本文对流动雷诺数Re=5990的空间发展的气固两相湍流射流进行了直接数值模拟.其中对流场的求解采用具有四阶精度的紧致差分格式,对颗粒场的跟踪采用拉格朗日方法.结果表明,湍流拟序结构逐渐由对称模式发展到非对称模式;较小Stokes数的颗粒在流场中均匀分布,较大Stokes数的颗粒沿横向没有明显的扩散,而Stokes数为1的量级的颗粒则大量聚集在大涡结构的外围.
参考文献
| [1] | Albertson M L;Dai Y B;Jenson R A et al.Diffusion of Submerged Jets[J].Transactions of the American Society of Civil Engineers,1950,115:639-664. |
| [2] | Bradbury L J S .The Structure of a Self-Preserving Turbulent Plane et[J].Journal of Fluid Mechanics,1965,23(01):31-64. |
| [3] | Gutmark E;Wygnanski I .The Planar Turbulent et[J].Journal of Fluid Mechanics,1976,73(03):465-495. |
| [4] | Cervantes de Gortari J C;Goldschmidt V W .The apparent Flapping Motion of a Turbulent Plane Jet-Further Experimental Results[J].Journal of Fluids Engineering,Transactions of the ASME,1981,103:119-126. |
| [5] | Melville W K;Bray K N C .A Model of the Two-Phase Turbulent Jet[J].International Journal of Heat and Mass Transfer,1979,22:647-656. |
| [6] | Chung J N;Troutt T R .Simulation of Particle Dispersion in an Axisymmetric et[J].Journal of Fluid Mechanics,1988,186:199-222. |
| [7] | Thompson K W .Time Dependent Boundary Conditions for Hyperbolic Systems[J].Journal of Computational Physics,1987,68:1-24. |
| [8] | Berenger J P .A Perfectly Matched Layer for the Absorption of Electromagnetic Waves[J].Journal of Computational Physics,1994,114:185-200. |
| [9] | Fan JR.;Yao J.;Cen KF.;Zheng YQ. .Direct simulation of particle dispersion in a three-dimensional temporal mixing layer[J].Proceedings of the Royal Society. Mathematical, physical and engineering sciences,2001(2013):2151-2166. |
| [10] | Wen F;Kamalu N;Chung J N et al.Particle Dispersion by Vortex Structures in Plane Mixing Layers[J].Journal of Fluids Engineering,Transactions of the ASME,1992,114:657-666. |
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