高焓可压缩流动热辐射颗粒两相流理论分析  

Theoretical Analysis on the High Enthalpy Radiation Particle Laden Compressible Flow

作　　者：李婷婷 刘朋欣 袁先旭[2] 周强 李青 LI Tingting;LIU Pengxin;YUAN Xianxu;ZHOU Qiang;LI Qing(School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an 710049;State Key Laboratoryof Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000)

机构地区：[1]西安交通大学化学工程与技术学院,西安710049 [2]空气动力学国家重点实验室,中国空气动力研究与发展中心,绵阳621000

出　　处：《北京大学学报（自然科学版）》2022年第6期989-998,共10页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家重点研发计划(2019YFA0405200)资助。

摘　　要：从理论上推导了弥散热辐射颗粒与可压缩流动的耦合方程,发现弥散颗粒与携带流体的相间传热系数与马赫数平方成正比。极端高温下,弥散颗粒相与携带流体相的对流传热是单向的,即等温颗粒不断通过对流作用传热给流体,但对流作用无法冷却高温热辐射颗粒。通过考察均匀流中缩核效应对惯性颗粒动力学的影响,发现质量损失会诱导颗粒惯性参数发生变化,从而改变颗粒的非定常速度曲线。The theoretical equations of particle laden compressible flow by taking into account of heat radiation and convection were derived.It is found that,the heat exchange between dispersed phase and carried fluid phase is proportional to square of Mach number.In extreme high temperature environment,the convective heat transfer between two phases is one way,which means that the isothermal particle transfers the heat into the fluid,but the fluid can not cool down the radiation-heated particle via convection.In addition,the effect of shrinking core on the particle dynamics was investigated.The shrinking core effect modifies the Stokes number of particle,therefore the time evolution of unsteady velocity of particle from rest to terminal state in a uniform flow was altered.

关 键 词：热辐射颗粒 辐射热响应系数 对流热响应系数 颗粒缩核效应 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程] V430