Experimental investigation of electrohydrodynamic conduction pumping of various liquids film using flush electrodes

Electrohydrodynamic conduction pumping of free surface liquid film, using flush electrodes has been investigated experimentally for various working fluids. The effective factors in determination of flow direction have been classified and investigated comprehensively. Furthermore, saliency of these factors on hydrodynamic behavior using various electrodes configurations and different fluids has been studied. Results show that the mobility difference and asymmetry of electrodes are main factors in pumping direction and performance, wherein various conditions, each of these factors becomes dominant. Also, efficiency of free surface liquid film conduction pumping has been defined and used to determine the best operating conditions.