Simulation of a Binary Gas Flow inside a Rotating Cylinder, using v-DSMC Method and Comparison with Analytical Results
Publish place: 27th Annual Conference of Mechanical Engineering
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME27_744
تاریخ نمایه سازی: 8 مرداد 1398
Abstract:
This paper reports a comparative study of the convergence rate of an axially symmetric binary gas flow inside a rotating cylinder using a new Direct Simulation Monte Carlo algorithm (v-DSMC) and the conventional DSMC. Subsequently, a comparison between the convergence behavior of the v-DSMC and analytical data is carried out to scrutinize the validity of new algorithm. This method makes use of a modified collision model of Variable Hard Sphere (VHS) termed Maxwell-VHS, which considers an equally contingency of collision but an arbitrary viscosity variation with temperature, for all adjacent gas particles. The results of the numerical simulationdeclare the convergence rate of the v-DSMC is noticeably faster than those of performed by the conventional DSMC; however, a slight computational error occurs at the same simulation time that is due to higher accuracy of collision sampling in the conventional DSMC. Moreover, the results show a good agreement between the convergence behavior of the v-DSMC in comparison with analytical data
Keywords:
Boltzmann Equation-Rarefied Fluid- Collision Frequency-Direct Simulation Monte Carlo Method-Rotating Cylinder.
Authors
Siavash Maniee
Mechanical Engineering Faculty, Amirkabir University of Technology, Tehran, Iran
S.S Nourazar
Mechanical Engineering Faculty, Amirkabir University of Technology, Tehran, Iran