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Numerical Simulation of Separated Flows in Channels

Numerical Simulation of Separated Flows in Channels
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摘要 The work deals with numerical modelling of turbulent flows in channels with an expansion of the cross-section where flow separation and reattachment occur. The performance of several eddy viscosity models and an explicit algebraic Reynolds stress model (EARSM) is studied. The used test cases are flows in channels with various backward facing steps where the step is perpendicular or inclined and the top wall is parallel or deflected. Furthermore, a channel with the circular ramp is considered. The numerical solution is achieved by the finite volume method or by the finite element method. The results of both numerical approaches are compared.
作者 Petr Louda Jaromír Príhoda Petr Sváek Karel Kozel
机构地区 Czech Technical University in Prague Institute of Thermomechanics AS CR v.v.i.
出处 《Journal of Thermal Science》 SCIE EI CAS CSCD 2012年第2期145-153,共9页 热科学学报（英文版）
基金 supported by Grant Number 103/09/0977 of Czech Science Foundation Research Plans of MSMT No. 6840770010 and No. AV0Z207 60514
关键词 backward facing step flow EARSM model SST model 数值模拟 通道 分离流 雷诺应力模型 涡粘性模型 有限元方法 有限体积法 扩大截面
分类号 O357.5 [理学—流体力学]
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参考文献17

  • 1Armaly B. F., Durst F., Pereira J. C. F., and Sch?nung B.: Experimental and theoretical investigation of back- ward-facing step flow. J. Fluid Mech., 127:473–496, 1983.
  • 2Chorin A. J.: A numerical method for solving incom- pressible viscous flow problems. J. of Computational Physics, 2(1): 12–26, 1967.
  • 3Driver D. M., Seegmiller H. L.: Features of a reattaching turbulent shear layer in divergent channel flow. AIAA J., 23: 163–171, 1985.
  • 4Hellsten A.: New advanced k-? turbulence model for high-lift aerodynamics. AIAA J., 43: 1857–1869, 2005.
  • 5Kok J. C.: Resolving the dependence on free stream val- ues for the k?? turbulence model. AIAA J., 38: 1292?1295, 2000.
  • 6Kozel K., Louda P., P?íhoda J.: Numerical solution of turbulent backward facing step and impinging jet flows. In Conference on Modelling Fluid Flow CMFF’03 (eds. Lajos T., Vad J.), Budapest, 694–701, 2003, ISBN 963 420 778 2.
  • 7Kozel K., Louda P., P?íhoda J.: Numerical solution oftransonic turbulent flow through a turbine cascade. In Topical Problems of Fluid Mechanics 2004 (eds. P?íhoda J., Kozel K.), Praha, 73?76, 2004, ISBN 80-85918-86-2.
  • 8Kozel K., Louda P., P?íhoda J.: Numerical modelling of turbulent flow over three- dimensional backward facing step. In Conference on Modelling Fluid Flow CMFF’06 (eds. Lajos T., Vad J.), Budapest, 448–455, 2006, ISBN 963 420 872 X.
  • 9Louda P., Kozel K., P?íhoda J.: Numerical solution of 2D and 3D viscous incompressible steady and unsteady flows using artificial compressibility method. Int. J. for Numerical Methods in Fluids, 56: 1399–1407, 2008.
  • 10Makiola B.: Experimentelle Untersuchungen zur Str?mung über die schr?ge Stufe. PhD thesis, University Karlsruhe, 1992. (see also ERCOFTAC Classic collection database, case C.53).
Journal of Thermal Science
2012年 第2期

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