• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>National Fluid Mechanics and Fluid Power Conference >LES OF FLOW SEPARATION OVER A FLAT PLATE WITH SEMICIRCULAR LEADING EDGE USING IMMERSED BOUNDARY METHOD
【24h】

LES OF FLOW SEPARATION OVER A FLAT PLATE WITH SEMICIRCULAR LEADING EDGE USING IMMERSED BOUNDARY METHOD

机译：使用浸没边界法在具有半圆形前缘的平板上的流动分离。使用浸没边界法

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The transition arising from a separated flow region, such as from the leading edge of an airfoil or in turbomachinery blades, is quite common and plays an important role in engineering applications. The principle objective of the present LES is to study the physics of separated boundary-layer transition on a flat plate with semi circular leading edge. The unsteady, 3D-Navier-Stokes equations have been solved on a Cartesian staggered mesh arrangement using a symmetry-preserving central difference scheme. The immersed boundary (IB) method is used to impose boundary conditions on a given surface not coinciding with the computational grid. The significant growth of three-dimensional motions starts at about the middle of the separation bubble. Vortex shedding from the separated shear layer is also observed and the instantaneous reattachment of the separation bubble moves over a distance up to 24% of the bubble length. Maximum TKE and PKE are observed just before the reattachment at x/l=0.88 (where/is the separation bubble length).
机译：从分离的流动区域产生的过渡，例如来自翼型的前缘或涡轮机械叶片的前缘，非常常见并且在工程应用中起重要作用。本发明的原理目的是研究具有半圆形前缘的平板上分离边界层过渡的物理学。不稳定的3D-Navier-Stokes方程已经解决了使用对称保留的中心差分方案的笛卡尔交错的网格布置。浸没的边界（IB）方法用于施加与计算网格不一致的给定表面上的边界条件。三维运动的显着增长在分离泡的中间开始。也观察到来自分离的剪切层的涡流脱落，分离气泡的瞬时重新蚀地移动到高达24％的气泡长度的距离。在X / L = 0.88处重新附着之前观察到最大TKE和PKE（其中/是分离气泡长度）。

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