THE EQUATION MOTION OF AIR IN THE RING UNIFORMLY SUCKING IN AIR DUCT OF VARIABLE CROSS-SECTION
Technological equipment for different purposes and in terms of having a round shape release harmful substances enter in breathing zone of worker. For capture these substances are used circular air inlet. Catching efficiency depending of the design air inlet and accuracy of methods then calculating. In this paper we are derive the equations of motion of air in the ring uniformly sucking air ducts of variable cross-section.