Ledinegg instability in microchannels

被引：149

作者：

Zhang, Tiejun ^{[1
,2
]}

Tong, Tao ^{[3
]}

Chang, Je-Young ^{[4
]}

Peles, Yoav ^{[1
]}

Prasher, Ravi ^{[5
]}

Jensen, Michael K. ^{[1
]}

Wen, John T. ^{[6
]}

Phelan, Patrick ^{[5
]}

机构：

[1] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA

[2] Rensselaer Polytech Inst, Ctr Automat Technol & Syst, Troy, NY 12180 USA

[3] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[4] Intel Corp, Chandler, AZ 85226 USA

[5] Arizona State Univ, Dept Mech & Aerosp Engn, Tempe, AZ 85287 USA

[6] Rensselaer Polytech Inst, Dept Elect & Comp Syst Engn, Troy, NY 12180 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2009年 / 52卷 / 25-26期

关键词：

Boiling; Microchannel; Two-phase flow; Flow instability; FLOW; WATER;

D O I：

10.1016/j.ijheatmasstransfer.2009.09.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The static Ledinegg instability in horizontal microchannels under different flow conditions and fluids pertinent to electronics cooling was studied experimentally and numerically. Two fluids, water at sub-atmospheric pressures and refrigerant HFE-7100, were examined for a range of heat fluxes, mass fluxes, and channel hydraulic diameters. Numerical predictions from the developed pressure gradient model agree well with results from the flow boiling experiments. The model was used to quantify the susceptibility of the system to the Ledinegg instability. A parametric instability study was systematically conducted with varying system pressure, heat flux, inlet subcooling, and channel size with and without inlet restrictor. Increasing system pressure and channel diameter, reducing parallel channel number and channel length, and including an inlet restrictor can enhance the flow stability in microchannels. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5661 / 5674

页数：14

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