The purpose of this shorter communication is twofold:(a) to establish a relationship between
vortex shedding lock-on and heat transfer enhancement from a tube in cross-flow in the light
of new findings in the published literature; and (b) to report additional results on the lock-on
behaviour of an in-line tube bundle in pulsating cross-flow not previously published. The
discussion of the results demonstrates the potential use of flow pulsations as a means of
heat transfer enhancement in shell-and-tube heat exchangers together with useful …