Heat transfer and resistance in pipe flow of dissociating dinitrogen tetroxide. Turbulent flow

The balance equations for the intensity of turbulent pulsations of temperature and composition of chemically reacting binary mixtures were used to investigate the effect of chemical nonequilibrium on the characteristics of turbulent heat and mass transfer in flows of the boundary-layer type. It is shown that in a flow of dissociating dinitrogen tetroxide at subcritical pressure gradient representations with the usual relations for the turbulent transfer coefficients can be used for the description of the turbulent heat and mass flows. A method of including the effect of pulsations of temperature and composition on the averaged rate of chemical transformations in turbulent flows is described.