Transactions of the Japan Society of Mechanical Engineers Series B
Online ISSN : 1884-8346
Print ISSN : 0387-5016
Measurement of Interface Current of Electroosmotic Flow in Doughnut Channel : Evaluation based on Diffuse Double Layer Model(Fluids Engineering)
Dan ZHANGOsami KITOHTatsuo USHIJIMAYoshihiro IWAMOTODaisuke HIRAMATSU
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2010 Volume 76 Issue 771 Pages 1841-1848

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Abstract

Based on diffuse double layer model, the definition of the interface current that flows in an electric double layer (EDL) is given and formulated. To meet the requirement that the experimentally measured interface current assuming that the EDL thickness being extremely thin coincides with the definition, a correction factor is introduced to compensate its simple assumption. The relationship between the interface current and the electroosmotic velocity is also given. Using the experimentally measured interface current and electroosmotic velocity, the effective temperature rise in EDL due to the joule heating by the interface current was estimated and the effect of the interface current on EDL was discussed.

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© 2010 The Japan Society of Mechanical Engineers
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