Heat transport by fluid flows with prescribed velocity fields - art. no. 046302

Authors
Ching, ESC Lo, KF
Citation
Esc. Ching et Kf. Lo, Heat transport by fluid flows with prescribed velocity fields - art. no. 046302, PHYS REV E, 6404(4), 2001, pp. 6302
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
6404
Issue
4
Year of publication
2001
Part
2
Database
ISI
SICI code
1063-651X(200110)6404:4<6302:HTBFFW>2.0.ZU;2-G
Abstract
We study the problem of heat transport by fluid flows with prescribed veloc ity fields. The advection-diffusion equation in two dimensions is solved fo r two velocity fields: (i) a circulation and (ii) a shear flow. These two f lows focus separately on the two dominant features of the mean large-scale flow observed in turbulent convection experiments. We find that the Nusselt number, which measures the heat transport, scales respectively for the two velocity fields.