| 引用本文: | 李洁,陈伟芳,任兵,等.激波诱导惰性堆积粉尘运动的建模及数值模拟.[J].国防科技大学学报,2001,23(4):1-5.[点击复制] |
| LI Jie,CHEN Weifang,REN Bin,et al.Modeling and Numerical Study on the Shock-induced Fluidization of Inert Powder Layers by the Granular Flow Models[J].Journal of National University of Defense Technology,2001,23(4):1-5[点击复制] |
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| 激波诱导惰性堆积粉尘运动的建模及数值模拟 |
| 李洁1, 陈伟芳1, 任兵1, 范宝春2 |
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(1.国防科技大学 航天与材料工程学院, 湖南 长沙 410073;2.南京理工大学动力学院，江苏 南京 210094)
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| 摘要: |
| 基于空间平均的双流体模型，引入描述颗粒脉动速度的粒化温度，建立颗粒相的本构方程，将粒化温度模型推广到解决高速流动问题。采用AUSM+有限差分法，数值模拟激波在一定厚度的惰性粉尘床中传播及诱导粉尘颗粒运动的过程。结果表明，粒化温度模型较好地描述了这一过程，证实了此模型在处理稠密颗粒高速流动和流场存在强间断中的可行性。 |
| 关键词: 两相流 粒化温度模型 激波 AUSM+方法 |
| DOI： |
| 投稿日期：2001-01-12 |
| 基金项目:国家自然科学基金资助项目（19772018） |
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| Modeling and Numerical Study on the Shock-induced Fluidization of Inert Powder Layers by the Granular Flow Models |
| LI Jie1, CHEN Weifang1, REN Bin1, FAN Baochun2 |
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(1.College of Aerospace and Materials Engineering , National Univ. of Defense Technology, Changsha 410073,China;2.College of Dynamic Engineering , Nanjing Univ. of Science and Technology, Nanjing 210094,China)
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| Abstract: |
| The granular flow models on the basis of the kinetic theory are presented for numerical study on a dense particles bed with shock interaction. For the solid phase, the constitude equations are deduced from the interactions between the mean and the fluctuating motions of solid particles,the latter are represented as functions of the granular flow temperature. Numerical simulation by the AUSM+ schemes is employed to analyse the flowfield of the shock-induced fluidization of inert powder layers. It shows that the granular flow models are feasible to describle the flow with high speed and strong discontinunity. |
| Keywords: two-phase flow granular flow models shock waves AUSM+ schemes |
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