MATHEMATICAL SIMULATION OF HEAT TRANSFER AND CHEMICAL REACTION IN A SWIRLING FLOW OF EQUILIBRIUM-DISSOCIATING GAS

Results of investigations of the heat transfer in the swirling turbulent fl ow of dinitrogen tetroxide in a cylindrical channel are presented. The equilibrium stage of the dissociation reaction N₂O₄ ⇄  2NO₂   was considered. It was established that the mass fraction of N₂O₄ in its swirling fl ow is smaller than that in the analogous forward fl ow at one and the same distance from the input cross section of the channel. In the case where the fl ow of dinitrogen tetroxide is strongly swirled, its intense heating in the zone of reverse fl ows near the channel inlet causes it to dissociate. It is shown that an increase in the swirling of a gas fl ow intensifi es the heat transfer in it with increase in its Nusselt number
   
Author:  O. V. Matvienko ,  P. S. Martynov
Keywords:  heat transfer, chemical reaction, dissociation, boundary layer, swirling fl ow, computational fl uid dynamics
Page:  428