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Review Article

Lattice Boltzmann Simulations of Macro/Microscale Effects on Saturated Pool Boiling Curves for Heated Horizontal Surfaces

[+] Author and Article Information
Ping Cheng

Fellow ASME
School of Mechanical Engineering,
Shanghai Jiao-Tong University,
Shanghai 200240, China
e-mail: pingcheng@sjtu.edu.cn

Chaoyang Zhang, Shuai Gong

School of Mechanical Engineering,
Shanghai Jiao-Tong University,
Shanghai 200240, China

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received October 9, 2016; final manuscript received February 6, 2017; published online June 21, 2017. Assoc. Editor: Satish G. Kandlikar.

J. Heat Transfer 139(11), 110801 (Jun 21, 2017) (7 pages) Paper No: HT-16-1649; doi: 10.1115/1.4036578 History: Received October 09, 2016; Revised February 06, 2017

Results of lattice Boltzmann (LB) simulations of macroscale effects (heating modes, heater size, and saturation temperature) as well as microscale effects (wettability and roughness) on saturated pool boiling from superheated horizontal surfaces are summarized in this paper. These effects on pool boiling curves from natural convection through nucleate boiling to critical heat flux (CHF) and from transition boiling to film boiling are illustrated. It is found that macroscale effects have negligible influence on nucleate boiling heat transfer, and Rohsenow's correlation equation fits well with the simulated nucleate boiling heat transfer on smooth hydrophilic and hydrophobic horizontal surfaces. Both macroscale and microscale effects have important influence on critical heat flux and transition boiling heat transfer.

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Figures

Grahic Jump Location
Fig. 1

Schematic of the computation domain [17]

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Fig. 2

Effects of two heating methods (controlled wall heat flux versus controlled wall temperature) on saturated pool boiling curves for a smooth heater (with LH = 12l0, H = 1.5l0) at Tsat = 0.85Tc [19]: (a) hydrophilic surfaces and (b) hydrophobic surfaces [19]

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Fig. 3

Effects of heater size on saturated pool boiling curves for smooth heaters (with a thickness H = 1.6l0) under controlled wall heat flux conditions [20]: (a) hydrophilic surfaces and (b) hydrophobic surfaces [20]

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Fig. 4

Effects of saturation temperature on saturated pool boiling curves for smooth heaters (with LH = 12 − 14l0 and H = 1.5l0) under controlled wall heat flux conditions [19]: (a) hydrophilic surfaces and (b) hydrophobic surfaces [19]

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Fig. 5

Comparison of simulated pool boiling curves with Rohsenow's correlation [6] for nucleate boiling on smooth heaters at two different saturation temperatures under controlled wall heat flux conditions [19]: (a) Tsat = 0.85Tc and (b) Tsat = 0.9Tc [19]

Grahic Jump Location
Fig. 6

Effects of wettability on saturated pool boiling curves for smooth heaters (LH = 11.3l0, H = 1.1l0) at Tsat = 0.9Tc under controlled wall temperature conditions [17]

Grahic Jump Location
Fig. 7

Effects of roughness and wettability on saturated pool boiling curves for heaters (with a length of LH = 11.3l0 and thickness H = 1.1l0) under controlled wall temperature conditions [18]: (a) roughness effects on boiling curves of hydrophilic surfaces, (b) roughness effects on boiling curves of hydrophobic surfaces, and (c) wettability effects on saturated boiling curves of rough surfaces

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