Alignment of the strain-rate, SGS stress, and SGS force relative to parameters of the filtered velocity gradients


Bo Tao, Joseph Katz and Charles Meneveau
Department of Mechanical Engineering
The Johns Hopkins University, Baltimore, MD 21218


ABSTRACT: Three dimensional velocity distributions of a turbulent flow in a square duct at Rl~ 260 are measured using holographic PIV. Employing spatial filtering of the measured velocity fields enables calculation of the SGS stresses and filtered velocity gradients. This paper examines the eigenvalue structures and eigenvector alignments of SGS stresses and tensorial parameters based on the filtered velocity gradients. (cont'd)...

in: Proceedings of ASME FEDSM’01
ASME 2000 Fluids Engineering Division Summer Meeting
paper: FEDSM00-18272 (2001)

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(©ASME, see http://www.aps.org).

 

Charles Meneveau, Department of Mechanical Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore MD 21218, USA, Phone: 1-410-516-7802, Fax: 1-(410) 516-7254, email: meneveau@jhu.edu

  
Last update: 08/30/2008