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On the comparison of the dynamics of particles within homogeneous isotropic turbulence and the Reynolds and Favre filtered flow velocities.

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A parametric study has been undertaken using direct numerical simulations (DNS) of forced compressible particle- laden flow in order to determine the validity of the comparison between experimental PIV/PTV flow fields and numerical LES Reynolds/Favre filtered flow fields. This requires solving the 3D Navier-Stokes equations and particle dynamics in a periodic domain where important parameters include the Reynolds number, Mach number, Particle diameter, filter width and ratio of solenoidal to dilatational dissipation. Results of the simulations and a tentative analysis are presented.

Author(s):

Paul Stegeman    
Monash University
Australia

Julio Soria    
Monash University
Australia

Andrew Ooi    
Melbourne University
Australia