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Title: Area of bubble influence due to sliding bubbles in subcooled boiling flow

Abstract

The heat transfer effect of sliding bubbles is discussed in two aspects based on new experimental findings: (i) the area of bubble influence and (ii) bubble sliding characteristics influencing the degree of wall heat transfer. One notable finding was that the bubble sliding behavior, characterized by sliding trajectories, played a crucial role in determining the area of bubble influence and the bubble influence factor (K). Also, such sliding characteristic was observed strongly dependent on the sliding bubble size. An empirical model has been proposed based on this finding to evaluate the bubble influence factor (K) for the sliding bubbles. Another experimental finding was that the bubble sliding characteristic, represented by bubble spreading factor (S), had a significant impact on the degree of wall heat transfer induced by sliding bubbles. This is due to the fact that the bubbles spread across the heater width as they slid downstream, which reduced the effective frequency of sliding bubbles per unit wall area. These new findings not only improve our understanding of the heat transfer associated with sliding bubbles, but also are expected to contribute to improving the insight in the existing CFD boiling heat transfer models.

Authors:
ORCiD logo [1];  [2];  [2]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Texas A&M Univ., College Station, TX (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1557593
Alternate Identifier(s):
OSTI ID: 1548452
Report Number(s):
[INL/JOU-17-44229-Rev000]
[Journal ID: ISSN 0017-9310]
Grant/Contract Number:  
[AC07-05ID14517; AC05-00OR22725]
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Heat and Mass Transfer
Additional Journal Information:
[ Journal Volume: 125; Journal Issue: C]; Journal ID: ISSN 0017-9310
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Sliding bubble; Area of bubble influence; bubble sliding trajectory; subcooled boiling flow

Citation Formats

Yoo, Junsoo, Estrada-Perez, Carlos E., and Hassan, Yassin A. Area of bubble influence due to sliding bubbles in subcooled boiling flow. United States: N. p., 2018. Web. doi:10.1016/j.ijheatmasstransfer.2018.04.058.
Yoo, Junsoo, Estrada-Perez, Carlos E., & Hassan, Yassin A. Area of bubble influence due to sliding bubbles in subcooled boiling flow. United States. doi:10.1016/j.ijheatmasstransfer.2018.04.058.
Yoo, Junsoo, Estrada-Perez, Carlos E., and Hassan, Yassin A. Fri . "Area of bubble influence due to sliding bubbles in subcooled boiling flow". United States. doi:10.1016/j.ijheatmasstransfer.2018.04.058. https://www.osti.gov/servlets/purl/1557593.
@article{osti_1557593,
title = {Area of bubble influence due to sliding bubbles in subcooled boiling flow},
author = {Yoo, Junsoo and Estrada-Perez, Carlos E. and Hassan, Yassin A.},
abstractNote = {The heat transfer effect of sliding bubbles is discussed in two aspects based on new experimental findings: (i) the area of bubble influence and (ii) bubble sliding characteristics influencing the degree of wall heat transfer. One notable finding was that the bubble sliding behavior, characterized by sliding trajectories, played a crucial role in determining the area of bubble influence and the bubble influence factor (K). Also, such sliding characteristic was observed strongly dependent on the sliding bubble size. An empirical model has been proposed based on this finding to evaluate the bubble influence factor (K) for the sliding bubbles. Another experimental finding was that the bubble sliding characteristic, represented by bubble spreading factor (S), had a significant impact on the degree of wall heat transfer induced by sliding bubbles. This is due to the fact that the bubbles spread across the heater width as they slid downstream, which reduced the effective frequency of sliding bubbles per unit wall area. These new findings not only improve our understanding of the heat transfer associated with sliding bubbles, but also are expected to contribute to improving the insight in the existing CFD boiling heat transfer models.},
doi = {10.1016/j.ijheatmasstransfer.2018.04.058},
journal = {International Journal of Heat and Mass Transfer},
number = [C],
volume = [125],
place = {United States},
year = {2018},
month = {4}
}