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

John S. Paschkewitz, David M. Pratt

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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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What this paper is about

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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Available 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.

Key concepts: Electrohydrodynamics, Heat transfer enhancement, Materials science, Heat transfer, Mechanics, Working fluid, Electrode, Heat transfer coefficient

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Electrohydrodynamic (EHD) Heat Transfer Enhancement in an Aviation Working Fluid: Effect of Electrode Material and Polarity — Research Paper | ScholarLens