高马赫数低雷诺数条件下圆球绕流曳力系数  

Drag coefficients of flows past a sphere at high Mach numbers and low Reynolds numbers

作　　者：李瑞元 陈飞国[1,3] 葛蔚 张永民[2] LI Ruiyuan;CHEN Feiguo;GE Wei;ZHANG Yongmin(State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing 102249,China;Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]中国石油大学(北京)重质油国家重点实验室,北京102249 [3]中国科学院绿色过程制造创新研究院,北京100190 [4]中国科学院大学化学工程学院,北京100049

出　　处：《空气动力学学报》2021年第3期201-208,I0004,共9页Acta Aerodynamica Sinica

基　　金：国家自然科学基金重大研究计划集成项目(92034302);国防基础科研科学挑战专题(TZ2016001);国家数值风洞工程(NNW2019ZT2-B03);国家科技重大专项(2017-I-0004-0005);中国科学院绿色过程制造创新研究院自主部署项目(IAGM-2019-A03)。

摘　　要：圆球绕流曳力系数通常表示为雷诺数的函数。而随着马赫数增大,曳力系数与马赫数的相关性逐渐增强。本文应用硬球-拟颗粒模型方法模拟研究1≤Re≤20和0.1≤Ma≤3条件下的圆球绕流过程。分析了模拟区域设置和拟颗粒-圆球作用的热适应系数对曳力系数结果的影响,得到合适的区域设置条件和热适应系数,获得高马赫数低雷诺数条件下圆球绕流曳力系数,并依此初步建立1≤Re≤20和0.1≤Ma≤3范围内马赫数对曳力系数的修正模型。It is well accepted that the drag coefficients of incompressible flows past a sphere only depend on the Reynolds number Re.However,the influence of the Mach number Ma on the drag coefficient becomes increasingly obvious for flows with higher Mach numbers.Unfortunately,this influence has not yet been well understood.In this work,a numerical method coupling the hard-sphere and the pseudo-particle models(HSPPM)is used to simulate flows past a sphere at 1≤Re≤20 and 0.1≤Ma≤3.The influences of the simulating domain and accommodation coefficients of the interactions between pseudo-particles and the solid sphere on drag coefficients are studied firstly.Then,approporiate simulation domains and reasonable accommodation coefficients are obtained to simulate flows past a sphere.Finally,based on the drag coefficients obtained from the HS-PPM simulations,a preliminary Mach-number correction model of drag coefficients is proposed.

关 键 词：圆球绕流 曳力系数 硬球-拟颗粒模型 雷诺数 马赫数 

分 类 号：O354[理学—流体力学]