Research Papers: Two-Phase Flow and Heat Transfer

Impact of Flow Dynamics on the Heat Transfer of Bubbly Flow in a Microchannel

[+] Author and Article Information
Farzad Houshmand

e-mail: farzad.houshmand@gmail.com

Yoav Peles

e-mail: pelesy@rpi.edu
Department of Mechanical,
Aerospace, and Nuclear Engineering,
Rensselaer Polytechnic Institute,
110 8th Street,
Troy, NY 12180

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Heat Transfer. Manuscript received October 24, 2012; final manuscript received August 13, 2013; published online November 7, 2013. Assoc. Editor: Ali Ebadian.

J. Heat Transfer 136(2), 022902 (Nov 07, 2013) (8 pages) Paper No: HT-12-1589; doi: 10.1115/1.4025435 History: Received October 24, 2012; Revised August 13, 2013

During nucleate flow boiling, the bubble dynamics affect the liquid flow field and the corresponding heat transfer process through several distinct mechanisms. At the microscale, this effect is different than at the macro scale partly because the bubble dimensions are comparable to the characteristic length scale of the channel. Since the process involves several mechanisms, an attempt to isolate and study them independently from one another is desired in order to extend knowledge. To remove the evaporation effect from the heat transfer process, noncondensable gas bubbles were introduced upstream of a 1 mm × 1 mm heater into a 220 μm deep and a 1.5 mm wide microchannel and the heat transfer coefficient was measured and compared to single-phase liquid flow. High speed imaging and micro particle image velocimetry (μ-PIV) measurements were used to elucidate the bubble dynamics and the liquid velocity field. This, in turn, revealed mechanisms controlling the heat transfer process. Acceleration and deceleration of the liquid flow due to the presence of bubbles were found to be the main parameters controlling the heat transfer process.

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Collier, J. G., and Thome, J. R., 1996, Convective Boiling and Condensation, Oxford University Press, New York.
Krishnamurthy, S., and Peles, Y., 2010, “Flow Boiling Heat Transfer on Micro Pin Fins Entrenched in a Microchannel,” ASME J. Heat Transfer, 132(4), p. 041007. [CrossRef]
BasuN., WarrierG. R., and DhirV. K., 2005, “Wall Heat Flux Partitioning During Subcooled Flow Boiling: Part 1—Model Development,” ASME J. Heat Transfer, 127(2), pp. 131–140. [CrossRef]
Bertsch, S. S., Groll, E. A., and Garimella, S. V., 2009, “Effects of Heat Flux, Mass Flux, Vapor Quality, and Saturation Temperature on Flow Boiling Heat Transfer in Microchannels,” Int. J. Multiphase Flow, 35(2), pp. 142–154. [CrossRef]
Kandlikar, S. G., 2004, “Heat Transfer Mechanisms During Flow Boiling in Microchannels,” J. Heat Transfer, 126(1), pp. 8–16. [CrossRef]
Kim, J., 2009, “Review of Nucleate Pool Boiling Bubble Heat Transfer Mechanisms,” Int. J. Multiphase Flow, 35(12), pp. 1067–1076. [CrossRef]
Kuo, C.-J., and Peles, Y., 2009, “Flow Boiling of Coolant (HFE-7000) Inside Structured and Plain Wall Microchannels,” ASME J. Heat Transfer, 131(12), p. 121011. [CrossRef]
Kuo, C.-J., and Peles, Y., 2007, “Local Measurement of Flow Boiling in Structured Surface Microchannels,” Int. J. Heat Mass Transfer, 50, pp. 4513–4526. [CrossRef]
Krishnamurthy, S., and Peles, Y., 2010, “Flow Boiling on Micro Pin Fins Entrenched Inside a Microchannel—Flow Patterns and Bubble Departure Diameter and Bubble Frequency,” ASME J. Heat Transfer, 132(4), p. 041002. [CrossRef]
Betz, A. R., and Attinger, D., 2010, “Can Segmented Flow Enhance Heat Transfer in Microchannel Heat Sinks?,” Int. J. Heat Mass Transfer, 53(19–20), pp. 3683–3691. [CrossRef]
Asthana, A., Zinovik, I., Weinmueller, C., and Poulikakos, D., 2011, “Significant Nusselt Number Increase in Microchannels With a Segmented Flow of Two Immiscible Liquids: An Experimental Study,” Int. J. Heat Mass Transfer, 54(7–8), pp. 1456–1464. [CrossRef]
Han, Y., and Shikazono, N., 2011, “Stabilization of Flow Boiling in a Micro Tube With Air Injection,” Exp. Therm. Fluid Sci., 35(7), pp. 1255–1264. [CrossRef]
Xu, J., Liu, G., Zhang, W., Li, Q., and Wang, B., 2009, “Seed Bubbles Stabilize Flow and Heat Transfer in Parallel Microchannels,” Int. J. Multiphase Flow, 35(8), pp. 773–790. [CrossRef]
Browne, E. A., Michna, G. J., Jensen, M. K., and Peles, Y., 2010, “Experimental Investigation of Single-Phase Microjet Array Heat Transfer,” ASME J. Heat Transfer, 132, p. 041013. [CrossRef]
Kline, S. J., and McClintock, F. A., 1953, “Describing Uncertainties in Single-Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 75(1), pp. 3–8.
Elcock, D., Honkanen, M., Kuo, C., Amitay, M., and Peles, Y., 2011, “Bubble Dynamics and Interactions With a Pair of Micro Pillars in Tandem,” Int. J. Multiphase Flow, 37(5), pp. 440–452. [CrossRef]
Elcock, D., Jung, J., Kuo, C.-J., Amitay, M., and PelesY., 2011, “Interaction of a Liquid Flow Around a Micropillar With a Gas Jet,” Phys. Fluids, 23(12), p. 122001. [CrossRef]
Shah, R. K., and London, A. L., 1978, Laminar Flow Forced Convection in Ducts, Advances in Heat Transfer, (Supplement 1), Academic Press, New York.
Han, Y., and Shikazono, N., 2009, “Measurement of Liquid Film Thickness in Micro Square Channel,” Int. J. Multiphase Flow, 35(10), pp. 896–903. [CrossRef]
Bretherton, F. P., 1961, “The Motion of Long Bubbles in Tubes,” J. Fluid Mech., 10, pp. 166–188. [CrossRef]


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Fig. 1

Micro device's schematics

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Fig. 2

Micro device's package

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Fig. 3

Schematics of experimental setup

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Fig. 12

Velocity field around developing bubbles injected from Orifice I; jl = 0.95, jg = 0.25 (m/s)

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Fig. 13

effect of bubbles on heat transfer (Orifice II)

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Fig. 14

Velocity field around the bubbles injected from Orifice II

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Fig. 11

Velocity field around the bubbles injected from Orifice I

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Fig. 10

Effect of bubbles on the heat transfer (orifice I)

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Fig. 9

Temperature change during the bubble injection (Orifice I); jl = 1.24, jg = 0.30 (m/s)

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Fig. 8

Average Nusselt number for single-phase water flow

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Fig. 7

Bubble frequency (Orifice II)

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Fig. 6

Bubble frequency (Orifice I)

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Fig. 5

Sequence of high speed images from bubble growth and detachment at 6300 fps; jl = 0.95, jg = 0.25 (m/s)

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Fig. 4

Bubbles before detachment at different flow rates



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