您的位置: 专家智库 > >

国家自然科学基金(s110632050)

作品数:2 被引量:31H指数:2
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
相关领域:理学动力工程及工程热物理更多>>

文献类型

  • 2篇中文期刊文章

领域

  • 2篇理学
  • 1篇动力工程及工...

主题

  • 1篇PRESER...
  • 1篇SCHEME
  • 1篇TURBUL...
  • 1篇TURBUL...
  • 1篇DIRECT...
  • 1篇INTERA...
  • 1篇RAMP
  • 1篇SUPERS...
  • 1篇UPWIND
  • 1篇MONOTO...

传媒

  • 2篇Scienc...

年份

  • 1篇2011
  • 1篇2010
2 条 记 录,以下是 1-2
排序方式:
Direct numerical simulation of shock/turbulent boundary layer interaction in a supersonic compression ramp被引量:25
2010年
A direct numerical simulation of the shock/turbulent boundary layer interaction flow in a supersonic 24-degree compression ramp is conducted with the free stream Mach number 2.9.The blow-and-suction disturbance in the upstream wall boundary is used to trigger the transition.Both the mean wall pressure and the velocity profiles agree with those of the experimental data,which validates the simulation.The turbulent kinetic energy budget in the separation region is analyzed.Results show that the turbulent production term increases fast in the separation region,while the turbulent dissipation term reaches its peak in the near-wall region.The turbulent transport term contributes to the balance of the turbulent conduction and turbulent dissipation.Based on the analysis of instantaneous pressure in the downstream region of the mean shock and that in the separation bubble,the authors suggest that the low frequency oscillation of the shock is not caused by the upstream turbulent disturbance,but rather the instability of separation bubble.
LI XinLiang1,FU DeXun2,MA YanWen2 & LIANG Xian1 1 Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China
关键词:RAMPINTERACTION
A 5th order monotonicity-preserving upwind compact difference scheme被引量:6
2011年
Based on an upwind compact difference scheme and the idea of monotonicity-preserving, a 5th order monotonicity-preserving upwind compact difference scheme (m-UCD5) is proposed. The new difference scheme not only retains the advantage of good resolution of high wave number but also avoids the Gibbs phenomenon of the original upwind compact difference scheme. Compared with the classical 5th order WENO difference scheme, the new difference scheme is simpler and small in diffusion and computation load. By employing the component-wise and characteristic-wise methods, two forms of the new difference scheme are proposed to solve the N-S/Euler equation. Through the Sod problem, the Shu-Osher problem and tbe two-dimensional Double Mach Reflection problem, numerical solutions have demonstrated this new scheme does have a good resolution of high wave number and a robust ability of capturing shock waves, leading to a conclusion that the new difference scheme may be used to simulate complex flows containing shock waves.
HE ZhiWeiLI XinLiangFU DeXunMA YanWen
共1页<1>
聚类工具0