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如何模拟液体燃料的雾化、掺混及燃烧过程,一直以来都备受关注。本文试图将无网格MPS(moving paxticle semi—implicit method)方法与颗粒轨道模型结合起来描述液体燃料从射流、破碎、雾化、输运全过程,并与基于Euler网格气相方程耦合求解,从而可以获得对雾化燃烧全过程模拟的一体化方法。初步结果显示,其方法和技术路线可行。

How to simulate the whole process of sprays is always a difficut problem in multiphase atomization, mixing and combustion of liquid fuel fluid dynamics for many years. In this paper, an integrated method is proposed to calculate the whole process of spray combustion, in which the meshless MPS (moving particle semi-implicit method) combined with particle trajectory tracking method are used to track the liquid interface movement of fuel injection, break-up, atomization, and transport, while the compressible Navier-Stokes solver based on Euler mesh is used to simulate the gas flow with special techniques to deal with two-phase coupling as well as the coupling between mesh and meshless solver. Preliminary results indicate a feasible technical approach.

参考文献

[1] Koshizuka S.;Oka Y. .MOVING-PARTICLE SEMI-IMPLICIT METHOD FOR FRAGMENTATION OF INCOMPRESSIBLE FLUID[J].Nuclear science and engineering: the journal of the American Nuclear Society,1996(3):421-434.
[2] Ataie-Ashtiani B;Farhadi L .A stable moving-particle semi-implicit method for free surface flows[J].Fluid Dynamics Research,2006(4):241-256.
[3] Zhang S;Morita K;Fukuda K;Shirakawa N .An improved MPS method for numerical simulations of convective heat transfer problems[J].International Journal for Numerical Methods in Fluids,2006(1):31-47.
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