Investigation the Performance of Stream Water Wheel Turbines using CFD Techniques

Yıl 2018, Sayı: 2, 354 - 360, 19.08.2018

Mohammad A. Al-dabbagh

Öz

A stream water wheel is a machine for converting
the energy of moving water into power. It consists of a large metal wheel, with
a number blades arranged on the outer rim which allows the wheel to be rotated
by the water striking the blades. Water wheels were used since ancient as a
primary source of power. It was used for irrigation, grain milling and
supplying villages with water. In the present study, a stream water wheel
turbine of 5 m in diameter is numerically simulated using ANSYS-CFX package
under different flow conditions. The wake region behind the turbine is
monitored where it influences on other turbines next to it. The simulation
results have shown that in case of constructing a farm of wheel turbines, the
streamwise span should not be less than 6 m. The stream wheel turbines works
normally at a tip speed ratio TSR less than unity.

Anahtar Kelimeler

Hydrokinetic turbines, Stream-water wheel turbine, Efficiency, CFD

Kaynakça

• Biscarini, C., Francesco, S. D. & Manciola, P. (2010). CFD modelling approach for dam break flow studies. Hydrol. Earth Syst. Sci, Vol. 14, pp. 705–718. Chevallet, G., Jellouli, M. & Deroo, L. (2012). Democratization of 3D CFD hydraulic models: several Examples performed with ANSYS CFX. SimHydro: New trends in simulation. Sophia Antipolis. Denny M. The efficiency of overshot and undershot water wheels. European Journal of Physics; 2004. 25: 193-202. Institute of Technology – Baghdad – Iraq, 2013. Muller G, Denchfield S, Marth R and Shelmerdine R. Stream wheels for applications in shallow and deep water. Proceedings of 32nd IAHR Congress, Venice, Italy, Theme C2c, paper 291; 2007. Muller G, Kauppert C. Performance characteristics of water wheels. Journal of Hydraulic Research; 2004a. 42(5):451-60. Paudel S, Linton N, Zanke UCE, Saenger N. Experimental investigation on the effect of channel width on flexible rubber blade water wheel performance, Renewable Energy; 2013. 52:1-7. Quaschning V. Renewable energy and climate change. Singapore: Wiley; 2010. Schlager N, Weisblatt J, editors. Alternative energy.Vol.1.China: Thomson Gale; 2006. Speziale, C. G., Sarkar, S., & Gatski, T. B. (1991). Modeling the Pressure-Strain Correlation of Turbulence: An Invariant Dynamical Systems Approach. J. of Fluid Mechanics, Vol. 227, pp. 245-272. Woods G, Tickle A, Chandler P, Beardmore J, Pymm R. Peak power: Developing micro hydropower in the peak district, friends of the peak district, UK; 2010. Available at: http://www.friendsofthepeak.org.uk/download/files/HYDRO/PEAKPOWERMainreportAppA.pdf; 2010 [accessed: 30.09.12].