The Influence of the Electrophoretic and Polarization Forces on Two Phase Flow Redistribution in a Horizontal Annular Tube
S. Nangle-Smith, H. Sadek, and J. S. Cotton
Department of Mechanical Engineering, McMaster University, Canada
Abstract- The objective of this study is to investigate the effect of high voltage DC waveforms on two phase flow redistribution. The flow patterns in a two phase flow system directly influences the system heat transfer and pressure drop, and by extension, the system performance. Electrohydrodynamics (EHD) induces flow pattern redistribution and therefore can provide a low power, rapid method of enhancement of two phase flow systems such as heat exchangers. The heat transfer characteristics can be varied by modifying the proportion of liquid or vapor in contact with the heat transfer surface. This study investigates the effect of the electrophoretic and polarization components of the EHD force on two phase flow redistribution in an annular channel for comparable cases of condensation and evaporation.
Keywords- Electrohydrodynamics, two-phase flow, polarity, electrophoretic, polarization