首页> 外文会议>4th European Symposium on Aerothermodynamics for Space Vehicles, Oct 15-18, 2001, Capua, Italy >THE ACCELERATED METHOD OF GLOBAL ITERATIONS FOR SOLVING THE EXTERNAL AND INTERNAL PROBLEMS OF AEROHYDRODYNAMICS
【24h】

THE ACCELERATED METHOD OF GLOBAL ITERATIONS FOR SOLVING THE EXTERNAL AND INTERNAL PROBLEMS OF AEROHYDRODYNAMICS

机译:解决空气动力学的外部和内部问题的全局方法的加速方法

获取原文
获取原文并翻译 | 示例

摘要

A low-iterative high-resolution fully coupled implicit space-marching procedure is developed to compute internal and external viscous flows on the basis of reduced Navier-Stokes (RNS) equations specified in primitive variables, including pressure, and in adaptive curvilinear system coordinates. The procedure can be applied to calculate compressible flows over a wide range of Mach number. To take into account an upstream influence, the accelerated method of global iterations is elaborated on the basis of a new splitting of the streamwise pressure gradient into hyperbolic and elliptic components. In contrast to the well known splitting of Vigneron et al [1], the hyperbolic component in the new splitting is a main part of the pressure gradient even for the low Mach number flows. The necessary number of the global iterations on the elliptic component of the pressure gradient are reduced to one or two due to both the new splitting and a novel formulation of the problem for the RNS equations at each of the global iterations.
机译:开发了一种低迭代率的高分辨率全耦合隐式空间行进程序,该程序可在原始变量(包括压力)和自适应曲线系统坐标中指定的简化的Navier-Stokes(RNS)方程的基础上,计算内部和外部粘性流。该程序可用于计算大马赫数范围内的可压缩流量。考虑到上游影响,在将河道压力梯度新分为双曲线和椭圆形分量的基础上,阐述了全局迭代的加速方法。与Vigneron等人[1]众所周知的分流相反,即使对于低马赫数流,新分流中的双曲分量也是压力梯度的主要部分。由于新的分裂以及每次全局迭代中RNS方程问题的新颖表达,在压力梯度的椭圆分量上的全局迭代的必要数量减少到一两个。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号