Mapping the amplitude and frequency of pressure drop oscillations via a transient numerical model to assess their severity during microchannel flow boiling

被引:0
作者
Rahman, Md Emadur [1 ]
Weibel, Justin A. [1 ]
机构
[1] Purdue Univ, Cooling Technol Res Ctr, Sch Mech Engn, W Lafayette, IN 47907 USA
关键词
Microchannel heat sink; Flow boiling instability; Pressure drop oscillations; Stability analysis; Two-phase flow; 2-PHASE FLOW; HEAT-TRANSFER; ACTIVE CONTROL; INSTABILITIES; DIAMETER; WATER; FLUX; TUBE;
D O I
暂无
中图分类号
O414.1 [热力学];
学科分类号
摘要
Flow boiling in microchannel heat sinks offers effective cooling for high-power electronics devices and compact heat exchangers in many other industrial applications. However, flow boiling instabilities, in particular pressure drop oscillations, can occur in these heat sinks and may reduce their performance by causing premature initiation of critical heat flux (CHF) or deterioration of the heat transfer coefficient. Predicting the occurrence and severity of pressure drop oscillations is hence important to ensure reliable operation. We perform stability analysis using bifurcation theory to determine the effect of various operating and geometric parameters on these oscillations in microchannel heat sinks. The analysis identifies the unstable (where pressure drop oscillations occur) and stable regions of operation based on the mass flux, heat input, and amount of inlet restriction. As the stability map does not yield information regarding the severity of oscillations in the unstable region, the effects of these parameters on the amplitude and period of pressure drop oscillations are also assessed via a transient numerical model. Surveying these parameters over the unstable region allows assessment of potential performance reductions of the heat sink due to pressure drop oscillations.
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页数:11
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共 38 条
  • [1] Heat transfer characteristics of flow boiling in a single horizontal microchannel
    Celata, Gian Piero
    Saha, Sujoy Kumar
    Zummo, Giuseppe
    Dossevi, Denam
    [J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2010, 49 (07) : 1086 - 1094
  • [2] Cheng P., 2006, ADV HEAT TRANSFER, V39, P461, DOI [DOI 10.1016/S0065-2717(06)39005-3, 10.1016/S0065-2717, DOI 10.1016/S0065-2717]
  • [3] Review on pressure drop oscillations in boiling systems
    Chiapero, E. Manavela
    Fernandino, M.
    Dorao, C. A.
    [J]. NUCLEAR ENGINEERING AND DESIGN, 2012, 250 : 436 - 447
  • [5] Impact of Pressure Drop Oscillations on Surface Temperature and Critical Heat Flux During Flow Boiling in a Microchannel
    Clark, Matthew D.
    Weibel, Justin A.
    Garimella, Suresh, V
    [J]. IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY, 2021, 11 (10): : 1634 - 1644
  • [6] Effect of liquid cooling system structure on lithium-ion battery pack temperature fields
    Ding, Yuzhang
    Ji, Haocheng
    Wei, Minxiang
    Liu, Rui
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2022, 183
  • [7] Eborn J., 2001, On model libraries for thermo-hydraulic applications
  • [8] The steady propagation of a semi-infinite bubble into a tube of elliptical or rectangular cross-section
    Hazel, AL
    Heil, M
    [J]. JOURNAL OF FLUID MECHANICS, 2002, 470 : 91 - 114
  • [9] A Review of two-phase flow dynamic instabilities in tube boiling systems
    Kakac, S.
    Bon, B.
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2008, 51 (3-4) : 399 - 433
  • [10] Stabilization of flow boiling in microchannels using pressure drop elements and fabricated nucleation sites
    Kandlikar, SG
    Kuan, WK
    Willistein, DA
    Borrelli, J
    [J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2006, 128 (04): : 389 - 396