Abstract
A numerical study has been conducted to clarify the flow and heat transfer characteristics of a cross-flow heat exchanger with drop-shaped tubes at zero angle of attack. A mathematical and numerical model in software package Ansys for numerical evaluation of heat transfer and flow field of a bundle of drop-shaped tubes, with taking into account the strain caused by different pressures inside and outside the tubes has been developed. The result of the numerical simulation indicates the superior thermal and hydrodynamics performance of the drop-shaped tube bundles over the circular tubes.
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