The effect of inlet constriction on bubble growth during flow boiling in microchannels

A comparative study of flow boiling heat transfer in three different configurations of microchannels

“…They observed that the bubble formed due to vapour generation had a tendency to move towards the unrestricted end. Later on Mukherjee and Kandlikar [3] numerically simulated a growing bubble placed near the inlet constriction of the channel. They concluded that due to inlet constriction, velocity was significantly increased in the upstream of the channel which helped in flushing out the clogged bubble towards downstream direction of the channel.…”

Effect of taper on pressure recovery during flow boiling in open microchannels with manifold using homogeneous flow model

“…However, low heat transfer performance and excessive pressure drop remain a concern. Providing a variable (increasing) flow cross-sectional area along the flow length, a concept introduced by Mukherjee and Kandlikar [10,11], has garnered a lot of attention. Diverging channels [12,13], stepped microchannels [14,15] and expanding microchannels [16] have all been investigated with promising results.…”

“…It has shown a good predictive ability for both adiabatic http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014. 11.080 0017-9310/Ó 2014 Elsevier Ltd. All rights reserved. and diabatic conditions, especially in the bubbly, churn and wispy annular regimes, where uniform phase velocities is a reasonable approximation.…”

Experimental Measurements of Critical Heat Flux in Expanding Microchannel Arrays

“…Mukherjee and Kandlikar [5,6] considered the effect of an inlet constriction to be beneficial on reducing pressure oscillations and ' consequently enhancing CHF and posited a beneficial effect from a series of finite constrictions. An expanding vapor bubble in such a channel was modeled and the output was promising.…”

“…Expansion allowed the bubble growth to proceed predominately downstream, somewhat ameliorating the flow reversa] that can be introduced by bubb]e expansion in a straight channe]. Mukherjee and Kandlikar [5,6] allowed that a series of finite constrictions cou]d be a cha]lenge to manufacture and suggested that continuous expansion would serve better than none.…”