CFD Simulation of Water Gravitation Vortex Pool Flow for Mini Hydropower Plants
DOI:
https://doi.org/10.11113/jt.v74.4645Keywords:
CFD, vortex pool, energy extraction, gravitation water system, mini hydropowerAbstract
Mini hydropower plants can be expected to have a good potential to provide electricity to remote communities. An important part of this economic and clean energy system is the conversion of the low-head potential energy into kinetic energy to drive the power turbines. One way of converting the low-head potential energy is using a gravitation vortex pool. This paper describes work to optimize the vortex pool to improve energy conversion and hence generate electricity from low heads of between 0.7 m to 3 m. The commercial Computational Fluid Dynamics (CFD) code ANSYS Fluent was used in this study to investigate the optimum configuration of the vortex pool system. The free surface flow of this system was mathematically described. A parametric study was carried out using the software to determine the main parameters affecting the efficiency of the energy conversion. This parametric study utilized Fluent, which focused on the effect of changing water depth and outlet diameter on inlet/outlet speed; which is novel approach. The results from this study could help in the investigation of the optimum configuration of the vortex pool system. Â
References
J. K. Kaldellis, M. Kapsali, E. Kaldelli, E. Katsanou. 2013. Comparing Recent Views of Public Attitude on Wind Energy, Photovoltaic and Small Hydro Applications. Renewable Energy. 52: 197–208.
A. A. Lahimer, M. A. Alghoul, K. Sopian, N. Amin, N. Asim, M. I. Fadhel. 2012. Research and Development Aspects of Pico-hydro Power. Renewable and Sustainable Energy Reviews. 16: 5861–5878.
N. K. Sharma, P. K. Tiwari, Y. R. Sood. 2013. A Comprehensive Analysis of Strategies, Policies and Development of Hydropower in India: Special Emphasis on Small Hydro Power. Renewable and Sustainable Energy Reviews. 18 460-470.
M. J. Khan, G. Bhuyan, M. T. Iqbal, J. E. Quaicoe. 2009. Hydrokinetic Energy Conversion Systems and Assessment of Horizontal and Vertical Axis Turbines for River and Tidal Applications: A Technology Status Review. Applied Energy. 86: 1823–1835.
S. Wanchat, R. Suntivarakorn. 2012. Preliminary Design of a Vortex Pool for Electrical Generation. Advanced Science Letters. 13: 173–177.
Yaakob, O. B., Yasser M Ahmed, Elbatran, A. H., Shabara H. M. 2014. A Review on Micro Hydro Gravitational Vortex Power and Turbine Systems. Jurnal Teknologi. 69(7).
S. Ahmad, M. Z. A. A. Kadir, S. Shafie. 2011. Current Perspective of the Renewable Energy Development in Malaysia. Renewable and Sustainable Energy Reviews. 15: 897–904.
K. Sopian, B. Ali, N. Asim. 2011. Strategies for Renewable Energy Applications in the Organization of Islamic Conference (OIC) Countries. Renewable and Sustainable Energy Reviews. 15: 4706–4725.
Elbatran, A. H., Yaakob, O. B, Yasser M Ahmed, Shabara, H. M. Operation. 2015. Performance and Economic Analysis of Low Head Micro-Hydropower Turbines for Rural and Remote Areas: A Review. Renewable and Sustainable Energy Reviews. 43: 40–50.
H. C. Ong, T. M. I. Mahlia, H. H. Masjuki. 2011. A Review on Energy Scenario and Sustainable Energy in Malaysia. Renewable and Sustainable Energy Reviews. 15: 639–647.
Darmawi, R. Sipahutar, S. M. Bernas, M. S. Imanuddin. 2013. Renewable Energy and Hydropower Utilization Tendency Worldwide. Renewable and Sustainable Energy Reviews. 17: 213–215.
Y.-l. Chen, C. Wu, M. Ye, X.-m. Ju. 2007. Hydraulic Characteristics of Vertical Vortex at Hydraulic Intakes. Journal of Hydrodynamics. Ser. B. 19: 143–149.
Y. Chen, C. Wu, B. Wang, M. Du. 2012. Three-dimensional Numerical Simulation of Vertical Vortex at Hydraulic Intake. Procedia Engineering. 28: 55–60.
X. Shi, F. Yang, R. Dai, T. Chen, Y. Wu. 2012. Simulation of Free-surface Vortex Produced by a Rotating Cylindrical Wall Below A Static Barrel. In: IOP Conference Series: Earth and Environmental Science, IOP Publishing. 052034.
F. Trivellato. 2010. Anti-vortex Devices: Laser Measurements of the Flow and Functioning. Optics and Lasers in Engineering. 48: 589–599.
B. Li, F. Tsukihashi. 2005. Vortexing Flow Patterns in a Water Model of Slab Continuous Casting Mold. ISIJ International. 45: 30–36.
R. Gupta, M. D. Kaulaskar, V. Kumar, R. Sripriya, B. C. Meikap, S. 2008. Chakraborty, Studies on the Understanding Mechanism of Air Core and Vortex Formation in a Hydrocyclone. Chemical Engineering Journal. 144: 153–166.
Evans, Wanwilai Kraipech, Suksangpanomrung, Anotai, and Nowakowski, Andrzej F. 2008. The Simulation of the Flow Within a Hydrocyclone Operating with an Air Core and With an Inserted Metal Rod. Chemical Engineering Journal. 143(1–3): 51–61.
P. Basu, D. Agarwal, T. J. Tharakan, A. Salih. 2013. Numerical Studies on Air-Core Vortex Formation During Draining of Liquids from Tanks. International Journal of Fluid Mechanics Research. 40(17).
N. Popescu, D. Robescu. 2011. Separation of Petroleum Residues Using the Vortex Separation Technique. Scientific Bulletin. 73: 131–138.
G. Glover, J. Fitzpatrick. 2007. Modelling Vortex Formation in an Unbaffled Stirred Tank Reactors. Chemical Engineering Journal. 127: 11–22.
T. Mahmud, J. N. Haque, K. J. Roberts, D. Rhodes, D. Wilkinson. 2009. Measurements and Modelling of Free-surface Turbulent Flows Induced by a Magnetic Stirrer in an Unbaffled Stirred Tank Reactor. Chemical Engineering Science. 64: 4197–4209.
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