Heat transfer characteristics of flow past a rectangular protruding body

mow over a protruding body is an attractive research field in thermal engin eering. In the present study, laminar flow over a protruding body is consid ered. Unsteady two-dimensional Navier-Strokes and energy equations are solv ed numerically using a control volume approach. The heat transfer character istics due to vortex shedding are examined in detail. The flow and heat tra nsfer characteristics are compared with their counterparts obtained from th e steady flow case. The entropy analysis is carried out and irreversibility generated because of fluid friction is computed. The relative heat transfe r and irreversibility ratios are introduced to compare the heat transfer pe rformance characteristics of unsteady and steady flow cases. It is found th at the relative heat transfer ratio attains higher value, whereas relative irreversibility ratio becomes less for unsteady flow as compared with that obtained for the steady flow case.