Heat transfer from a cylinder in pulsating cross-flow
V.M. Molochnikov1,2, N.I. Mikheev1,2, A.N. Mikheev1, and A.A. Paereliy1
1Kazan Scientific Center RAS, Kazan, Russia
2Kazan National Research Technical University named after A.N.Tupolev, Kazan, Russia
E-mail: vmolochnikov@mail.ru
Keywords: heat transfer, cylinder in cross-flow, forced flow pulsations, dimensionless number, empirical correlation, correction factor
Pages: 569–575
Abstract
The paper presents
results on heat transfer from a cylinder in pulsating flow. The results are
local heat transfer distributions that match four different flow modes identified
previously by the authors. A new kind of dimensionless number was introduced
for pulsating flows: this is a ratio of flow acceleration during unsteady
movement to the centrifugal acceleration due to streamlines bending over the
cylinder. The experimental data were generalized as a dependency of the average
heat transfer on the new dimensionless criterion. The generalization offered a
correction factor to a traditional relation for heat transfer between a
cylinder and air flow past the cylinder; this correction takes into account the
effect of parameters of forced flow pulsations on the average heat transfer.
DOI: 10.1134/S0869864317040084
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