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This study investigates the influence of heat generating/absorbing fluid on fully developed mixed convection flow in a vertical micro-concentric-annulus (MCA) taking into account the velocity slip and temperature jump at the outer surface of inner cylinder and inner surface of outer cylinder. Exact solution of momentum and energy equations is derived separately in terms of Bessel’s function of first and second kind for heat generating fluid and modified Bessel’s function of first and second kind for heat absorbing fluid. The solutions obtained are graphically represented and the effects of governing parameters on flow formation and heat transfer aspects are investigated in detail. During the course of numerical computations, it is found that increase in heat generation parameter enhanced the temperature and velocity of the fluid but reduced the rate of heat transfer at the outer surface of the inner cylinder while the reverse trend is observed for heat absorbing fluid

Steady fully developed mixed convection flow in a vertical micro-concentric-annulus with heat generating/absorbing fluid: An exact solution