Development of a parallel code to simulate skewed flow over a bluff body

This paper outlines a new complex geometry large-eddy simulation code using finite differences and a multigrid Poisson solver written for a parallel computer. The flow domain may be constructed from an arbitrary arrangement of rectangular blocks thus permitting flow in regions with complicated shapes, and may be mapped to any number of processors up to the number of blocks. The code is used to simulate turbulent flow at a Reynolds number of 3000 past a cube placed at ground level in rough terrain with its sides set 45° to mean flow direction. Preliminary results are presented which reproduce the conical vortices on the top of the cube.

[1]  D. M. Sykes.  A new wind tunnel for industrial aerodynamics , 1977 .

[2]  P. Moin,et al.  A dynamic localization model for large-eddy simulation of turbulent flows , 1995, Journal of Fluid Mechanics.

[3]  S. O. Hansen,et al.  A new boundary-layer wind tunnel at the danish maritime institute , 1985 .

[4]  H. J. Gerhardt,et al.  Wind effect on roofs and roofing systems , 1990 .

[5]  A. Robins,et al.  The flow around a surface-mounted cube in uniform and turbulent streams , 1977, Journal of Fluid Mechanics.

[6]  U. Schumann.  Subgrid Scale Model for Finite Difference Simulations of Turbulent Flows in Plane Channels and Annuli , 1975 .

[7]  S. Goldstein.  Modern developments in fluid dynamics , 1938 .

[8]  J. Smagorinsky,et al.  GENERAL CIRCULATION EXPERIMENTS WITH THE PRIMITIVE EQUATIONS , 1963 .

[9]  H. J. Gerhardt,et al.  Wind pressures on roofs of very low and very large industrial buildings , 1991 .

[10]  D. Laurence,et al.  Current state of computational bluff body aerodynamics , 1993 .

[11]  Theodore Stathopoulos,et al.  Numerical simulation of wind-induced pressures on buildings of various geometries , 1993 .

[12]  P. Mason.  Large‐eddy simulation: A critical review of the technique , 1994 .

[13]  Chris Letchford,et al.  Peak wind loads under delta wing vortices on canopy roofs , 1992 .

[14]  Jack E. Cermak,et al.  Full- and model-scale cladding pressures on the Texas Tech University experimental building , 1992 .

[15]  H. W. Tieleman,et al.  Pressures on surface-mounted prisms: The effects of incident turbulence , 1993 .

[16]  Chris Letchford,et al.  Characteristics of large pressures in regions of flow separation , 1993 .

[17]  S. Murakami,et al.  Three-dimensional numerical simulation of air flow around a cubic model by means of large eddy simulation , 1987 .

[18]  H. Werner,et al.  Large-Eddy Simulation of Turbulent Flow Over and Around a Cube in a Plate Channel , 1993 .

[19]  A. M. Goliger,et al.  Jan Smuts experiment: Comparison of full-scale and wind-tunnel results , 1992 .

[20]  N. J. Cook,et al.  A boundary layer wind tunnel for building aerodynamics , 1975 .

[21]  Hisashi Okada,et al.  Comparison of wind tunnel and full-scale pressure measurement tests on the Texas Texh Building , 1992 .

[22]  P. Moin,et al.  Numerical Simulation of Turbulent Flows , 1984 .

[23]  T. G. Thomas,et al.  Large Eddy Simulation of a symmetric trapezoidal channel at a Reynolds number of 430,000 , 1995 .

[24]  Shuzo Murakami.  Computational wind engineering , 1990 .