Phys. Rev. E 64, 046302 (2001) [5 pages]Heat transport by fluid flows with prescribed velocity fieldsReceived 21 December 2000; revised 15 May 2001; published 21 September 2001 We study the problem of heat transport by fluid flows with prescribed velocity fields. The advection-diffusion equation in two dimensions is solved for two velocity fields: (i) a circulation and (ii) a shear flow. These two flows 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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.64.046302
DOI:
10.1103/PhysRevE.64.046302
PACS:
47.27.-i, 44.20.+b
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