Internal convective heat transfer to gases in the low-Reynolds-number “turbulent” range
Abstract
For internal vertical gas flow in tubes with strong heating rates at low turbulent Reynolds numbers, a typical experimental observation is that the local Nusselt number varies roughly as the square of the decreasing local Reynolds number. The aim of the present note is to examine this situation. This examination leads to the hypothesis that the behavior results from the evolution of the thermal boundary layer developing within the molecular conduction (~ laminar) layer which is also growing from the wall. Comparisons to direct numerical simulations demonstrate that reasonable predictions are provided by an extension of the Leveque similarity analysis for laminar boundary layers. The present observations modify and improve our fundamental understanding of the process called "relaminarization" in these flows.
- Authors:
-
- University of Idaho, Idaho Falls, ID (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States); Institut fur Kernenergetik und Energiesysteme, Stuttgart/Vaihingen (Germany)
- Institut fur Kernenergetik und Energiesysteme, Stuttgart/Vaihingen (Germany); Institut fur Thermodynamik der Luft- und Raumfahrt, Stuttgart/Vaihingen (Germany)
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Institut fur Kernenergetik und Energiesysteme, Stuttgart/Vaihingen (Germany)
- Publication Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); Ministry of Science, Research and Art Baden-Wurttemberg; USDOE
- OSTI Identifier:
- 1434302
- Alternate Identifier(s):
- OSTI ID: 1484693
- Report Number(s):
- INL/JOU-17-42635; INL/JOU-17-42635-Rev000
Journal ID: ISSN 0017-9310; PII: S0017931017335986; TRN: US1802555
- Grant/Contract Number:
- NE0008412; AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- International Journal of Heat and Mass Transfer
- Additional Journal Information:
- Journal Volume: 121; Journal Issue: C; Journal ID: ISSN 0017-9310
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 99 GENERAL AND MISCELLANEOUS; laminarization; vertical tubes; internal convective heat transfer; gas property variation; low-Reynolds-number turbulent; reverse transition
Citation Formats
McEligot, Donald M., Chu, Xu, Skifton, Richard S., and Laurien, Eckart. Internal convective heat transfer to gases in the low-Reynolds-number “turbulent” range. United States: N. p., 2018.
Web. doi:10.1016/j.ijheatmasstransfer.2017.12.086.
McEligot, Donald M., Chu, Xu, Skifton, Richard S., & Laurien, Eckart. Internal convective heat transfer to gases in the low-Reynolds-number “turbulent” range. United States. https://doi.org/10.1016/j.ijheatmasstransfer.2017.12.086
McEligot, Donald M., Chu, Xu, Skifton, Richard S., and Laurien, Eckart. Wed .
"Internal convective heat transfer to gases in the low-Reynolds-number “turbulent” range". United States. https://doi.org/10.1016/j.ijheatmasstransfer.2017.12.086. https://www.osti.gov/servlets/purl/1434302.
@article{osti_1434302,
title = {Internal convective heat transfer to gases in the low-Reynolds-number “turbulent” range},
author = {McEligot, Donald M. and Chu, Xu and Skifton, Richard S. and Laurien, Eckart},
abstractNote = {For internal vertical gas flow in tubes with strong heating rates at low turbulent Reynolds numbers, a typical experimental observation is that the local Nusselt number varies roughly as the square of the decreasing local Reynolds number. The aim of the present note is to examine this situation. This examination leads to the hypothesis that the behavior results from the evolution of the thermal boundary layer developing within the molecular conduction (~ laminar) layer which is also growing from the wall. Comparisons to direct numerical simulations demonstrate that reasonable predictions are provided by an extension of the Leveque similarity analysis for laminar boundary layers. The present observations modify and improve our fundamental understanding of the process called "relaminarization" in these flows.},
doi = {10.1016/j.ijheatmasstransfer.2017.12.086},
journal = {International Journal of Heat and Mass Transfer},
number = C,
volume = 121,
place = {United States},
year = {Wed Mar 07 00:00:00 EST 2018},
month = {Wed Mar 07 00:00:00 EST 2018}
}
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