VORTEX INTENSIFICATION OF HEAT TRANSFER IN CHANNELS AND PIPES WITH PERIODIC ELEMENTS OF DISCRETE ROUGHNESS

A complex numerical investigation of vortex intensifi cation of heat transfer in turbulent inhomogeneous medium fl ow in channels and pipes with periodic elements of discrete roughness has been carried out with the use of multiblock computational technologies, realized in a specialized package VP2/3, and of a modifi ed model of transfer of shear stresses. As roughness elements use was made of asperities and grooves of different geometries, with air and transformer oil used as a working medium. The infl uence of the geometrical parameters of the indicated channels and pipes as well as of the regime parameters of the fl ow in them on their thermal and hydraulic effi ciency has been analyzed in detail.
   
Author:  S. A. Isaev, A. D. Chornyi, Yu. V. Zhukova, A. A. Vysotskaya, and V. B. Kharchenko
Keywords:  vortex intensifi cation, turbulent fl ow, channels, pipes, discrete roughness
Page:  1509