OICC Press International Journal of Mathematical Modelling & Computations 2228-6233 2 3 2016 06 21 UNSTEADY CONVECTIVE DIFFUSION IN A HERSCHEL–BULKLEY FLUID IN A CONDUIT WITH INTERPHASE MASS TRANSFER 159 179 EN G. Sarojamma Department of Applied Mathematics, Sri Padmavati Mahila Visvavidyalayam, Tirupati, A.P., India India B. Ramana Dept. of Applied Mathematics Sri Padmavati Mahila Visvavisyalayam Tirupati - 517502 Andhra Pradesh INDIA India Journal Article 2016 06 21 The combined effect of non-Newtonian rheology and irreversible boundary reaction on dispersion in a Herschel-Bulkley fluid through a conduit (pipe/channel) is studied by using generalized dispersion model. The study explains the development of dispersive transport following the injection of a tracer in terms of three effective transport coefficients namely exchange, convective and dispersion coefficients. It is found that the exchange coefficient does not depend on yield stress and power law index but the convective and dispersion coefficients depend on yield stress and power law index.