Computations of Complex Turbulent Flows Using the Commercial Code Fluent

The present paper is primarily concerned with practical aspects of modeling complex turbulent flows. The issues of meshing and discretization, which are prerequisite to successful prediction of complex turbulent flows, are discussed. Near-wall treatments are briefly reviewed with the main focus on the wall function approach in view of its practicality in simulating complex industrial flows. Computational results obtained using a selected number of turbulence models, ranging from a simple one-equation model to a differential Reynolds-stress model, are presented and discussed to assess what the models can offer for complex turbulent flows involving strong pressure gradients, separation, crossflow, and shocks.

[1]  T. Shih,et al.  A New K-epsilon Eddy Viscosity Model for High Reynolds Number Turbulent Flows: Model Development and Validation , 1994 .

[2]  C. C. Horstman,et al.  On the use of wall functions as boundary conditions for two-dimensional separated compressible flows , 1985 .

[3]  S. Orszag,et al.  Development of turbulence models for shear flows by a double expansion technique , 1992 .

[4]  P. Spalart.  A One-Equation Turbulence Model for Aerodynamic Flows , 1992 .

[5]  R. S. A ma no,et al.  DEVELOPMENT OF A TURBULENCE NEAR-WALL MODEL AND ITS APPLICATION TO SEPARATED AND REATTACHED FLOWS , 1984 .

[6]  T. Gatski,et al.  On explicit algebraic stress models for complex turbulent flows , 1992, Journal of Fluid Mechanics.

[7]  Sanjay R. Mathur,et al.  A Reynolds-averaged Navier-Stokes solver using unstructured mesh-based finite-volume scheme , 1998 .

[8]  Richard W. Johnson.  NUMERICAL SIMULATION OF LOCAL NUSSELT NUMBER FOR TURBULENT FLOW IN A SQUARE DUCT WITH A 180° BEND , 1988 .

[9]  B. Launder,et al.  The numerical computation of turbulent flows , 1990 .

[10]  Wayne A. Smith,et al.  Preconditioning Applied to Variable and Constant Density Flows , 1995 .

[11]  D. A. Johnson,et al.  Transonic, turbulent boundary-layer separation generated on an axisymmetric flow model , 1986 .

[12]  B. Launder,et al.  On the calculation of turbulent heat transport downstream from an abrupt pipe expansion , 1980 .

[13]  Ryoichi S. Amano,et al.  Development of a turbulence near-wall model and its application to separated and reattached flows , 1984 .

[14]  A. Townsend,et al.  Equilibrium layers and wall turbulence , 1961, Journal of Fluid Mechanics.

[15]  B. Launder,et al.  Ground effects on pressure fluctuations in the atmospheric boundary layer , 1978, Journal of Fluid Mechanics.

[16]  V. C. Patel,et al.  Near-wall turbulence models for complex flows including separation , 1988 .

[17]  B. P. Leonard,et al.  A stable and accurate convective modelling procedure based on quadratic upstream interpolation , 1990 .

[18]  David C. Wilcox,et al.  Comparison of two-equation turbulence models for boundary layers with pressure gradient , 1993 .

[19]  J. Lumley,et al.  A new Reynolds stress algebraic equation model , 1994 .

[20]  H T Wang,et al.  Propeller/Stern/Boundary-Layer Interaction on Axisymmetric Bodies: Theory and Experiment. , 1976 .

[21]  Sadek Z. Kassab,et al.  Turbulent flow in a conical diffuser: Overview and implications , 1989 .

[22]  Alexander J. Smits,et al.  A turbulent flow over a curved hill Part 1. Growth of an internal boundary layer , 1987 .

[23]  T. Barth,et al.  A one-equation turbulence transport model for high Reynolds number wall-bounded flows , 1990 .

[24]  J. Murthy,et al.  A PRESSURE-BASED METHOD FOR UNSTRUCTURED MESHES , 1997 .

[25]  T. Shih,et al.  A new k-ϵ eddy viscosity model for high reynolds number turbulent flows , 1995 .