2024
DOI: 10.1063/5.0215845
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Prandtl number effects on heat transfer in viscoelastic turbulent channel flow

Kyoungyoun Kim

Abstract: In viscoelastic turbulent wall-bounded flows, the suppression of near-wall vortical structures due to viscoelastic stress significantly reduces both the frictional drag and heat transfer. To investigate the effect of the Prandtl number (Pr) on the heat transfer reduction rate (HTR), we conducted a series of direct numerical simulations of passive scalar transport using the finitely extensible nonlinear elastic-Peterlin (FENE-P) model for a viscoelastic turbulent channel flow. Various values of Pr from 0.1 to 5… Show more

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