激波诱导惰性堆积粉尘运动的建模及数值模拟
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国家自然科学基金资助项目(19772018)


Modeling and Numerical Study on the Shock-induced Fluidization of Inert Powder Layers by the Granular Flow Models
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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。

    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.

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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.
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.

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  • 收稿日期:2001-01-12
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  • 在线发布日期: 2013-08-21
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