The objective of this research is mainly focused on environment-friendly and moderately slow flapping wind turbine which can easily operate in or near urban areas or rooftops owing to scale merit with low-frequency turbine noise, installation cost, avian mortality rate and safety consideration etc. The authors are focusing on lift based (LB) slow flapping wind turbine operated within a small attack angle amplitude whereas the previous research treated a lift and drag based (LDB) flapping turbine. Here, a unique trajectory for the wing motion was yet designed by using the Chebyshev dyad linkage mechanism as well as the previous report. The wind energy transferred to the mechanical rotation, adopting a single symmetric wing NACA0012. To obtain a smooth flapping motion for the blade, we optimize all fundamental parameters with our simulation model for optimum performance of the turbine. Both static and dynamic analysis has been conducted to confirm the feasibility of the present design. In addition, wind turbine performance was studied for a suitable range of free stream wind velocities. This report confirms that the developed flapping wind turbine can drive at slow speed with suitable energy extraction rate at different wind velocities. Moreover, we made a simple comparative study of the outcomes obtained from our previous lift and drag based flapping wind turbine with present one, i.e., lift based flapping turbine.
References
[1]
Sawin, J.L., Seyboth, K. and Sverrisson, F. (2016) Renewables 2016 Global Status Report.
http://www.ren21.net/wp-content/uploads/2016/05/GSR_2016_Full_Report_lowres.pdf
[2]
Bahaj, A.S., Myers, L., and James, P.A.B. (2007) Urban Energy Generation: Influence of Micro-Wind Turbine Output on Electricity Consumption in Buildings. Energy Build, 39, 154-165. https://doi.org/10.1016/j.enbuild.2006.06.001
[3]
The Carbon Trust (2008) Small-Scale Wind Energy Policy Insights and Practical Guid-ance Table of Contents. Carbon Trust, 1-40.
https://www.carbontrust.com/media/77248/ctc738_small-scale_wind_energy.pdf
[4]
Aslam Bhutta, M.M., Hayat, N., Farooq, A.U., Ali, Z., Jamil, S.R. and Hussain, Z. (2012) Vertical Axis Wind Turbine—A Review of Various Configurations and Design Techniques. Renewable and Sustainable Energy Reviews, 16, 1926-1939.
https://doi.org/10.1016/j.rser.2011.12.004
[5]
van Bussel, G.J.W. and Mertens, S.M. (2005) Small Wind Turbines for the Built Envi-ronment. The Fourth European & African Conference on Wind Engineering, Prague, 11-15 July 2005, 1-9.
[6]
Sasaki, S., Sakada, R. and Suzuki, K. (2014) Determination of Aerodynamic Sound Sources on Periodicity Noise Generated from a Micro Wind Turbine. Open Journal of Fluid Dynamics, 4, 440-446. https://doi.org/10.4236/ojfd.2014.45034
[7]
Barrios, L. and Rodríguez, A. (2004) Behavioural and Environmental Correlates of Soaring-Bird Mortality at On-Shore Wind Turbines. Journal of Applied Ecology, 41, 72-81. https://doi.org/10.1111/j.1365-2664.2004.00876.x
[8]
Bakker, R.H., Pedersen, E., van den Berg, G.P., Stewart, R.E., Lok, W. and Bouma, J. (2012) Impact of Wind Turbine Sound on Annoyance, Self-Reported Sleep Disturbance and Psychological Distress. Science of the Total Environment, 425, 42-51.
https://doi.org/10.1016/j.scitotenv.2012.03.005
[9]
Peng, Z. and Zhu, Q. (2009) Energy Harvesting through Flow-Induced Oscillations of a Foil. Physics of Fluids, 21, 1-9. https://doi.org/10.1063/1.3275852
[10]
Li, S. and Lipson, H. (2014) Vertical-Stalk Flapping-Leaf Generator for Wind Energy Harvesting. Proceedings of the ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Oxnard, 21-23 September 2009, 1-9.
[11]
Ashraf, M., Lai, J. and Young, J. (2007) Numerical Analysis of Flapping Wing Aerody-namics. Fluid Mechanics, 393, 1283-1290.
[12]
Lee, J.-S., Kim, D.-K., Lee, J.-Y. and Han, J.-H. (2008) Experimental Evaluation of a Flap-ping-Wing Aerodynamic Model for MAV Applications. Active and Passive Smart Struc-tures and Integrated Systems, 6928, Article ID: 69282M.
[13]
Conn, A.T., Burgess, S.C. and Hyde, R.A. (2006) Development of a Novel Flapping Mechanism with Adjustable Wing Kinematics for Micro Air Vehicles. WIT Transactions on Ecology and the Environment, 87, 277-286.
https://doi.org/10.2495/DN060271
[14]
Alam, M.S. and Hirahara, H. (2017) Numerical Performance Assessment of a Flap-ping-Type Vertical Axis Wind Turbine with Chebyshev-Dyad Linkage. Smart Grid and Renewable Energy, 8, 53-74. https://doi.org/10.4236/sgre.2017.82004
[15]
Kiwata, T., Yamada, T., Kita, T., Takata, S., Komatsu, N. and Kimura, S. (2010) Perfor-mance of a Vertical Axis Wind Turbine with Variable-Pitch Straight Blades utilizing a Linkage Mechanism. Journal of Environmental Engineering, 5, 213-225.
https://doi.org/10.1299/jee.5.213
[16]
bikowski, R., Galinski, Z.C. and Pedersen, C.B. (2005) Four-Bar Linkage Mechanism for Insectlike Flapping Wings in Hover: Concept and an Outline of Its Realization. Journal of Mechanical Design, 127, 817. https://doi.org/10.1115/1.1829091
[17]
Da Lio, M., Cossalter, V. and Lot, R. (2000) On the Use of Natural Coordinates in Optimal Synthesis of Mechanisms. Mechanism and Machine Theory, 35, 1367- 1389. https://doi.org/10.1016/S0094-114X(00)00006-9
[18]
Reuleaux, F. (1876) The Kinematics of Machinery: Outlines of a Theory of Machines. Dover Publications, Mineola.
[19]
Dijkamant, E.A. (1981) Watt.1 Linkages with Shunted Chebyshev-Dyads, Producing Symmetrical 6-Bar Curves. Mechanism and Machine Theory, 16, 153-165.
https://doi.org/10.1016/0094-114X(81)90061-6
[20]
Ho, S., Nassef, H., Pornsinsirirak, N., Tai, Y.C. and Ho, C.M. (2003) Unsteady Aerodynamics and Flow Control for Flapping Wing Flyers. Progress in Aerospace Sciences, 39, 635-681. https://doi.org/10.1016/j.paerosci.2003.04.001
[21]
Sheldahl, R.E. and Klimas, P.C. (1981) Aerodynamic Characteristics of Seven Symmet-rical Airfoil Sections through 180-Degree Angle of Attack for Use in Aerodynamic Analysis of Vertical Axis Wind Turbines, SAND80-211. Sandia National Laboratories, Albuquerque.
[22]
Cabrera, J.A., Simon, A. and Prado, M. (2002) Optimal Synthesis of Mechanisms with Genetic Algorithms. Mechanism and Machine Theory, 37, 1165-1177.
https://doi.org/10.1016/S0094-114X(02)00051-4
[23]
Renner, G. and Ekárt, A. (2003) Genetic Algorithms in Computer Aided Design. Computer Desks, 35, 709-726. https://doi.org/10.1016/S0010-4485(03)00003-4
[24]
Finger, S. and Dixon, J.R. (1989) A Review of Research in Mechanical Engineering Design. Part I: Descriptive, Prescriptive, and Computer-Based Models of Design Processes. Research in Engineering Design, 1, 51-67.
https://doi.org/10.1007/BF01580003
[25]
Cavazzati, M. (2013) Optimization Methods: Theory to Design. Springer Verlag, Berlin. https://doi.org/10.1007/978-3-642-31187-1
[26]
Rao, R.V. and Savani, V. (2012) Mechanical Design Optimization Using Advanced Op-timization Techniques, Springer Series in Advanced Manufacturing. Springer Verlag, London. https://doi.org/10.1007/978-1-4471-2748-2
