This paper presents some results of hybrid LES-RANS simulation of flow over a staggered matrix of cylindrical pins bounded by a cold and a heated plane endwall. The focus is on a comparative analysis and mutual correlation of vortical structures, velocity- and thermal fields. The thermal field is visualized by temperature contours and heat-flux lines. The latter make it possible to identify the heat "corridors" and distinguish regions with dominance of stochastic turbulent transport and of large-scale vortical convection.
Vorticity, velocity and thermal fields in flow over a wall bounded pin matrix: a hybrid LES/RANS study / Delibra, Giovanni; Borello, Domenico; Hanjalic, Kemal; Rispoli, Franco. - STAMPA. - (2009), pp. 463-466. (Intervento presentato al convegno 6th International Symposium on Turbulence, Heat and Mass Transfer 6 tenutosi a Rome; Italy nel September 14-18, 2009).
Vorticity, velocity and thermal fields in flow over a wall bounded pin matrix: a hybrid LES/RANS study
DELIBRA, GIOVANNI;BORELLO, Domenico;HANJALIC, KEMAL;RISPOLI, Franco
2009
Abstract
This paper presents some results of hybrid LES-RANS simulation of flow over a staggered matrix of cylindrical pins bounded by a cold and a heated plane endwall. The focus is on a comparative analysis and mutual correlation of vortical structures, velocity- and thermal fields. The thermal field is visualized by temperature contours and heat-flux lines. The latter make it possible to identify the heat "corridors" and distinguish regions with dominance of stochastic turbulent transport and of large-scale vortical convection.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
