Abstract:
A numerical work has been conducted to examine laminar flow and heat transfer characteristics in a two-dimensional
isothermal-fluxed circular-duct fitted horizontal with finned tapes. The computations are based on the finite volume method with the
SIMPLE algorithm implemented. This paper reports the Computational Fluid Dynamics (CFD) modelling studies on heat transfer,
friction factor and thermal performance of a counter-flow heat exchanger equipped with two types of tube insert including fins. The
principle of heat transfer enhancement in the core flow of tube has been proposed to improve the temperature uniformity and heat
transfer enhancement in the boundary flow of tube. The studied the temperature profile and velocity profile was obtained by the fins
inserts with an inclined angle of 90°. The results have also revealed that the difference between the heat transfer rates obtained from
two models with fins and without fins. The CFD predicted results were used to explain the observed results in terms of swirl intensity.