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Examinations on closure models of conditionally filtered LES

Jian Zhang ; Xing Zhang ; Huadong Yao (Institutionen för tillämpad mekanik, Strömningslära)
Journal of Engineering Thermophysics (0253-231x). Vol. 32 (2011), 2, p. 357-359.
[Artikel, refereegranskad vetenskaplig]

The DNS and the conditionally filtered LES (CFLES) were combined to examine the validity of the linear-diffusion approximation and the first-order closure in CFLES equation. The linear-diffusion approximation was applied to closing transport term in mixture-fraction space in CFLES equation, and the first-order closure was used in closing conditionally filtered reaction source term. The first two order moments of filtered mass-fraction of the reactant were obtained by using CFLES and were closed to results of the DNS, which well examined the validity of the approximations mentioned above.

Nyckelord: conditionally filtered, LES, turbulence, chemical reacting flow



Denna post skapades 2014-09-18.
CPL Pubid: 202904

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur