Effects of different orientations of winglet arrays on the performance of plate-fin heat exchangers

Sinha, Anupam; Raman, K. Ashoke; Chattopadhyay, Himadri; Biswas, Gautam

doi:10.1016/j.ijheatmasstransfer.2012.10.034

Cited by 89 publications

(21 citation statements)

References 19 publications

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“…Sinha et al [17] simulated the enhancement of heat transfer using a plate-fin heat exchanger with two rows of winglet type Greek symbols b angle of attack of vortex generator m kinematic viscosity (m 2 /s) vortex generators. Their results indicated that of various arrangements of vortex generators, the common-flow-up in series (CFU-CFU) configuration was the best in terms of heat transfer and quality factor.…”

Section: Introductionmentioning

confidence: 99%

Enhancing heat transfer in a plate-fin heat sink using delta winglet vortex generators

Li¹,

Chen²,

Chao³

et al. 2013

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Enhancing heat transfer in a plate-fin heat sink using delta winglet vortex generators

Li¹,

Chen²,

Chao³

et al. 2013

International Journal of Heat and Mass Transfer

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“…It uses an Eulerian finite-difference formulation with pressure and velocity as the primary dependent variables [108]. Biswas et al [64,67,70], Deb et al [69], Sinha et al [94] and Saha et al [99] modified the MAC algorithm to solve the governing equations of fluid flow and heat transfer. SOLA algorithm is a finite-difference technique to solve the Navier-Stokes equations of an incompressible fluid, which is also based on the MAC method and employed by Fiebig et al [62] and Zhu et al [65,66] to obtain the velocity structure and temperature field on heat transfer surfaces.…”

Section: -9700mentioning

confidence: 99%

A Review of Airside Heat Transfer Augmentation with Vortex Generators on Heat Transfer Surface

Chai

Tassou

2018

Energies

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Heat exchanger performance can be improved via the introduction of vortex generators to the airside surface, based on the mechanism that the generated longitudinal vortices can disrupt the boundary layer growth, increase the turbulence intensity and produce secondary fluid flows over the heat transfer surfaces. The key objective of this paper is to provide a critical overview of published works relevant to such heat transfer surfaces. Different types of vortex generator are presented, and key experimental techniques and numerical methodologies are summarized. Flow phenomena associated with vortex generators embedded, attached, punched or mounted on heat transfer surfaces are investigated, and the thermohydraulic performance (heat transfer and pressure drop) of four different heat exchangers (flat plate, finned circular-tube, finned flat-tube and finned oval-tube) with various vortex-generator geometries, is discussed for different operating conditions. Furthermore, the thermohydraulic performance of heat transfer surfaces with recently proposed vortex generators is outlined and suggestions on using vortex generators for airside heat transfer augmentation are presented. In general, the airside heat transfer surface performance can be substantially enhanced by vortex generators, but their impact can also be significantly influenced by many parameters, such as Reynolds number, tube geometry (shape, diameter, pitch, inline/staggered configuration), fin type (plane/wavy/composite, with or without punched holes), and vortex-generator geometry (shape, length, height, pitch, attack angle, aspect ratio, and configuration). The finned flat-tube and finned oval-tube heat exchangers with recently proposed vortex generators usually show better thermohydraulic performance than finned circular tube heat exchangers. Current heat exchanger optimization approaches are usually based on the thermohydraulic performance alone. However, to ensure quick returns on investment, heat exchangers with complex geometries and surface vortex generators, should be optimized using cost-based objective functions that consider the thermohydraulic performance alongside capital cost, running cost of the system as well as safety and compliance with relevant international standards for different applications.

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“…Sinha et al [23] provided a numerical result pertaining to heat transfer enhancement of a plate-fin heat exchanger using two rows of WVGs with five different strategies on placing the WVGs.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Heat transfer augmentation in a circular tube with winglet vortex generators

Chokphoemphun

Pimsarn

Thianpong

et al. 2015

Chinese Journal of Chemical Engineering

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Effects of different orientations of winglet arrays on the performance of plate-fin heat exchangers

Cited by 89 publications

References 19 publications

Enhancing heat transfer in a plate-fin heat sink using delta winglet vortex generators

Enhancing heat transfer in a plate-fin heat sink using delta winglet vortex generators

A Review of Airside Heat Transfer Augmentation with Vortex Generators on Heat Transfer Surface

Heat transfer augmentation in a circular tube with winglet vortex generators

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