Electrohydrodynamic Induction Pumping of a Stratified Liquid/Vapor Medium in the Presence of Heat Transfer

Abstract

The effect of heat transfer on the performance of the EHD induction pumping of a liquid/vapor stratified medium is theoretically investigated. The analytical domain considered is represented by a two-dimensional developing plane channel flow of a liquid separated from a vapor by a horizontal interface in a channel bound from below and above by two infinite rigid boundaries. The electrodes generating the electric traveling wave are placed at the bottom of the liquid film. The liquid temperature is assumed constant at the interface of liquid/vapor media while the liquid is cooled or heated at the lower boundary. The dimensionless numerical results are obtained for three different dimensionless wall heat fluxes representing no heat transfer, cooling, and heating at the lower boundary. The controlling parameters include: vapor height, liquid height, voltage, wavelength, and frequency. For the selected operating conditions, the performance of the pump increases with increasing wall heat flux.