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Modeling gas-granular flow in molecular using the DSMC method and continuum regions by Onsager's pancake equation with mass sources and sinks in a rotating cylinder

机译：使用DSMC方法和连续区域通过Onsager的Pancake方程对分子中的气体颗粒流进行建模，该方程具有质量源和在旋转圆柱体中的汇

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摘要

Increasing the speed of rotation in a gas rotating cylinder leads the gas to be transferred to a small section of the rotating cylinder. The Navier-Stokes equations are conventionally used to analyze gas flow in this area. By moving away from the wall and approaching the cylinder axis, the gas is diluted, and the Knudsen number increases, and as a result, it decreases the precision of Navier-Stokes equations for gas flow analysis. Solving the Boltzmann equation in the molecular region is an accurate method. One of the methods for solving the Boltzmann equation is using the DSMC method. This paper aims to model the whole gas rotating cylinder (molecular and continuum regions). Initially, the molecular region was completely modeled using the DSMC method and its results (the exact function of the mass sources or (M0)) were used to solve the continuum region equations. For the continuum region, the Onsager's pancake equation with a mass source/sink along with finite difference method is used. The results indicated that with the correction of the mass sources function proposed by earlier researchers, a more precise solution is obtained for analyzing gas flow inside a rotating cylinder.
机译：气体旋转气缸中旋转速度的提高导致气体被转移到旋转气缸的一小部分。 Navier-Stokes方程式通常用于分析该区域的气流。通过远离壁面移动并接近气缸轴线，气体被稀释，克努森数增加，结果，降低了用于气流分析的Navier-Stokes方程的精度。在分子区域求解玻尔兹曼方程是一种准确的方法。解决Boltzmann方程的方法之一是使用DSMC方法。本文旨在模拟整个气体旋转圆柱体（分子和连续区域）。最初，使用DSMC方法对分子区域进行了完全建模，并将其结果（质量源或（M0）的确切函数）用于求解连续区域方程。对于连续区域，使用带有质量源/汇的Onsager煎饼方程以及有限差分法。结果表明，随着早期研究人员提出的对质量源函数的修正，可以得到更精确的解决方案来分析旋转气缸内的气体流动。

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  • 来源
    《Granular matter》 |2019年第3期|63.1-63.15|共15页
  • 作者

    Khajenoori Masoud; Safdari Jaber; Asl Ali Haghighi; Norouzi Ali;

  • 作者单位

    Semnan Univ, Fac Chem Gas & Petr Engn, Semnan, Iran;

    Nucl Sci & Technol Res Inst, Nucl Fuel Cycle Res Sch, Tehran, Iran;

    Semnan Univ, Fac Chem Gas & Petr Engn, Semnan, Iran;

    Nucl Sci & Technol Res Inst, Nucl Fuel Cycle Res Sch, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    DSMC; Feed flow; Mass sources; Rotating cylinder;

    机译：DSMC;饲料流动;质量源;旋转圆筒;

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