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Research Papers: Two-Phase Flow and Heat Transfer

Thermosolutocapillary Convection in an Open Rectangular Cavity With Dynamic Free Surface

[+] Author and Article Information
Xiaoming Zhou

Institute of Engineering Thermal Physics,
Chinese Academy of Sciences,
Beijing 100190, China
e-mail: xmzhou@iet.cn

Xiulan Huai

Institute of Engineering Thermal Physics,
Chinese Academy of Sciences,
Beijing 100190, China
e-mail: hxl@iet.cn

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received June 13, 2014; final manuscript received October 31, 2014; published online April 16, 2015. Assoc. Editor: Zhixiong Guo.

J. Heat Transfer 137(8), 082901 (Aug 01, 2015) (9 pages) Paper No: HT-14-1402; doi: 10.1115/1.4029270 History: Received June 13, 2014; Revised October 31, 2014; Online April 16, 2015

Thermosolutocapillary convection within a rectangular cavity with dynamic free surface is numerically investigated in the absence of gravitational effects. Both the temperature and solute concentration gradients are applied horizontally. The free surface deformation is captured by the level set method. Two cases of the ratio of thermal to solutal Marangoni number Rσ < −1 and Rσ = −1 are considered. For Rσ< −1, the free surface bulges out near the left wall and bulges in near the right wall; with the increase of Marangoni number, the free surface deformation decreases and with the increase of capillary number and aspect ratio, it increases. For Rσ= −1, the free surface bulges out near the left and right walls and bulges in at the central zone; with the increase of Marangoni number, the free surface deformation mode is changed and with the increase of capillary number and aspect ratio, the free surface deformation increases.

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Figures

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Fig. 2

Comparison of free surface deformation of liquid bridge with Sim’s results

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Fig. 3

Contours of (a) temperature and (b) solute concentration with fixed free surface for Rσ = −1, Re = 200, Le = 100, Pr = 5, and A = 2

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Fig. 4

Streamlines distribution with Rσ = −8, Ca = 0.1, Le = 100, A = 4, and various Ma ((a) Ma=10, (b) Ma=50, (c) Ma=100, (d) Ma=200)

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Fig. 5

Isotherms distribution with Rσ = −8, Ca = 0.1, Le = 100, A = 4, and various Ma ((a) Ma=10, (b) Ma=50, (c) Ma=100, (d) Ma=200)

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Fig. 6

Solute concentration distribution with Rσ = −8, Ca = 0.1, Le = 100, A = 4, and various Ma ((a) Ma=10, (b) Ma=50, (c) Ma=100, (d) Ma=200)

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Fig. 7

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −8, Ca = 0.1, Le = 100, A = 4, and various Ma

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Fig. 8

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −8, Ma = 10, Le = 10, A = 4, and various Ca

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Fig. 9

Streamlines distribution with Rσ = −8, Ma = 10, Le = 10, Ca = 0.1, and various A ((a) A=2, (b) A=4, (c) A=6, (d) A=8)

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Fig. 10

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −8, Ma = 10, Le = 10, Ca = 0.1, and various A

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Fig. 11

Streamlines distribution with Rσ = −1, Ca = 0.1, Le = 10, A = 4, and various Ma ((a) Ma=10, (b) Ma=50, (c) Ma=100, (d) Ma=200)

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Fig. 12

Nondimensional surface tension distribution with Rσ = −1, Ca = 0.1, Le = 10, A = 4, and various Ma

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Fig. 13

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −1, Ca = 0.1, Le = 10, A = 4, and various Ma

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Fig. 14

Streamlines distribution with Rσ = −1, Ma = 10, Le = 10, A = 4, and various Ca ((a) Ca=0.01, (b) Ca=0.05, (c) Ca=0.1, (d) Ca=0.15)

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Fig. 15

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −1, Ma = 10, Le = 10, A = 4, and various Ca

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Fig. 16

Streamlines distribution with Rσ = −1, Ma = 10, Le = 10, Ca = 0.1, and various A ((a) A=2, (b) A=4, (c) A=6, (d) A=8)

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Fig. 17

Free surface (a), surface pressure (b), and surface horizontal velocity (c) distributions with Rσ = −1, Ma = 10, Le = 10, Ca = 0.1, and various A

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