Numerical simulation of heat transfer over a flat plate with a triangular vortex generator

Bayareh, Morteza; Nourbakhsh, Amireh; Khadivar, Mohammad Erfan

doi:10.18280/ijht.360443

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…Vortex generator augments film cooling by the creation of secondary vortices [17]. Flow and heat transfer characteristics are enhanced by implementing vortex generators [18][19][20][21][22]. The results of reference 18 revealed that the longitudinal vortices have an important effect on the heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Influence of Vortex Generator on Gas Turbine Blade Cooling

Halder¹,

Almeshaal²,

Haldar³

et al. 2023

IJHT

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The current numerical study recommends using a vortex generator (VG) to lessen the impacts of a counter-rotating vortex pair (CRVP). For this study, the delta winglet pair (DWP) arrangement with common-flow-down (CFD) is recommended. The blowing ratios for the jet to cross flows are preserved at unity, while the Reynolds number is kept at 17000 based on free stream velocity and film cooling hole dimension. The numerical analysis is carried out using the FLUENT commercial code and the k-omega SST turbulence model. The effect of the length and height of the vortex generator on the features of film cooling effectiveness are investigated. The consequences of using multiple VG and impact of their different downstream locations on cooling effectiveness, has been discovered. The influence of changing turbulence intensity (TI=5, 10, 15) and Reynolds number (Re=15000, 17000, 20000) on cooling efficacy was studied. The Vortex generator, which is placed downstream of the circular film cooling hole, appears to be more successful. With the increment of TI and Reynolds number, film cooling efficiency decreases.

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Section: Introductionmentioning

confidence: 99%

Influence of Vortex Generator on Gas Turbine Blade Cooling

Halder¹,

Almeshaal²,

Haldar³

et al. 2023

IJHT

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“…As a recent work about the convection enhancement by the passive method, Bayareh et al [6] simulated the heat transfer over a flat plate with a triangular vortex generator. In that work, the set of governing equations was solved by the CFD technique to determine the velocity and temperature fields inside the lamin ar convection airflow under a vortex generator.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in Rejected Heat from Heat Sinks Using High Flexible Winglets with Large Deformation and Low Blockage Effect

Nassab

2022

IJEE

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“…The results showed that the maximum Nusselt number is achieved when the angle of attack is 29. Bayareh et al [17] studied the effect of angle of a triangular vortex generator for laminar flow on enhancing heat transfer in a channel. The authors indicated that the heat transfer performance is considerably affected by increasing the angle from 30° to 90°.…”

Section: Introductionmentioning

confidence: 99%

2D Numerical Study of Heat Transfer Enhancement Using Fish-Tail Locomotion Vortex Generators

Yousif¹,

Kadhim²,

Al-Chlaihawi³

2021

MMEP

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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.

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Numerical simulation of heat transfer over a flat plate with a triangular vortex generator

Cited by 6 publications

References 25 publications

Influence of Vortex Generator on Gas Turbine Blade Cooling

Influence of Vortex Generator on Gas Turbine Blade Cooling

Enhancement in Rejected Heat from Heat Sinks Using High Flexible Winglets with Large Deformation and Low Blockage Effect

2D Numerical Study of Heat Transfer Enhancement Using Fish-Tail Locomotion Vortex Generators

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