首页 | 本学科首页   官方微博 | 高级检索  
     


Direct Numerical Simulation of Transitional Turbulent Flow in a Closed Rotor-Stator Cavity
Authors:E. Serre  P. Bontoux  B.E. Launder
Affiliation:1. Laboratoire de Modélisation et Simulation Numérique en Mécanique L3M, IMT – La Jetée, Technop?le de Chateau-Gombert, 38 rue Frédéric Joliot-Curie, F-13451, Marseille Cedex 20, France
2. Department of Mechanical, Aerospace & Manufacturing Engineering, Manchester, M60 1QD, U.K
Abstract:
The transitional turbulent regime in confined flow between a rotating and a stationary disc is studied using direct numerical simulation. Besides its fundamental importance as a three-dimensional prototype flow, such flows frequently arise in many industrial devices, especially in turbomachinary applications. The present contribution extends the DNS simulation into the turbulent flow regime, to a rotational Reynolds number Re =3 × 105. An annular rotor-stator cavity of radial extension ΔR and height H, is considered with L = 4.72(L = ΔR/H) and Rm = 2.33 (Rm = (R 1+ R 0)/ΔR). The direct numerical simulation is performed by integrating the time-dependent Navier–Stokes equations until a statistically steady state is reached. A three-dimensional spectral method is used with the aim of providing both very accurate instantaneous fields and reliable statistical data. The instantaneous quantities are analysed in order to enhance our knowledge of the physics of turbulent rotating flows. Also, the results have been averaged so as to provide target turbulence data for any subsequent modelling attempts at reproducing the flow. This revised version was published online in July 2006 with corrections to the Cover Date.
Keywords:direct numerical simulation  rotor-stator flow  spectral method  turbulence  turbulent shear flow
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号