修正的SPH方法模拟强制旋转动边界问题研究  

INVESTIGATION ON THE FORCED REVOLVING MOVING BOUNDARY PROBLEM USING CORRECTED SMOOTHED PARTICLE HYDRODYNAMICS METHOD

作　　者：董添文[1,2] 黄兴元[1] 江顺亮[3] 柳和生[2] 

机构地区：[1]南昌大学机电工程学院,南昌330031 [2]上饶师范学院物理与电子信息学院,江西上饶334001 [3]南昌大学信息工程学院,南昌330031

出　　处：《工程力学》2013年第6期295-300,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(50863003)

摘　　要：采用移动最小二乘(moving least squares,MLS)修正的光滑粒子流体动力学(smoothed particlehydrodynamics,SPH)算法模拟了一个强制旋转动边界问题模型。提出了一种施加强制旋转粒子动边界方案。阐述了修正方法的原理并给出了具体的修正操作方法。同时,还构建了静边界模型,并分别使用修正的SPH以及商业软件FLUENT计算。对计算结果的比较分析表明:该修正SPH方法,能够消除压力振荡;该方法及动边界处理方案可以有效计算该强制动边界问题,为进一步计算更加复杂模型奠定了理论基础。同时,该方法对于不同领域中的动边界问题也具有一定参考价值。Based on the moving least squares corrected smoothed particle hydrodynamics （SPH） method, a moving boundary problem model has been simulated. A forced revolving moving boundary particle treatment is presented. The principal of the corrected SPH and its correction-step are introduced. A fixed boundary model is also constructed and separately simulated by the corrected SPH method and the commercial software FLUENT. Comparing the results, it has been shown that the correction approach can smooth the pressure oscillation, and this forced revolving moving boundary treatment is practical and effective. The method can be employed to simulate a more complex model. It has some referential value for the research on moving boundary problems in various areas.

关 键 词：光滑粒子流体动力学 移动最小二乘 不可压缩流 动边界 压力振荡 

分 类 号：O242[理学—计算数学]