Region of Axisymmetrical Turbulent Air Jets[J].Journal of Fluid Mechanics,1972,51:773-779. |
[3] | Wang HX;Chen X;Pan WX .Modeling study on the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets[J].Plasma Chemistry and Plasma Processing,2007(2):141-162. |
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