• EFFECT OF FIRST ORDER CHEMICAL REACTION IN A VERTICAL DOULBE PASSAGE CHANNEL

J. Prathap Kumar*, J. C. Umavathi, Deena Sunil Sharanappa

Abstract


This work is aimed at describing free convective heat and mass transfer in a vertical channel in the presence of chemical reaction. The considered channel is divided into two passages by means of a thin plane baffle. Each stream has its own pressure gradient and hence the velocity, temperature and concentration will be individual in each stream. After placing the baffle, the fluid in one of the passage is concentrated. The first order chemical reaction is used as an example of calculation to obtain the analytical solutions. The coupled non-linear ordinary differential equations governing the fluid motion is solved using regular perturbation method. The temperature and concentration fields are observed to be governed by complex interactions among dispersions and natural convection mechanisms. Results are drawn for varying physical parameters, such as ratio of Grashof number to Reynolds number, modified Grashof number to Reynolds number, Brinkman number, and chemical reaction parameter on the flow field at different positions of the baffle. It is found that the ratio of Grashof number to Reynolds number, modified Grashof number to Reynolds number, Brinkman number enhances the flow where as first order chemical reaction parameter suppresses the flow at all the baffle positions in both the streams.


Keywords


Baffle, first order chemical reaction, free convection, perturbation method

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