entropy generation due to unsteady hydromagnetic couette flow and heat transfer with asymmetric convective cooling in a rotating system

entropy generation in an unsteady hydromagnetic couette flow of a viscous incompressible electrically conducting fluid between two infinite horizontal parallel plates in a rotating system have been analyzed. both the lower and upper plates of the channel are subjected to asymmetric convective heat exchange with the ambient following the newton's law of cooling. a numerical solution for governing equations is developed. the influences of the pertinent parameters on the fluid velocity components, temperature, entropy generation and bejan number are discussed graphically.