Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

PDF(16629 KB)
PDF(16629 KB)
Front. Energy ›› 2022, Vol. 16 ›› Issue (4) : 661-682. DOI: 10.1007/s11708-020-0713-0
RESEARCH ARTICLE

Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Author information +
History +

Abstract

Wind-lens turbines (WLTs) exhibit the prospect of a higher output power and more suitability for urban areas in comparison to bare wind turbines. The wind-lens typically comprises a diffuser shroud coupled with a flange appended to the exit periphery of the shroud. Wind-lenses can boost the velocity of the incoming wind through the turbine rotor owing to the creation of a low-pressure zone downstream the flanged diffuser. In this paper, the aerodynamic performance of the wind-lens is computationally assessed using high-fidelity transient CFD simulations for shrouds with different profiles, aiming to assess the effect of change of some design parameters such as length, area ratio and flange height of the diffuser shroud on the power augmentation. The power coefficient (Cp) is calculated by solving the URANS equations with the aid of the SST k–ω model. Furthermore, comparisons with experimental data for validation are accomplished to prove that the proposed methodology could be able to precisely predict the aerodynamic behavior of the wind-lens turbine. The results affirm that wind-lens with cycloidal profile yield an augmentation of about 58% increase in power coefficient compared to bare wind turbine of the same rotor swept-area. It is also emphasized that diffusers (cycloid type) of small length could achieve a twice increase in power coefficient while maintaining large flange heights.

Graphical abstract

Keywords

shroud / diffuser-augmented wind turbine (DAWT) / Betz limit / aerodynamics / computational fluid dynamics (CFD)

Cite this article

Download citation ▾
Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED. Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations. Front. Energy, 2022, 16(4): 661‒682 https://doi.org/10.1007/s11708-020-0713-0

References

[1]
Inoue M, Sakurai A, Ohya Y. A simple theory of wind turbine with brimmed diffuser. Turbomachinery, 2002, 30(8): 497–502 (in Japanese)
[2]
Ohya Y, Karasudani T. A shrouded wind turbine generating high output power with wind-lens technology. Energies, 2010, 3(4): 634–649
CrossRef Google scholar
[3]
Abe K, Nishida M, Sakurai A, Experimental and numerical investigations of flow fields behind a small wind turbine with a flanged diffuser. Journal of Wind Engineering and Industrial Aerodynamics, 2005, 93(12): 951–970
CrossRef Google scholar
[4]
Ohya Y, Karasudani T, Sakurai A, Development of a high-performance wind turbine equipped with a brimmed diffuser shroud. Transactions of the Japan Society for Aeronautical and Space Sciences, 2006, 49(163): 18–24
CrossRef Google scholar
[5]
Abe K, Kihara H, Sakurai A, An experimental study of tip-vortex structures behind a small wind turbine with a flanged diffuser. Wind and Structures, 2006, 9(5): 413–417
CrossRef Google scholar
[6]
Ohya Y, Karasudani T, Sakurai A, Development of a shrouded wind turbine with a flanged diffuser. Journal of Wind Engineering and Industrial Aerodynamics, 2008, 96(5): 524–539
CrossRef Google scholar
[7]
Toshimitsu K, Nishikawa K, Haruki W, PIV measurements of flows around the wind turbines with a flanged-diffuser shroud. Journal of Thermal Science, 2008, 17(4): 375–380
CrossRef Google scholar
[8]
Abe K, Ohya Y. An investigation of flow fields around flanged diffusers using CFD. Journal of Wind Engineering and Industrial Aerodynamics, 2004, 92(3–4): 315–330
CrossRef Google scholar
[9]
Takahashi S, Hata Y, Ohya Y, Behavior of the blade tip vortices of a wind turbine equipped with a brimmed-diffuser shroud. Energies, 2012, 5(12): 5229–5242
CrossRef Google scholar
[10]
Ohya Y, Uchida T, Karasudani T, Numerical studies of flows around a wind turbine equipped with flanged-diffuser shroud by using an actuator-disc model. Wind Engineering, 2012, 36(4): 455–472
CrossRef Google scholar
[11]
Lilley G M, Rainbird W J. A preliminary report on the design and performance of a ducted windmill. Cranfield: The College of Aeronautics, 1956
[12]
Gilbert B L, Oman R A, Foreman K M. Fluid dynamics of diffuser-augmented wind turbines. Journal of Energy, 1978, 2(6): 368–374
CrossRef Google scholar
[13]
Gilbert B L, Foreman K M. Experiments with a diffuser-augmented model wind turbine. Journal of Energy Resources Technology, 1983, 105(1): 46–53
CrossRef Google scholar
[14]
Igra O. Research and development for shrouded wind turbines. Energy Conversion and Management, 1981, 21(1): 13–48
CrossRef Google scholar
[15]
Phillips D G, Richards P J, Flay R G J. Diffuser development for a diffuser augmented wind turbines using computational fluid dynamics. Technical Report, University of Auckland, 2005
[16]
Phillips D G, Flay R G J, Nash T A. Aerodynamic analysis and monitoring of the Vortec 7 diffuser-augmented wind turbine. Transactions of the Institution of Professional Engineers of New Zealand: Electrical/Mechanical/Chemical Engineering Section, 1999, 26(1): 13–19
[17]
Bet F, Grassmann H. Upgrading conventional wind turbines. Renewable Energy, 2003, 28(1): 71–78
CrossRef Google scholar
[18]
Fletcher C A J. Computational analysis of diffuser-augmented wind turbines. Energy Conversion and Management, 1981, 21(3): 175–183
CrossRef Google scholar
[19]
Loeffler A L Jr, Vanderbilt D. Inviscid flow through wide-angle diffuser with actuator disk. AIAA Journal, 1978, 16(10): 1111–1112
CrossRef Google scholar
[20]
Loeffler A L Jr. Flow field analysis and performance of wind turbines employing slotted diffusers. Journal of Solar Energy Engineering, 1981, 103(1): 17–22
CrossRef Google scholar
[21]
Georgalas C G, Koras A D. Calculations of wind-flow through thin annular augmentors of very high aspect ratio. Wind Engineering, 1987, 11(4): 225–233
[22]
Hansen M, Sørensen N, Flay R G J. Effect of placing a diffuser around a wind turbine. Wind Energy (Chichester, England), 2000, 3(4): 207–213
CrossRef Google scholar
[23]
Phillips D. An Investigation on diffuser augmented wind turbine design. Dissertation for the Doctoral Degree. Auckland: University of Auckland, 2003
[24]
Watson S J, Infield D G, Barton S J, Modelling of the performance of a building-mounted ducted wind turbine. Journal of Physics: Conference Series, 2007, 75: 012001
CrossRef Google scholar
[25]
Nasution A, Purwanto D W. Optimized curvature interior profile for diffuser augmented wind turbine (DAWT) to increase its energy-conversion performance. In: Proceedings of 2011 IEEE Conference on Clean Energy and Technology (CET), Kuala Lumpur, IEEE. 2011, 315–320
[26]
Gomis L L. Effect of diffuser augmented micro wind turbines features on device performance. Dissertation for the Master Degree. Wollongong: University of Wollongong, 2011
[27]
Hjort S, Larsen H. A multi-element diffuser augmented wind turbine. Energies, 2014, 7(5): 3256–3281
CrossRef Google scholar
[28]
Oka N, Furukawa M, Yamada K, Aerodynamic design optimization of wind-lens turbine. In: ASME 2013 Fluids Engineering Division Summer Meeting, 2013
CrossRef Google scholar
[29]
Hu J F, Wang W X. Upgrading a shrouded wind turbine with a self-adaptive flanged diffuser. Energies, 2015, 8(6): 5319–5337
CrossRef Google scholar
[30]
Liu J, Song M, Chen K, An optimization methodology for wind lens profile using computational fluid dynamics simulation. Energy, 2016, 109: 602–611
CrossRef Google scholar
[31]
Khamlaj T A, Rumpfkeil M P. Analysis and optimization of ducted wind turbines. Energy, 2018, 162: 1234–1252
CrossRef Google scholar
[32]
Thé J, Yu H. A critical review on the simulations of wind turbine aerodynamics focusing on hybrid RANS-LES methods. Energy, 2017, 138: 257–289
CrossRef Google scholar
[33]
Menter F R. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal, 1994, 32(8): 1598–1605
CrossRef Google scholar
[34]
Yu H, Thé J. Validation and optimization of SST k--w turbulence model for pollutant dispersion within a building array. Atmospheric Environment, 2016, 145: 225–238
CrossRef Google scholar
[35]
Yu H, Thé J. Simulation of gaseous pollutant dispersion around an isolated building using the k–w SST (shear stress transport) turbulence model. Journal of the Air & Waste Management Association, 2017, 67(5): 517–536
CrossRef Google scholar
[36]
Daróczy L, Janiga G, Petrasch K, Comparative analysis of turbulence models for the aerodynamic simulation of H-Darrieus rotors. Energy, 2015, 90(Part 1): 680–690
CrossRef Google scholar
[37]
Hansen M, Sørensen J, Michelsen J, A global Navier-Stokes rotor prediction model. In: Proceedings of 35th Aerospace Sciences Meeting and Exhibit, Reno, NV, USA. 1997, 0970
[38]
Sørensen N, Hansen M. Rotor performance predictions using a Navier-Stokes method. In: Proceedings of 1998 ASME Wind Energy Symposium, Reno, NV, USA. 1998, 0025
[39]
Bak C, Fuglsang P, Sørensen N N, Airfoil Characteristics for Wind Turbines. Risø. Nation Laboratory, Roskilde, 1999
[40]
Mansour K, Meskinkhoda P. Computational analysis of flow fields around flanged diffusers. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 124: 109–120
CrossRef Google scholar
[41]
Aranake A C, Lakshminarayan V K, Duraisamy K. Computational analysis of shrouded wind turbine configurations using a 3-dimensional RANS solver. Renewable Energy, 2015, 75: 818–832
CrossRef Google scholar
[42]
Harvey N W, Ramsden K. A computational study of a novel turbine rotor partial shroud. Journal of Turbomachinery, 2001, 123(3): 534–543
CrossRef Google scholar
[43]
El-Zahaby A M, Kabeel A E, Elsayed S S, CFD analysis of flow fields for shrouded wind turbine’s diffuser model with different flange angles. Alexandria Engineering Journal, 2017, 56(1): 171–179
CrossRef Google scholar
[44]
Hashem I, Mohamed M H. Aerodynamic performance enhancements of H-rotor Darrieus wind turbine. Energy, 2018, 142: 531–545
CrossRef Google scholar
[45]
Kim B, Kim J, Kikuyama K, 3-D numerical predictions of horizontal axis wind turbine power characteristics of the scaled Delft University T40/500 Model. In: Proceedings of the 5th JSME-KSME Fluids Engineering Conference, Nagoya, Japan. 2002, 17–21
[46]
Hansen M O L, Johansen J. Tip studies using CFD and comparison with tip loss models. Wind Energy (Chichester, England), 2004, 7(4): 343–356
CrossRef Google scholar
[47]
Ferrer E, Munduate X. Wind turbine blade tip comparison using CFD. Journal of Physics: Conference Series, 2007, 75: 012005
CrossRef Google scholar
[48]
Laursen P, Enevoldsen P, Hjort S. 3D CFD quantification of the performance of a multi-megawatt wind. Journal of Physics: Conference Series, 2007, 75: 012007
CrossRef Google scholar
[49]
Amano R S, Malloy R J. CFD analysis on aerodynamic design optimization of wind turbine rotor blades. World Academy of Science, Engineering and Technology, 2009, 60: 71–75
[50]
Hashem I, Mohamed M H, Hafiz A A. Aero-acoustics noise assessment for wind-lens turbine. Energy, 2017, 118: 345–368
CrossRef Google scholar
[51]
Hashem I, Mohamed M H, Hafiz A A. Numerical prediction of aero-acoustics emitted from shrouded wind turbines. In: Proceedings of ICFD12: 12th International Conference of Fluid Dynamics, Le Méridien Pyramids Hotel, Egypt. 2016, 5008
[52]
Hashem I, Mohamed M H, Hafiz A A. Numerical investigation of small-scale shrouded wind turbine with a brimmed diffuser. In: Proceedings of ICFD12: 12th International Conference of Fluid Dynamics, Le Méridien Pyramids Hotel, Egypt. 2016, 5003
[53]
Dessoky A, Bangga G, Lutz T, Aerodynamic and aeroacoustic performance assessment of H-rotor Darrieus VAWT equipped with wind-lens technology. Energy, 2019, 175: 76–97
CrossRef Google scholar
[54]
Matsumiya H, Kogaki T, Takahashi N, Development and experimental verification of the new MEL airfoil series for wind turbines. In: Proceedings of Japan Wind Energy Symposium, 2000, 22: 92–95 (in Japanese)
[55]
Khamlaj T A, Rumpfkeil M. Optimization study of shrouded horizontal axis wind turbine. In: Proceedings of the 2018 Wind Energy Symposium, Kissimmee, Florida. 2018, 0996
[56]
Hashem I, Abdel Hameed H S, Mohamed M H. An axial turbine in an innovative oscillating water column (OWC) device for sea-wave energy conversion. Ocean Engineering, 2018, 164: 536–562
CrossRef Google scholar
[57]
Song Y, Perot J B. CFD simulation of the NREL phase VI rotor. Wind Engineering, 2015, 39(3): 299–309
CrossRef Google scholar
[58]
Kody S, Alpman E, Yilmaz B. Computational studies of horizontal axis wind turbines using advanced turbulence models. Fen Bilimleri Dergisi, 2014, 26(2): 36–46
CrossRef Google scholar
[59]
El-Baz A R, Youssef K, Mohamed M H. Innovative improvement of a drag wind turbine performance. Renewable Energy, 2016, 86: 89–98
CrossRef Google scholar

RIGHTS & PERMISSIONS

2020 Higher Education Press
AI Summary AI Mindmap
PDF(16629 KB)

Accesses

Citations

Detail

Sections
Recommended

/