Study of Near Wall Hydrodynamics and Mass Transfer under Magnetic Field Influence

Abstract

The influence of magnetic field on near wall hydrodynamics and mass transfer was studied by means of two experimental methods. The first one is based on direct mass transfer measurements by means of radio-active isotopes. The second method is electrochemical flow measurements. The experiments show that non-stationary magnetic field is more efficient for intensification of the near wall mass transfer than the stationary one. Also, non-uniform in space magnetic field is more efficient for increasing of wall shear stress value and thus for intensification of mass transfer processes than a uniform one of the same intensity. This effect can be explained by a resonance brake action of inertial and electromagnetic forces on the mean flow. As a result, near wall liquid is significantly accelerated.