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强化传热期刊
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ISSN 打印: 1065-5131
ISSN 在线: 1026-5511

强化传热期刊

DOI: 10.1615/JEnhHeatTransf.v7.i6.20
pages 371-383

Electrohydrodynamic (EHD) Heat Transfer Enhancement in an Aviation Working Fluid: Effect of Electrode Material and Polarity

J. S. Paschkewitz
Mechanical and Thermal Systems Branch, Air Force Research Laboratory, Wright-Patterson AFB, Ohio, USA
David M. Pratt
Thermal Structures Branch, Air Vehicles Directorate, Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433, USA

ABSTRACT

Electrohydrodynamic heat transfer enhancement in the aviation coolant PAO was examined using a concentric wire-cylinder test section. Stainless steel (alloy 304), brass (alloy 260), and bronze (alloy 510) wire electrodes were used with both negative and positive polarity. The outer tube was 316 stainless steel. Bronze gave enhancements over an order of magnitude greater than either brass or stainless steel, with smaller increases in pressure drop and lower electrical power requirements for both positive and negative polarities. Several explanations are given for the differences in performance are discussed.


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