Abstract
The present paper deal with a less known subject from the unconventional technologies namely the fluid flow through a working zone situated between the tool and workpiece electrodes. One take into account the possible types of flow, one establish the mathematical model of the flow and based on this model one determine the process parameters and their influence on the fluid behavior during the process. One present some experimental results for the EDMUS process which confirm the concordance between the theoretical model and the experimental values of the rheological parameters. Key words: electrical discharge, shear stress, shear speed, dielectric liquid