Analogy of Mass, Heat and Momentum Transfer to Pulsation Flow from Inside Tube Wall

Abstract

1) Summarizing the data obtained from the experiments on the mass, heat and momentum transfer relative to the pulsed flow from the inside tube wall, the authors propose to represent the fractional increments of pulsed J-factor and pulsed friction factor vs. the values of the steady flow by the following non-dimentional equations:
for mass transfer
for heat transfer,
for momentum transfer,
2) In the case of momentum transfer, however, analogical relationship of the mass and heat transfer do not show good agreement. To investigate the discrepancy. the fractional increment of friction factor was calculated from the velocity distribution of pulsed flow in the tube, resulting in the follwing qeuation.
3) From the above results, it may be concluded that the peculiar effect of pulsation on the mass and heat transfer is caused by the break in the boundary layer of the flow.