| Summary: | This paper examines the three dimensional Eyring-Powell fluid flow over an exponentially stretching surface with heterogeneous-homogeneous chemical reactions. A new model of heat flux suggested by Cattaneo and Christov is employed to study the properties of relaxation time. From the present analysis we observe that there is an inverse relationship between temperature and thermal relaxation time. The temperature in Cattaneo-Christov heat flux model is lesser than the classical Fourier's model. In this paper the three dimensional Cattaneo-Christov heat flux model over an exponentially stretching surface is calculated first time in the literature. For negative values of temperature exponent, temperature profile firstly intensifies to its most extreme esteem and after that gradually declines to zero, which shows the occurrence of phenomenon (SGH) “Sparrow-Gregg hill”. Also, for higher values of strength of reaction parameters, the concentration profile decreases. Keywords: Three dimensional flow, Eyring-Powell fluid, Cattaneo-Christov heat flux model, Heterogeneous-homogeneous reactions, Exponentially stretching surface
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