On the oscillatory nature of heat transfer in steady annular flow
Name
#1_MITOA_On the oscillatory nature of heat transfer in steady annular flow.pdf
Description
Accepted version
Size
1.57 MB
Format
Adobe PDF
Checksum (MD5)
5d055c2499257029a8bca49c08c8cd22
Author(s)
Su, Guanyu
D'Aleo, Francesco Paolo
Phillips, Bren Andrew
Streich, Robin Mark
Al-Safran, Eissa
Buongiorno, Jacopo
Prasser, Horst-Michael
Date Issued
September 2019
Journal
International Communications in Heat and Mass Transfer
Publisher
Elsevier BV
Citation
Su, Guan-Yu et al. "On the oscillatory nature of heat transfer in steady annular flow." International Communications in Heat and Mass Transfer 108 (November 2019): 104328 © 2019 Elsevier Ltd
Version
Author's final manuscript
Abstract
Using a combination of high-speed infrared thermography and electrical-conductance sensors, we observe the surprisingly large effect of surface waves on the instantaneous heat transfer response at the heated wall in nominally-steady upward annular flow of steam-water mixtures. While the heat flux applied at the wall is constant, the passage of the waves causes significant periodic oscillations of the local heat transfer coefficient and wall superheat in the forced convective evaporation regime, with amplitudes and periods much higher than the fluctuations due to turbulent eddies. We discuss the physical mechanisms potentially responsible for the experimental observations.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1016/j.icheatmasstransfer.2019.104328
