Influence of the Swirling of an Equilibrially Dissociating Gas Flow in a Tube on Heat Exchange and Chemical Reaction in it.

Results of mathematical simulation of the influence of the swirling of a flow of an equilibrially dissociating heattransfer agent (nitrogen tetroxide) in a tube on the heat transfer and the chemical reaction in it are presented. It is shown that an increase in the intensity of swirling of such a flow in a tube increases the rate of heat exchange in it, with the result that the Nusselt number of the flow increases. In this case, the heat transfer in the flow depends not only on the integral intensity of its swirling but also on the method of organization of the flow swirling. It was established that, in the case of active action of the centrifugal forces on this flow, the turbulent disturbances arising in it cause its heat-transfer coefficient to increase, and, in the case of conservative action of the centrifugal forces on the flow, its heat transfer coefficient decreases. It is shown that the rate of heat exchange in the indicated flow can be controlled by changing the tangential component of the velocity of the flow along the radius of the tube. [ABSTRACT FROM AUTHOR]