Novel Design of a Vertical Axis Hydrokinetic Turbine –Straight-Blade Cascaded (VAHT–SBC): Experimental and Numerical Simulation


  • Ridho Hantoro Engineering Physics Department, Institut Teknologi Sepuluh Nopember Surabaya,
  • Erna Septyaningrum Engineering Physics Department, Institut Teknologi Sepuluh Nopember Surabaya,



cascaded blade, CFD, hydrokinetic, passive-pitch, turbine performance, vertical axis turbine.


A promising technology to reduce dependency on fossil fuels is hydrokinetic energy conversion using either turbine and non-turbine technology. Hydrokinetic turbine technology is penalized by low efficiency and lack of self-starting. This study involved experimental testing and numerical simulation of a novel hydrokinetic turbine design, called a Vertical Axis Hydrokinetic Turbine – Straight-Blade Cascaded (VAHT–SBC). Three configurations of the design were tested. Model 1 had 3 passive-pitch blades, while Model 2 and Model 3 had 6 and 9 blades respectively, where the outer blades were passive-pitch and the others fixed-blade. Both in the experimental test and in the numerical simulation Model 3 outperformed the other two models. The Cp of Model 3 was 0.42, which is very close to the theoretical Cp for VAHTs (0.45). It worked properly at low TSR. A CFD simulation based on the RANS solver was performed to gain supplementary information for performance investigation. This simulation confirmed that the torque changes because of the change in angle of attack as the turbine rotates. Because they have different numbers of blades, each model has different periodical torque fluctuation patterns. This study verified that utilization of cascaded blades and a passive-pitch mechanism is able to improve turbine performance.


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Author Biographies

Ridho Hantoro, Engineering Physics Department, Institut Teknologi Sepuluh Nopember Surabaya,

Engineering Physics Department

Erna Septyaningrum, Engineering Physics Department, Institut Teknologi Sepuluh Nopember Surabaya,

Engineering Physics Department


Lago, L.I., Ponta, F.L. & Chen, L., Advances and Trends in Hydrokinetic Turbine Systems, Energy Sustain. Dev., 14(4), pp. 287-296, 2010.

Posa, A., Parker, C.M., Leftwich, M.C. & Balaras, E., Wake Structure of a Single Vertical Axis Wind Turbine, Int. J. Heat Fluid Flow, 61, pp. 75-84, 2016.

Ross, I. & Altman, A., Wind Tunnel Blockage Corrections: Review and Application to Savonius Vertical-Axis Wind Turbines, J. Wind Eng. Ind. Aerodyn., 99(5), pp. 523-538, 2011.

Tescione, G., Simo Ferreira, C.J. & van Bussel, G.J.W., Analysis of a Free Vortex Wake Model for the Study of the Rotor and Near Wake Flow of a Vertical Axis Wind Turbine, Renew. Energy, 87, pp. 552-563, 2016.

Beri, H. & Yao, Y., Double Multiple Streamtube Model and Numerical Analysis of Vertical Axis Wind Turbine, Energy Power Eng., 3(3), pp. 262-270, 2011.

Takamatsu, Y., Furukawa, A., Okuma, K. & Takenaouchi, K., Experimental studies on a Preferable Blade Profile for High Efficiency and the Blade Characteristics of Darrieus-Type Cross-Flow Water Turbine, JSME Int. J., 34, 1991.

Zanforlin, S., Burchi, F. & Bitossi, N. Hydrodynamic Interactions between Three Closely-spaced Vertical Axis Tidal Turbines, Energy Procedia, 101, pp. 520-527, 2016.

Yang, B. & Lawn, C., Fluid Dynamic Performance of a Vertical Axis Turbine for Tidal Currents, Renew. Energy, 36, pp. 3355-3366, 2011.

Erwandi, Design of Wave-Current Rotor Converter Prototype for Ocean Current Kinetic Energy Conversion and Ocean Waves Potential Energy into Electrical Energy, Technical Report, Surabaya, 2015.

Kirke, B.K., Tests on Ducted and Bare Helical and Straight Blade Darrieus Hydrokinetic Turbines, Renew. Energy, 36(11), pp. 3013-3022, 2011.

Scheurich, F., Fletcher, T.M. & Brown, R.E., The Influence of Blade Curvature and Helical Blade Twist on the Performance of a Vertical-Axis Wind Turbine, 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, pp. 1-16, 2010.

Worstell, M.H. Aerodynamic Performance of the 17 Meter Diameter Darrieus Wind Turbine, Sandi Report, Sand78-1737, Sandia National Laboratories, New Mexico, California, United States,1978.

Castelli, M.R. Effect of Blade Inclination Angle on a Darrieus Wind Turbine, 134, pp. 1-10, 2017.

Hwang, I.S., Lee, Y.H. & Kim, S.J., Optimization of Cycloidal Water Turbine and the Performance Improvement by Individual Blade Control, Appl. Energy, 86(9), pp. 1532-1540, 2009.

Claessens, M.C., The Design and Testing of Airfoils for Application in Small Vertical Axis Wind Turbines, Masters of Science Thesis, Delft University of Technology, 2006.

Roynarin, W., Optimisation of Vertical Axis Wind Turbines, Northumbria Univ., 2004.

Batten, W.M.J., Bahaj, A.S., Molland, A.F. & Chaplin, J.R. Hydrodynamics of Marine Current Turbines, Renew. Energy, 31(2), pp. 249-256, 2006.

Balaka, R. & Rachman, A. Pitch Angle Effect for Horizontal Axis River Current Turbine, Procedia Eng, 50, pp. 343-353, 2012.

Atmadi, S. & Fitroh, A.J., Effect Analysis of Pitch Angle, To Acquire Optimal Power of LPN-SKEA Wind Turbine 50 kW at Several Wind Speed Conditions, 7(1), pp. 60-66, 2009.

Hantoro, R., Utama, I. K.A.P, Erwandi, E. & Sulisetyono, A. An Experimental Investigation of Passive Variable-Pitch Vertical-Axis Ocean Current Turbine, ITB J. Eng. Sci., 43(1), pp. 27-40, 2011.

Ferreira, C.J.S., Van Zuijlen, A., Bijl, H., Van Bussel, G. & Van Kuik, G., Simulating Dynamic Stall in a Two-dimensional Vertical-axis Wind Turbine: Verify Cation and Validation with Particle Image Velocimetry Data, Wind Energy, 13, pp. 1-17, 2010.

Li, C., Zhu, S., Xu, Y. & Xiao, Y., 2.5D Large Eddy Simulation of Vertical Axis Wind Turbine in Consideration of High Angle of Attack Flow, Renew. Energy, 51, pp. 317-330, 2013.

Jing, F., Sheng, Q. & Zhang, L. Experimental Research on Tidal Current Vertical Axis Turbine with Variable-pitch Blades, Ocean Eng., 88, pp. 228-241, 2014.

Paraschivoiu, I., Delclaux, F., Fraunie, P. & Beguier, C., Aerodynamic Analysis of the Darrieus Wind Turbines Including Secondary Effects, J. Energy, 7(5), pp. 416-422, 1983.

Eriksson, S. Bernhoff, H. & Leijon, M. Evaluation of Different Turbine Concepts for Wind Power, Renew. Sustain. Energy Rev., 12(5), pp. 1419-1434, 2008.

Derakhshan, S., Ashoori, M. & Salemi, A., Experimental and Numerical Study of a Vertical Axis Tidal Turbine Performance, Ocean Eng., 137, pp. 59-67, 2017.

Derakhshan, S. & Kasaeian, N., Optimization, Numerical, and Experimental Study of a Propeller Pump as Turbine, J. Energy Resour. Technol., 136(1), p. 12005, 2014.

Menter, F.R., Two-equation Eddy-viscosity Turbulence Models for Engineering Applications, The American Institute of Aeronautics and Astronautics Journal, 32(8), pp. 1598-1605, 1994.

Li, Y. & Calisal, S.M., Modeling of Twin-turbine Systems with Vertical Axis Tidal Current Turbine: Part II - Torque Fluctuation, Ocean Eng., 38, pp. 550-558, 2011.




How to Cite

Hantoro, R., & Septyaningrum, E. (2018). Novel Design of a Vertical Axis Hydrokinetic Turbine –Straight-Blade Cascaded (VAHT–SBC): Experimental and Numerical Simulation. Journal of Engineering and Technological Sciences, 50(1), 73-86.




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