Open Access2D Numerical Study of Heat Transfer Enhancement Using Fish-Tail Locomotion Vortex Generators
Author(s) -
Ahmed Hashim Yousif,
Hakim T. Kadhim,
Kadhim K. Idan AlChlaihawi
Publication year - 2021
Publication title -
mathematical modelling and engineering problems/mathematical modelling of engineering problems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.26
H-Index - 11
eISSN - 2369-0747
pISSN - 2369-0739
DOI - 10.18280/mmep.080307
Subject(s) - heat transfer , mechanics , heat transfer enhancement , reynolds number , vortex , vortex generator , materials science , flow (mathematics) , fish <actinopterygii> , thermodynamics , heat transfer coefficient , physics , turbulence , fishery , biology
In this paper, a numerical simulation is performed to study the effect of two types of concave vortex generators (VGs), arranged as fish-tail locomotion in a rectangular channel. The heat transfer and fluid flow characteristics with and without VGs are examined over the Reynolds number range 200≤Re≤2200.The two proposed types of the VGs are selected based on the speed of the fish movement which is arranged in different distances between them (d/H=0.6, 1, 1.3). The results show that the use of VGs can significantly enhance the heat transfer rate, but also increases the friction factor. The heat transfer performance is enhanced by (4-21.1%) reaching the maximum value by using the first type of the VGs at (d/H=1.3) due to better mixing of secondary flow and the new arrangement of the VGs which lead to decreasing the friction factor with an easy flow of fluid.