3d simulation of exhaust gases dynamics inside a single-layer flared chimney tower: effects of the orifice position

Flared chimney power plant is a new technology for electricity generation. flue gases contain significant amount of thermal and kinetic energy. the main goals of this comprehensive numerical research are to design and optimize geometrical parameters of single-layer fcpp tower and its combustion chamber. to this end, effects of the orifice postion, chimney height, canopy horizontal angel, canopy shape, fresh air inlet height, and flares position effects are studied. in this paper part of results related to the position of the orifice is presented. the aim is to predict a suitable height for the orifice in order to increase the efficiency of the tower and reduce the height. commercial computational fluid dynamics software was used to perform the calculations. results indicated that the power generation is decreased with elevating the orifice position, but the span of the high-velocity area is increased inspite of the reduction in the maximum velocity magnitude reduction.