TY - GEN
T1 - Influence of rheological parameters on turbulent heat transfer in drag-reducing viscoelastic channel flow
AU - Tsukahara, Takahiro
AU - Ishigami, Takahiro
AU - Kurano, Junya
AU - Kawaguchi, Yasuo
PY - 2010
Y1 - 2010
N2 - Direct numerical simulations (DNS) of a drag-reducing vis-coelastic turbulent channel flow with heat transfer had been carried out for three kinds of rheologically different fluids (e.g., different values of Weissenberg number). The molecular Prandtl number was set to be 0.1-2.0. A uniform heat-flux condition was employed as the thermal boundary condition. In this paper, we present various statistical turbulence quantities including the mean and fluctuating temperatures, the Nusselt number (Nu), and the cross-correlation coefficients and discuss about their dependence on the rheological parameters and the Prandtl-number dependency of the obtained drag-reduction rate and heat-transfer reduction rate.
AB - Direct numerical simulations (DNS) of a drag-reducing vis-coelastic turbulent channel flow with heat transfer had been carried out for three kinds of rheologically different fluids (e.g., different values of Weissenberg number). The molecular Prandtl number was set to be 0.1-2.0. A uniform heat-flux condition was employed as the thermal boundary condition. In this paper, we present various statistical turbulence quantities including the mean and fluctuating temperatures, the Nusselt number (Nu), and the cross-correlation coefficients and discuss about their dependence on the rheological parameters and the Prandtl-number dependency of the obtained drag-reduction rate and heat-transfer reduction rate.
UR - http://www.scopus.com/inward/record.url?scp=84860521658&partnerID=8YFLogxK
U2 - 10.1115/IHTC14-23138
DO - 10.1115/IHTC14-23138
M3 - Conference contribution
AN - SCOPUS:84860521658
SN - 9780791849378
T3 - 2010 14th International Heat Transfer Conference, IHTC 14
SP - 777
EP - 786
BT - 2010 14th International Heat Transfer Conference, IHTC 14
T2 - 2010 14th International Heat Transfer Conference, IHTC 14
Y2 - 8 August 2010 through 13 August 2010
ER -