 flow electr conduct fluid flat plate presenc transvers magnet field flow electr conduct fluid flat plate presenc transvers magnet field magnet field control motion electr conduct fluid studi boundari-layer solut flow flat plate magnet field fix rel plate fluid equat integr numer transvers magnet field veloc temperatur profil skin friction rate heat transfer conclud skin friction heat-transfer rate reduc transvers magnet field fix rel plate increas fix rel fluid total drag increas case studi 