ANALYSIS OF BLOCKAGE CORRECTION METHODS FOR HORIZONTAL AXIS TIDAL STREAM TURBINE

Guo Bin; Wang Dazheng; Xia Lan; Jing Fengmei; Zhou Junwei

doi:10.19912/j.0254-0096.tynxb.2021-0572

PDF(2611 KB)

Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (9) : 382-390. DOI: 10.19912/j.0254-0096.tynxb.2021-0572

ANALYSIS OF BLOCKAGE CORRECTION METHODS FOR HORIZONTAL AXIS TIDAL STREAM TURBINE

Guo Bin¹, Wang Dazheng¹, Xia Lan², Jing Fengmei³, Zhou Junwei¹

Author information +

History +

Abstract

In this paper, different blockage correction methods for the hydrodynamic performance of horizontal axis tidal stream turbine are analyzed based on numerical simulations and model tests. Five correction methods from published literature are obtained, and the correction results are compared with those in free-stream condition. Finally, blockage correction methods, which can accurately predict the hydrodynamic performance of tidal stream turbine in free-stream condition, are obtained. The results show that the wall effect has obvious influence on the hydrodynamic performance of the turbine. Power coefficients and drag coefficients in limited conditions are higher than those in free-stream condition, and the wall effect on power coefficients is gradually increasing with the increase of tip speed ratio. Due to the influence of blockage factor and tip speed ratio, the prediction accuracy of blockage correction methods is different; Pope and Harper correction results and Bahaj correction results are in good agreement with the performance of tidal stream turbine in free-stream condition. The research results provide a reference for numerical simulation of turbine's hydrodynamic performance and engineering technology transformation.

Key words

numerical simulation / hydrodynamics / tidal stream / wall effect / power coefficient

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Guo Bin, Wang Dazheng, Xia Lan, Jing Fengmei, Zhou Junwei. ANALYSIS OF BLOCKAGE CORRECTION METHODS FOR HORIZONTAL AXIS TIDAL STREAM TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(9): 382-390 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0572

References

[1] GLAUERT H.Wind tunnel interference on wings, bodies and airscrews[R]. Aeronautical Research Committee Reports and Memoranda NO. 1566, 1933: 1-52.
[2] GLAUERT H.The elements of aerofoil and airscrew theory[M]. Cambridge: Cambridge University Press, 1947.
[3] MASKELL E C.A theory of blockage effects on bluff bodies and stalled wings in a close wind tunnel[R]. Aeronautical Research Committee Reports and Memoranda NO. 3400, 1963:1-22.
[4] POPE A, HARPER J J.Low-speed wind tunnel testing[M]. New York: John Wiley and Sons, 1966.
[5] MIKKELSEN R F, SØRENSEN J N. Modelling of wind turbine blockage[C] // Proceedings of Global Windpower Conference and Exhibition, Paris, France, 2002.
[6] BAHAJ A S, MOLLAND A F, CHAPLIN J R, et al.Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank[J]. Renewable energy, 2007, 32(3): 407-426.
[7] SHEN W Z, ZHU W J, SØRENSEN J N. Actuator line/Navier-Stokes computations for the MEXICO rotor: comparison with detailed measurements[J]. Wind energy, 2012, 15(5): 811-825.
[8] KOH W, NG E.A CFD study on the performance of a tidal turbine under various flow and blockage conditions[J]. Renewable energy, 2017, 107: 124-137.
[9] SCHLUNTZ J, WILLDEN R.The effect of blockage on tidal turbine rotor design and performance[J]. Renewable energy, 2015, 81: 432-441.
[10] TAMPIER G, TRONCOSO C, ZILIC F.Numerical analysis of a diffuser-augmented hydrokinetic turbine[J]. Ocean engineering, 2017, 145:138-147.
[11] HACKETT J E, COOPER K R.Extensions to Maskell's theory for blockage effects on bluff bodies in a closed wind tunnel[J]. Aeronautical journal, 2001, 105(1050):409-418.
[12] ROSS I, ALTMAN A.Wind tunnel blockage corrections: review and application to Savonius vertical-axis wind turbines[J]. Journal of wind engineering & industrial aerodynamics, 2011, 99(5): 523-538.
[13] SØRENSEN J N, SHEN W Z, MIKKELSEN R F. Wall correction model for wind tunnels with open test section[J]. AIAA journal, 2004, 44(8): 1890-1894.
[14] BURTON T, SHARPE D, JENKINS N, et al.Wind energy handbook[M]. New York:John Wiley and Sons, 2011.
[15] CHEN T Y, LIOU L R.Blockage corrections in wind tunnel tests of small horizontal-axis wind turbines[J]. Experimental thermal & fluid science, 2011, 35(3): 565-569.
[16] KINSEY T, DUMAS G.Impact of channel blockage on the performance of axial and cross-flow hydrokinetic turbines[J]. Renewable energy, 2017, 103: 239-254.
[17] GUO B, WANG D, ZHOU X, et al.Performance evaluation of a tidal current turbine with bidirectional symmetrical foils[J]. Water, 2020, 12(1): 1-21.
[18] FERZIGER J H, PERIĆ M.Further discussion of numerical errors in CFD[J]. International journal for numerical methods in fluids, 2015, 23(12): 1263-1274.
[19] CELIK I B, GHIA U.Procedure for estimation and reporting of uncertainty due to discretization in CFD applications[J]. Journal of fluids engineering, 2008, 130(7): 1-4.
[20] GARRETT C, CUMMINS P.The efficiency of a turbine in a tidal channel[J]. Journal of fluid mechanics, 2007, 588:243-251.
[21] SONG K, WANG W Q, YAN Y.Numerical and experimental analysis of a diffuser-augmented micro-hydro turbine[J]. Ocean engineering, 2019, 171: 590-602.