Intensification of Heat Exchange in Laminar Vortex Air Flow in a Narrow Channel with a Row of Inclined Oval Trenches

Abstract

With the use of multiblock computational technologies, the laminar flow and heat exchange in the modules arranged in a row at regular intervals in a plane-parallel channel, at the centers of which oval trenches oriented at an angle of 45o to the flow are positioned, were calculated at Re = 103. On the basis of the calculation data obtained, it was established that an increase in the maximum velocity of the flow in such a channel by one and a half times leads to the intensification of the heat exchange in it and an increase in the heat transfer from the surface region on its wall with an inclined trench by 80% with an increase in the hydraulic losses by 25%, as compared to those of an analogous smooth channel.