THE CALCULATION OF SWIRLING FLOW OF VISCOUS HEAT-CONDUCTING GAS IN A SLIGHTLY DIVERGENT PIPE WITH HEAT INPUT

Results are described of numerical investigations of viscous swirling flow in a slightly divergent pipe in the presence of heat energy input to the flow. The initial stage in the development of swirling flow is treated, with the heat energy input accomplished in two ways, namely, by local heating of a portion of the pipe surface, when the temperatu re of the inner surface of the pipe is a fully preassigned function of longitudinal coordinate, and by way of volume energy input, when the pipe wall temperature is maintained constant and a localized volume he at source of energy is preassigned. It is shown that the volume energy input in the vicinity of the swirling flow axis may cause significant rearrangement of swirling flow and, consequently, the process of heat input must be included during analysis of the development of swirling flows of compressible heat-conducting gas and investigation of its st ability characteristics.