Abstract
This paper presents numerical study on heat transfer enhancement due to the combination of rectangular winglet pair with V-dimples in an array-type arrangement. Array of rectangular winglet pairs results in heat transfer enhancement, however, at a cost of significant pressure drop, resulting in reduced thermal-hydraulic performance (THP). On the other hand, dimples are associated with lower heat transfer enhancement levels at relatively lower pumping power penalty. To this end, a combination of rectangular winglet pair and V-shaped dimples has been studied in this paper, where the arrangements were intended to achieve enhanced thermal-hydraulic performance. Three different configurations, namely, rectangular winglet pair, rectangular winglet pair with one V-dimple between two consecutive winglets, and rectangular winglet pair with two V-dimples packed in a pitch, are studied here. The variation of heat transfer enhancement, pressure drop gain, and THP with respect to winglet-to-winglet (S) spacing variation for rectangular winglet pair and rectangular winglet pair with one V-dimple configuration is presented at a Reynolds number of 25,000. The THP of the rectangular winglet pair configuration decreases up to S/H equal to 2.5 and then increases (H: channel height). For rectangular winglet pair with one V-dimple, three values of winglet-to-dimple (P) spacings are analyzed. For fixed S/H, the highest P/H configuration provided highest heat transfer enhancement and THP. Among the three configurations studied, rectangular winglet pair with two V-dimples resulted in the highest thermal-hydraulic performance.
Issue Section:
Research Papers
References
1.
Fiebig
, M.
, Kallweit
, P.
, Mitra
, N.
, and Tiggelbeck
, S.
, 1991
, “Heat Transfer Enhancement and Drag by Longitudinal Vortex Generators in Channel Flow
,” Exp. Therm. Fluid Sci.
, 4
(1
), pp. 103
–114
. 2.
Eibeck
, P. A.
, and Eaton
, J. K.
, 1987
, “Heat Transfer Effects of a Longitudinal Vortex Embedded in a Turbulent Boundary Layer
,” ASME J. Heat Transfer
, 109
(1
), pp. 16
–24
. 3.
Gentry
, M. C.
, and Jacobi
, A. M.
, 1997
, “Heat Transfer Enhancement by Delta-Wing Vortex Generators on a Flat Plate: Vortex Interactions With the Boundary Layer
,” Exp. Therm. Fluid Sci.
, 14
(3
), pp. 231
–242
. 4.
Fiebig
, M.
, 1998
, “Vortices, Generators and Heat Transfer
,” Chem. Eng. Res. Des.
, 76
(2
), pp. 108
–123
. 5.
Wu
, J. M.
, and Tao
, W. Q.
, 2008
, “Numerical Study on Laminar Convection Heat Transfer in a Channel With Longitudinal Vortex Generator. Part B: Parametric Study of Major Influence Factors
,” Int. J. Heat Mass Transfer
, 51
(13–14
), pp. 3683
–3692
. 6.
Wu
, J. M.
, and Tao
, W. Q.
, 2008
, “Numerical Study on Laminar Convection Heat Transfer in a Rectangular Channel With Longitudinal Vortex Generator. Part A: Verification of Field Synergy Principle
,” Int. J. Heat Mass Transfer
, 51
(5–6
), pp. 1179
–1191
. 7.
Bjerg
, A.
, Christoffersen
, K.
, Sørensen
, H.
, and Hærvig
, J.
, 2019
, “Flow Structures and Heat Transfer in Repeating Arrangements of Staggered Rectangular Winglet Pairs by Large Eddy Simulations: Effect of Winglet Height and Longitudinal Pitch Distance
,” Int. J. Heat Mass Transfer
, 131
, pp. 654
–663
. 8.
Tiggelbeck
, S.
, Mitra
, N.
, and Fiebig
, M.
, 1992
, “Flow Structure and Heat Transfer in a Channel With Multiple Longitudinal Vortex Generators
,” Exp. Therm. Fluid Sci.
, 5
(4
), pp. 425
–436
. 9.
Zhu
, J. X.
, Mitra
, N. K.
, and Fiebig
, M.
, 1993
, “Effects of Longitudinal Vortex Generators on Heat Transfer and Flow Loss in Turbulent Channel Flows
,” Int. J. Heat Mass Transfer
, 36
(9
), pp. 2339
–2347
. 10.
Zhu
, J. X.
, Fiebig
, M.
, and Mitra
, N. K.
, 1995
, “Numerical Investigation of Turbulent Flows and Heat Transfer in a Rib-Roughened Channel With Longitudinal Vortex Generators
,” Int. J. Heat Mass Transfer
, 38
(3
), pp. 495
–501
. 11.
Kotcioglu
, İ.
, Ayhan
, T.
, Olgun
, H.
, and Ayhan
, B.
, 1998
, “Heat Transfer and Flow Structure in a Rectangular Channel With Wing-Type Vortex Generator
,” Turkish J. Eng. Environ. Sci.
, 22
(3
), pp. 185
–196
.12.
Tian
, L. T.
, He
, Y. L.
, Lei
, Y. G.
, and Tao
, W. Q.
, 2009
, “Numerical Study of Fluid Flow and Heat Transfer in a Flat-Plate Channel With Longitudinal Vortex Generators by Applying Field Synergy Principle Analysis
,” Int. Commun. Heat Mass Transfer
, 36
(2
), pp. 111
–120
. 13.
Awais
, M.
, and Bhuiyan
, A. A.
, 2018
, “Heat Transfer Enhancement Using Different Types of Vortex Generators (VGs): A Review on Experimental and Numerical Activities
,” Therm. Sci. Eng. Prog.
, 5
, pp. 524
–545
. 14.
Zhou
, G.
, and Feng
, Z.
, 2014
, “Experimental Investigations of Heat Transfer Enhancement by Plane and Curved Winglet Type Vortex Generators With Punched Holes
,” Int. J. Therm. Sci.
, 78
, pp. 26
–35
. 15.
Min
, C.
, Qi
, C.
, Kong
, X.
, and Dong
, J.
, 2010
, “Experimental Study of Rectangular Channel With Modified Rectangular Longitudinal Vortex Generators
,” Int. J. Heat Mass Transfer
, 53
(15–16
), pp. 3023
–3029
. 16.
Promvonge
, P.
, Suwannapan
, S.
, Pimsarn
, M.
, and Thianpong
, C.
, 2014
, “Experimental Study on Heat Transfer in Square Duct With Combined Twisted-Tape and Winglet Vortex Generators
,” Int. Commun. Heat Mass Transfer
, 59
, pp. 158
–165
. 17.
Luo
, L.
, Wen
, F.
, Wang
, L.
, Sundén
, B.
, and Wang
, S.
, 2017
, “On the Solar Receiver Thermal Enhancement by Using the Dimple Combined With Delta Winglet Vortex Generator
,” Appl. Therm. Eng.
, 111
, pp. 586
–598
. 18.
Chompookham
, T.
, Thianpong
, C.
, Kwankaomeng
, S.
, and Promvonge
, P.
, 2010
, “Heat Transfer Augmentation in a Wedge-Ribbed Channel Using Winglet Vortex Generators
,” Int. Commun. Heat Mass Transfer
, 37
(2
), pp. 163
–169
. 19.
Depaiwa
, N.
, Chompookham
, T.
, and Promvonge
, P.
, 2010
, “Thermal Enhancement in a Solar Air Heater Channel Using Rectangular Winglet Vortex Generators
,” Proceedings of the International Conference on Energy and Sustainable Development: Issues and Strategies (ESD)
, Chiang Mai, Thailand
, June 2–4
, IEEE, pp. 1
–7
.20.
Ligrani
, P. M.
, Harrison
, J. L.
, Mahmmod
, G. I.
, and Hill
, M. L.
, 2001
, “Flow Structure Due to Dimple Depressions on a Channel Surface
,” Phys. Fluids
, 13
(11
), pp. 3442
–3451
. 21.
Ligrani
, P. M.
, Mahmood
, G. I.
, Harrison
, J. L.
, Clayton
, C. M.
, and Nelson
, D. L.
, 2001
, “Flow Structure and Local Nusselt Number Variations in a Channel With Dimples and Protrusions on Opposite Walls
,” Int. J. Heat Mass Transfer
, 44
(23
), pp. 4413
–4425
. 22.
Mahmood
, G. I.
, Hill
, M. L.
, Nelson
, D. L.
, Ligrani
, P. M.
, Moon
, H. K.
, and Glezer
, B.
, 2001
, “Local Heat Transfer and Flow Structure on and Above a Dimpled Surface in a Channel
,” ASME J. Turbomach.
, 123
(1
), pp. 115
–123
. 23.
Mahmood
, G. I.
, Sabbagh
, M. Z.
, and Ligrani
, P. M.
, 2001
, “Heat Transfer in a Channel With Dimples and Protrusions on Opposite Walls
,” J. Thermophys. Heat Transfer
, 15
(3
), pp. 275
–283
. 24.
Chyu
, M. K.
, Yu
, Y.
, Ding
, H.
, Downs
, J. P.
, and Soechting
, F. O.
, 1997
, “Concavity Enhanced Heat Transfer in an Internal Cooling Passage
,” ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
, Orlando, FL
, June 2–5
, American Society of Mechanical Engineers
, p. V003T09A080
.25.
Singh
, P.
, and Ekkad
, S. V.
, 2018
, “Detailed Heat Transfer Measurements of Jet Impingement on Dimpled Target Surface Under Rotation
,” ASME J. Therm. Sci. Eng. Appl.
, 10
(3
), p. 031006
. 26.
Ekkad
, S. V.
, and Han
, J. C.
, 1996
, “Heat Transfer Inside and Downstream of Cavities Using Transient Liquid Crystal Method
,” J. Thermophys. Heat Transfer
, 10
(3
), pp. 511
–516
. 27.
Moon
, H. K.
, O’connell
, T.
, and Glezer
, B.
, 1999
, “Channel Height Effect on Heat Transfer and Friction in a Dimpled Passage
,” ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition
, Indianapolis, IN
, June 7–10
, American Society of Mechanical Engineers
, p. V003T01A043
.28.
Turnow
, J.
, Kornev
, N.
, Zhdanov
, V.
, and Hassel
, E.
, 2012
, “Flow Structures and Heat Transfer on Dimples in a Staggered Arrangement
,” Int. J. Heat Fluid Flow
, 35
, pp. 168
–175
. 29.
Burgess
, N. K.
, and Ligrani
, P. M.
, 2005
, “Effects of Dimple Depth on Channel Nusselt Numbers and Friction Factors
,” ASME J. Heat Transfer
, 127
(8
), pp. 839
–847
. 30.
Xie
, G.
, Liu
, J.
, Ligrani
, P. M.
, and Zhang
, W.
, 2013
, “Numerical Predictions of Heat Transfer and Flow Structure in a Square Cross-Section Channel With Various Non-Spherical Indentation Dimples
,” Numer. Heat Transfer A: Appl.
, 64
(3
), pp. 187
–215
. 31.
Liu
, J.
, Song
, Y.
, Xie
, G.
, and Sunden
, B.
, 2015
, “Numerical Modeling Flow and Heat Transfer in Dimpled Cooling Channels With Secondary Hemispherical Protrusions
,” Energy
, 79
, pp. 1
–19
. 32.
Xie
, Y.
, Qu
, H.
, and Zhang
, D.
, 2015
, “Numerical Investigation of Flow and Heat Transfer in Rectangular Channel With Teardrop Dimple/Protrusion
,” Int. J. Heat Mass Transfer
, 84
, pp. 486
–496
. 33.
Rao
, Y.
, Li
, B.
, and Feng
, Y.
, 2015
, “Heat Transfer of Turbulent Flow Over Surfaces With Spherical Dimples and Teardrop Dimples
,” Exp. Therm. Fluid. Sci.
, 61
, pp. 201
–209
. 34.
Rao
, Y.
, Feng
, Y.
, Li
, B.
, and Weigand
, B.
, 2015
, “Experimental and Numerical Study of Heat Transfer and Flow Friction in Channels With Dimples of Different Shapes
,” ASME J. Heat Transfer
, 137
(3
), p. 031901
. 35.
Moon
, S. W.
, and Lau
, S. C.
, 2002
, “Turbulent Heat Transfer Measurements on a Wall With Concave and Cylindrical Dimples in a Square Channel
,” ASME Turbo Expo 2002: Power for Land, Sea, and Air
, Amsterdam, The Netherlands
, June 3–6
, American Society of Mechanical Engineers
, pp. 459
–467
.36.
Xie
, G.
, and Sundén
, B.
, 2010
, “Numerical Predictions of Augmented Heat Transfer of an Internal Blade Tip-Wall by Hemispherical Dimples
,” Int. J. Heat Mass Transfer
, 53
(25–26
), pp. 5639
–5650
. 37.
Xie
, G.
, Sundén
, B.
, and Wang
, Q.
, 2011
, “Predictions of Enhanced Heat Transfer of an Internal Blade Tip-Wall With Hemispherical Dimples or Protrusions
,” ASME J. Turbomach.
, 133
(4
), p. 041005
. 38.
Xie
, G.
, Sundén
, B.
, and Zhang
, W.
, 2011
, “Comparisons of Pins/Dimples/Protrusions Cooling Concepts for a Turbine Blade Tip-Wall at High Reynolds Numbers
,” ASME J. Heat Transfer
, 133
(6
), p. 061902
. 39.
Singh
, P.
, Pandit
, J.
, and Ekkad
, S. V.
, 2017
, “Characterization of Heat Transfer Enhancement and Frictional Losses in a Two-Pass Square Duct Featuring Unique Combinations of Rib Turbulators and Cylindrical Dimples
,” Int. J. Heat Mass Transfer
, 106
, pp. 629
–647
. 40.
Singh
, P.
, and Ekkad
, S.
, 2017
, “Experimental Study of Heat Transfer Augmentation in a Two-Pass Channel Featuring V-Shaped Ribs and Cylindrical Dimples
,” Appl. Therm. Eng.
, 116
, pp. 205
–216
. 41.
Rao
, Y.
, Wan
, C.
, and Xu
, Y.
, 2012
, “An Experimental Study of Pressure Loss and Heat Transfer in the Pin Fin-Dimple Channels With Various Dimple Depths
,” Int. J. Heat Mass Transfer
, 55
(23–24
), pp. 6723
–6733
. 42.
Rao
, Y.
, Xu
, Y.
, and Wan
, C.
, 2012
, “An Experimental and Numerical Study of Flow and Heat Transfer in Channels With Pin Fin-Dimple and Pin Fin Arrays
,” Exp. Therm. Fluid. Sci.
, 38
, pp. 237
–247
. 43.
Rao
, Y.
, Xu
, Y.
, and Wan
, C.
, 2012
, “A Numerical Study of the Flow and Heat Transfer in the Pin Fin-Dimple Channels With Various Dimple Depths
,” ASME J. Heat Transfer
, 134
(7
), p. 071902
. 44.
Jordan
, C. N.
, and Wright
, L. M.
, 2011
, “Heat Transfer Enhancement in a Rectangular (AR = 3:1) Channel With V-Shaped Dimples
,” ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
, Vancouver, British Columbia, Canada
, June 6–10
, American Society of Mechanical Engineers
, pp. 1505
–1516
.45.
Ranaware
, M. A. G.
, and Bhosale
, M. S.
, 2016
, “A Study of Heat Transfer Enhancement Using V Shaped Dimples on a Flat Plate With Experimentation & CFD
,” GRD J. Global Res. Dev. J. Eng.
, 1
(4
), pp. 104
–110
.46.
Naik
, H.
, Harikrishnan
, S.
, and Tiwari
, S.
, 2018
, “Numerical Investigations on Heat Transfer Characteristics of Curved Rectangular Winglet Placed in a Channel
,” Int. J. Therm. Sci.
, 129
, pp. 489
–503
. 47.
Zhou
, G.
, and Ye
, Q.
, 2012
, “Experimental Investigations of Thermal and Flow Characteristics of Curved Trapezoidal Winglet Type Vortex Generators
,” Appl. Therm. Eng.
, 37
, pp. 241
–248
. 48.
Saha
, P.
, Biswas
, G.
, and Sarkar
, S.
, 2014
, “Comparison of Winglet-Type Vortex Generators Periodically Deployed in a Plate-Fin Heat Exchanger—A Synergy Based Analysis
,” Int. J. Heat Mass Transfer
, 74
, pp. 292
–305
. Copyright © 2019 by ASME
You do not currently have access to this content.
