CRITICAL HEAT FLUX IN COOLING CHANNELS FOR FLOW-FIELD PROBES

被引：0

作者：

Sykes, David M. ^{[1
]}

Cole, Gregory S. ^{[1
]}

Staples, Daniel A. ^{[1
]}

Kosar, Ali ^{[2
]}

Bergles, Arthur E. ^{[3
]}

机构：

[1] Mainstream Engn Corp, Rockledge, FL 32955 USA

[2] Sabanci Univ, Istanbul, Turkey

[3] Rensselaer Polytech Inst, Troy, NY USA

来源：

PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE - 2010, VOL 1: BIO HEAT TRANSFER, BOILING HEAT TRANSFER, COMPUTATIONAL HEAT TRANSFER | 2010年

关键词：

D O I：

暂无

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Probes (sampling, temperature, pressure) for high-temperature environments, such as gas turbine combustors, can survive only if they are cooled. To keep probe size small, the cooling passages must be microchannels, [O] 100 micrometer internal diameter. For logistical reasons, the length-to-diameter ratio is considerable. Heat fluxes are high, so that boiling occurs even with high velocities. The limiting factor for probe survivability, then, is the critical heat flux (CHF). This paper summarizes an experimental study of CHF in cooling channels that might be used for probes. A CHF correlation for water coolant is developed for design. An orifice at the channel inlet, originally conceived for enhancement, was found to dramatically improve the flow stability and increase the CHF. Pumping power requirements for plain tubes and orificed tubes are also documented.

引用

页码：703 / +

页数：4

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