Large-eddy simulation for urban micro-meteorology

Abstract Validation of large-eddy simulation (LES) computations of flows over an array of cubes with imposed periodic inflow-outflow condition is described. Then, a method of generation of appropriate inflow data for such flows is proposed and the results are compared with those using periodic boundary conditions in the streamwise direction and wind tunnel measurements [3]. Finally, some results obtained using the inflow method for an oscillatory through- flow combined with a steady current are discussed.

[1]  Chris G. Collier,et al.  The impact of urban areas on weather , 2006 .

[2]  A. Sadiki,et al.  A digital filter based generation of inflow data for spatially developing direct numerical or large eddy simulations , 2003 .

[3]  Zheng-Tong Xie,et al.  LES and RANS for Turbulent Flow over Arrays of Wall-Mounted Obstacles , 2006 .

[4]  Measurement of Lagrangian velocity in fully developed turbulence. , 2001, Physical review letters.

[5]  R. Britter,et al.  FLOW AND DISPERSION IN URBAN AREAS , 2003 .

[6]  Kemal Hanjalic,et al.  Vortex structure and heat transfer in turbulent flow over a wall-mounted matrix of cubes , 1999 .

[7]  Jochen Fröhlich,et al.  LES OF FLOW OVER MULTIPLE CUBES , 2003 .

[8]  Large eddy simulation of a thermally stratified turbulent channel flow with temperature oscillation on the wall , 2004 .

[9]  T. Lund,et al.  Generation of Turbulent Inflow Data for Spatially-Developing Boundary Layer Simulations , 1998 .

[10]  Masayuki Kashiwayanagi,et al.  Experiments on the turbulence statistics and the structure of a reciprocating oscillatory flow , 1983, Journal of Fluid Mechanics.

[11]  Ian P. Castro,et al.  Turbulence Over Urban-type Roughness: Deductions from Wind-tunnel Measurements , 2006 .

[12]  J. F. A. Sleath,et al.  Turbulent oscillatory flow over rough beds , 1987, Journal of Fluid Mechanics.

[13]  Manabu Kanda,et al.  Large-Eddy Simulation of Turbulent Organized Structures within and above Explicitly Resolved Cube Arrays , 2004 .

[14]  B. Sumer,et al.  Turbulent oscillatory boundary layers at high Reynolds numbers , 1989, Journal of Fluid Mechanics.

[15]  Rainald Löhner,et al.  Comparisons of model simulations with observations of mean flow and turbulence within simple obstacle arrays , 2002 .

[16]  Modeling unsteady turbulent flows over ripples : RANS versus LES , 2003 .

[17]  Jørgen Fredsøe,et al.  Turbulent combined oscillatory flow and current in a pipe , 1998, Journal of Fluid Mechanics.

[18]  I. P. Castro,et al.  Vortex shedding in oscillatory flow: geometrical effects , 1992 .