Resolution effects and scaling in numerical simulations of passive scalar mixing in turbulence

2010 ◽  
Vol 239 (14) ◽  
pp. 1278-1287 ◽  
Author(s):  
D.A. Donzis ◽  
P.K. Yeung
Keyword(s):  
Numerical Simulations ◽  
Passive Scalar ◽  
Scalar Mixing

High Rayleigh number convection and passive scalar mixing

1996 ◽  
Vol 97 (1-3) ◽  
pp. 286-290 ◽  
Author(s):  
Boris I. Shraiman ◽  
Eric D. Siggia
Keyword(s):  
Rayleigh Number ◽  
Passive Scalar ◽  
Scalar Mixing

Scalar mixing in direct numerical simulations of temporally evolving plane jet flames with skeletal CO/H2 kinetics

2007 ◽  
Vol 31 (1) ◽  
pp. 1633-1640 ◽  
Author(s):  
Evatt R. Hawkes ◽  
Ramanan Sankaran ◽  
James C. Sutherland ◽  
Jacqueline H. Chen
Keyword(s):  
Numerical Simulations ◽  
Direct Numerical Simulations ◽  
Scalar Mixing ◽  
Jet Flames ◽  
Plane Jet

scholarly journals Passive Scalar Mixing Downstream of a Synthetic Jet in Crossflow

2008 ◽  
pp. 103-109
Author(s):  
Glen Mitchell ◽  
Emmanuel Benard ◽  
Václav Uruba ◽  
Richard Cooper
Keyword(s):  
Passive Scalar ◽  
Synthetic Jet ◽  
Scalar Mixing ◽  
Jet In Crossflow

Numerical Simulations of Turbulent Flume Heat Transfer at Pr = 5.4: Impact of the Smallest Temperature Scales

2005 ◽  
Author(s):  
R. Bergant ◽  
I. Tiselj
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Numerical Simulations ◽  
Passive Scalar ◽  
Temperature Fields ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Temperature Scales ◽  
Highly Correlated

In the present paper a role of the smallest diffusive scales of a passive scalar field in the near-wall turbulent flow was examined with pseudo-spectral numerical simulations. Temperature fields were analyzed at friction Reynolds number Reτ = 170.8 and at Prandtl number, Pr = 5.4. Results of direct numerical simulation (DNS) were compared with the under-resolved simulation where the velocity field was still resolved with the DNS accuracy, while a coarser grid was used to describe the temperature field. Since the smallest temperature scales remained unresolved in this simulation, an appropriate spectral turbulent thermal diffusivity was applied to avoid pileup at higher wave numbers. In spite of coarser numerical grid, the temperature field is still highly correlated with the DNS results, and thus point to practically negligible role of the diffusive temperature scales on the macroscopic behavior of the turbulent heat transfer.

Investigation of passive scalar mixing in a confined rectangular wake using simultaneous PIV and PLIF

2010 ◽  
Vol 65 (11) ◽  
pp. 3372-3383 ◽  
Author(s):  
Hua Feng ◽  
Michael G. Olsen ◽  
James C. Hill ◽  
Rodney O. Fox
Keyword(s):  
Passive Scalar ◽  
Scalar Mixing
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