Large Eddy Simulation of Flow Past a Square Cylinder: Comparison of Different Subgrid Scale Models

[+] Author and Article Information
Ahmad Sohankar, L. Davidson

Thermo and Fluid Dynamics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden

C. Norberg

Heat and Power Engineering, Lund Institute of Technology, Box 118, SE-221 00 Lund, Sweden

J. Fluids Eng 122(1), 39-47 (Nov 15, 1999) (9 pages) doi:10.1115/1.483224 History: Received March 15, 1999; Revised November 15, 1999
Copyright © 2000 by ASME
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Grahic Jump Location
Time- and spanwise-averaged pressure coefficient CP around the cylinder (left) and versus x at centerline y=0 (right). Experiments: Bearman & Obasaju 23, Re=22×103; Norberg 21, Re=13×103; Nakamura and Ohya 38, Re=67×103. All distributions around the cylinder (left) have been corrected for blockage using the Maskell scheme (Sec. 4)
Grahic Jump Location
Time- and spanwise-averaged velocity 〈ū〉tz, and RMS velocities (〈uutz,〈vvtz,〈wwtz) at centerline (y=0)
Grahic Jump Location
Time- and spanwise-averaged velocity 〈ū〉tz and ratio of turbulent viscosity νrt/ν versus y at x=2.5 and x=6.5 (see Fig. 2 for legend)
Grahic Jump Location
Time- and spanwise-averaged turbulent stresses (〈uutz,〈vvtz,〈wwtz,〈uvtz) versus y at x=2.5 (top) and x=6.5 (bottom) (see Fig. 2 for legend)
Grahic Jump Location
Time variation of Ck at two chosen cells on the centerline y=0 (left) and Chomk (right) for case OEDSMA
Grahic Jump Location
Time-averaged SGS production (〈Pksgst) and velocity gradient (〈∂ū/∂x〉t) at midspan (z=0) for case OEDSMA. Along centerline y=0 (left); at different streamwise locations versus y (right).



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