极高Ra数湍流热对流多分辨率并行直接求解方法

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户:Cgsking
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  高 Ra 数Rayleigh–Bénard 热对流的湍流特性研究是当前国际上的一个热门研究课题,DNS模拟计算是研究该课题的重要手段之一。高Ra 的RB 热对流数值模拟面临重大挑战。随着Ra数的提高,计算规模不断增大而计算工作量巨大,计算难以实现,从而造成数值模拟高Ra 数RB 对流的研究瓶颈。
其他文献
  Bo-modulus materials such as graphite,foamed aluminum and some polymers present tension-compression asymmetric mechanical behaviors.To improve the numerical
  The Arbitrary Lagrangian-Eulerian(ALE)Formulation has been the research hotspot since the work of Hirt etc.,which emerged to alleviate the drawbacks of trad
  Incompressible materials are hard to solve using the conventional finite element method.In the history of computational mechanics,numerous techniques were c
  裂纹尖端没有独立的自由度是富集有限元法,比如广义有限元、扩展有限元和增强有限元等,模拟强非连续变形问题时,产生响应曲线的锯齿状阶跃和尾段上翘现象的重要原因。
  针对现有梁板壳数值分析方法存在的一些基础性问题,如有限元法构造C1 连续函数的困难、闭锁现象、曲壳单元不易构造、几何保形性等,基于独立覆盖流形法,提出梁板壳数值分析
  The wide-flange box girder is widely used in the elevated bridges of highway and highspeed railway because of its large cross-section stiffness,easy constru
  An extension of two published element models,the unsymmetric 4-node,8-DOF quadrilateral element US-ATFQ4 and the unsymmetric 8-node,24-DOF hexahedral elemen
  In this paper,NURBS-based isogeometric analysis(IGA)and isogeometric analysis using polynomial splines over hierarchical T-meshes(PHT-splines)are introduced
  An extended isogeometric analysis(XIGA)method based on PHT-splines for simulating thin plate and shell structures of through-the-thickness crack with Kirchh
  将径向基函数逼近的思想与加权余量配点相结合的方法用于强非线性梁的求解。为减小数值震荡,针对不同问题的边值条件,提出了对应的径向基函数插值表达式,且采用适当的紧支撑