At high superheat, bubble growth is rapid and the heat transfer is dominated by radial convection. This has been found, in the case of a droplet boiling within another liquid and in the case of a bubble growing on a heated wall, leading to similar bubble growth curves. Based on an experimental parametric study for the droplet-boiling case, an empirical model was developed for the prediction of bubble growth, within the radial convection dominated regime (the RCD model) occurring only at high superheat. This model suggests a dependence of R∼t1/3—equivalent to a Nusselt number decreasing over time (Nu∼t−1/3), as opposed to R∼t1/2 —equivalent to a highly-unlikely constant Nusselt number, in most other models. The new model provides accurate prediction for both the droplet boiling and nucleate pool boiling cases, in the medium-high superheat range (0.26<Ste <0.41, 0.19<Ste<0.30, accordingly). By comparison, the new RCD model shows a more consistent prediction, than previous empirical models. However, in the nucleate boiling case, the RCD model requires the foreknowledge of the departure diameter, for which a reliable model still is lacking.
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The Dynamics of Bubble Growth at Medium-High Superheat: Boiling in an Infinite Medium and on a Wall Available to Purchase
Herman D. Haustein,
Herman D. Haustein
Mem. ASME
Institute of Heat and Mass Transfer,
Faculty of Mechanical Engineering,
e-mail: [email protected]
Institute of Heat and Mass Transfer,
Faculty of Mechanical Engineering,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
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Alon Gany,
Alon Gany
Professor
Mem. ASME
Fine Rocket Propulsion Lab,
Faculty of Aerospace Engineering,
e-mail: [email protected]
Mem. ASME
Fine Rocket Propulsion Lab,
Faculty of Aerospace Engineering,
Technion – Israel Institute of Technology
,Haifa, 32000
, Israel
e-mail: [email protected]
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Georg F. Dietze,
Georg F. Dietze
Mech. Eng. Faculty,
Inst. of Heat & Mass Transfer,
e-mail: [email protected]
Inst. of Heat & Mass Transfer,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
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Ezra Elias,
Ezra Elias
Professor
Mech. Eng. Faculty,
e-mail: [email protected]
Mech. Eng. Faculty,
Technion – Israel Institute of Technology
,Haifa, 32000
, Israel
e-mail: [email protected]
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Reinhold Kneer
Reinhold Kneer
Professor
Institute Head Mech. Eng.
Faculty Inst. of Heat and Mass Transfer,
e-mail: [email protected]
Institute Head Mech. Eng.
Faculty Inst. of Heat and Mass Transfer,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
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Herman D. Haustein
Mem. ASME
Institute of Heat and Mass Transfer,
Faculty of Mechanical Engineering,
e-mail: [email protected]
Institute of Heat and Mass Transfer,
Faculty of Mechanical Engineering,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
Alon Gany
Professor
Mem. ASME
Fine Rocket Propulsion Lab,
Faculty of Aerospace Engineering,
e-mail: [email protected]
Mem. ASME
Fine Rocket Propulsion Lab,
Faculty of Aerospace Engineering,
Technion – Israel Institute of Technology
,Haifa, 32000
, Israel
e-mail: [email protected]
Georg F. Dietze
Mech. Eng. Faculty,
Inst. of Heat & Mass Transfer,
e-mail: [email protected]
Inst. of Heat & Mass Transfer,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
Ezra Elias
Professor
Mech. Eng. Faculty,
e-mail: [email protected]
Mech. Eng. Faculty,
Technion – Israel Institute of Technology
,Haifa, 32000
, Israel
e-mail: [email protected]
Reinhold Kneer
Professor
Institute Head Mech. Eng.
Faculty Inst. of Heat and Mass Transfer,
e-mail: [email protected]
Institute Head Mech. Eng.
Faculty Inst. of Heat and Mass Transfer,
RWTH Aachen University
,Aachen, NRW, 52056
, Germany
e-mail: [email protected]
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received February 28, 2012; final manuscript received February 16, 2013; published online June 6, 2013. Assoc. Editor: Bruce L. Drolen.
J. Heat Transfer. Jul 2013, 135(7): 071501 (9 pages)
Published Online: June 6, 2013
Article history
Received:
February 28, 2012
Revision Received:
February 16, 2013
Citation
Haustein, H. D., Gany, A., Dietze, G. F., Elias, E., and Kneer, R. (June 6, 2013). "The Dynamics of Bubble Growth at Medium-High Superheat: Boiling in an Infinite Medium and on a Wall." ASME. J. Heat Transfer. July 2013; 135(7): 071501. https://doi.org/10.1115/1.4023746
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