Heat transfer in a high vertical enclosure with fins attached to one of the side walls

A numerical model is developed of heat transfer in a high vertical narrow enclosure in the presence of fins on one of the isothermal side walls. The Navier–Stokes equations were solved numerically in two-dimensional formulation. It is demonstrated that the mean coefficient of heat transfer over the channel surface for adiabatic fins first increases with the number of fins to reach a maximum and then decreases by approximately $30\%$ compared to smooth walls. For heat-conducting fins, the enhancement of heat transfer may be as high as $200\%$ or more.