Numerical Simulation and Optimization on Air-Cooled Unit with Swirl Flow

The numerical simulation of conventional air-cooled unit and a new air-cooled one in which the incoming air is swirled by adding a swirler under the different angles of vane in the swirler has been made by employing actual data of Longshan power plant based on FLUENT software. Flow fields of the two kinds of units are obtained and compared. The most appropriate angle of vane in the swirler for heat transfer is found out. Optimums of heat load and heat transfer area are obtained and validated eventually by changing the head load and heat transfer area in the numerical simulation.