Mechanistic modeling of the liquid film shape and heat transfer coefficient in annular-regime microchannel flow boiling

被引:9
|
作者
Patel, Ravi S.
Weibel, Justin A.
Garimella, Suresh V. [1 ]
机构
[1] Purdue Univ, Cooling Technol Res Ctr, NSF IUCRC, Sch Mech Engn, W Lafayette, IN 47907 USA
基金
美国国家科学基金会;
关键词
Two-phase microchannel flow; Annular regime; Mechanistic model; Heat transfer performance; Liquid film thickness; 2-PHASE FLOW; SINKS; WATER;
D O I
10.1016/j.ijheatmasstransfer.2017.06.121
中图分类号
O414.1 [热力学];
学科分类号
摘要
A methodology is proposed for predictive modeling of the liquid-gas interface shape and saturated flow boiling heat transfer coefficient in two-phase microchannel flows within the annular regime. The mechanistic model accounts for the effects of surface tension and interface curvature, gravity, and shear stress in determining the liquid film shape; one-dimensional conduction is assumed to occur across the variable-thickness film to calculate wall heat transfer coefficients locally along the channel length. Model performance is benchmarked against 251 experimentally measured heat transfer coefficient values taken from the literature for annular-regime flow boiling in microchannels of a rectangular crosssection. These data are successfully predicted with a mean absolute error of 21.7%, and 72.1% of the points lie within an error band of 30%. The match to data is poorest at lower vapor qualities corresponding to the onset of the annular regime, for which the heat transfer coefficient is underpredicted; an experimental investigation is performed to better understand the disparity under these operating conditions. Liquid film shapes are measured during adiabatic annular flow through microchannels of square cross-section for a range of channel hydraulic diameters (160 mu m, 510 mu m, 1020 gm) and operating conditions, so as to control the void fraction and Weber number of the flow. Using air and water as the working gas and liquid, respectively, trends in film behavior are identified and compared against model predictions. The experimental findings reveal the non-negligible impact of capillary pumping on the interface morphology at the onset of the annular regime. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:841 / 851
页数:11
相关论文
共 50 条
  • [41] Experimental investigation of the film boiling heat transfer in HeII: Heat transfer coefficient
    Zhang, P
    Murakami, M
    CRYOGENICS, 2005, 45 (01) : 77 - 83
  • [42] HEAT-TRANSFER AUGMENTATION IN INVERTED ANNULAR FILM BOILING
    EDELMAN, Z
    NAOT, D
    ELIAS, E
    CHAMBRE, P
    TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1982, 41 : 385 - 386
  • [43] Convective heat transfer to shear-driven liquid film flow in a microchannel
    Houshmand, Farzad
    Peles, Yoav
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2013, 64 : 42 - 52
  • [44] Heat transfer characteristics of flow boiling in a single horizontal microchannel
    Celata, Gian Piero
    Saha, Sujoy Kumar
    Zummo, Giuseppe
    Dossevi, Denam
    INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2010, 49 (07) : 1086 - 1094
  • [45] Heat transfer and visualization of flow boiling on nanowire surfaces in the microchannel
    Sun, Jia
    Lin, Yuhao
    Li, Junye
    Tang, Weiyu
    Li, Wei
    Ahmad, Waqas
    Zhao, Jianfu
    APPLIED THERMAL ENGINEERING, 2024, 256
  • [46] Numerical study of the impact of the channel shape on microchannel boiling heat transfer
    Magnini, M.
    Matar, O. K.
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2020, 150
  • [47] HEAT TRANSFER AND HYDRODYNAMICS OF SUBCOOLED INVERTED ANNULAR FLOW FILM BOILING ON A SINGLE ROD HEATER
    Yi, Sonny
    Warrier, Gopinath R.
    Dhir, Vijay K.
    IMECE 2009: PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 9, PTS A-C, 2010, : 1709 - 1718
  • [48] Modeling of Heat Transfer in Microchannel Gas Flow
    Lewandowski, Tomasz
    Ochrymiuk, Tomasz
    Czerwinska, Justyna
    JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2011, 133 (02):
  • [49] Pressure drop, boiling heat transfer and flow patterns during flow boiling in a single microchannel
    Huh, Cheol
    Kim, Moo Hwan .
    HEAT TRANSFER ENGINEERING, 2007, 28 (8-9) : 730 - 737
  • [50] The effect of liquid film evaporation on flow boiling heat transfer in a micro tube
    Han, Youngbae
    Shikazono, Naoki
    Kasagi, Nobuhide
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2012, 55 (04) : 547 - 555