Numerical analysis of heat transfer and flow dynamics in a pipe with square extruded bluff cylinder inserts

Abstract

This paper presents the computational study of convective heat transfer enhancement and entropy generation performance by using bluff cylinder. A two-dimensional numerical simulation is executed successfully on thermo-hydraulic transport characteristics for a square extruded bluff cylinder placed inside duct. The test fluid, air (Pr 0.707), is used for the experiment. The turbulent SST scheme is engaged for the simulation. The simulation is accomplished with the aim to achieve an understanding of physical performance and activities of the thermo-fluidic flow inside the channel fitted with bluff body at 15D spacing from the inlet under constant temperature conditions at wall. The simulation is done to cover cross flow encompassing both laminar as well as turbulent flow regime in the range of Reynolds number (Re) up to 1×105 and inlet intensities from 5% to 40%. The effects of outlet temperature and Nusselt number is esteemed and considered. No ideal Re has been detected which could reduce the total entropy generation. It is highly promising to be executed in the practical relevance like power and energy industry.