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Volume 12, Issue 23 (9-2016)
Marine Engineering 2016, 12(23): 37-44 |
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Kamali Monfared R, Ahmadi Asl H, Rad M. Designing and Building of a Shroud to Increase Fluid Velocity with Capability to Use for Axial Water Turbines. Marine Engineering 2016; 12 (23) :37-44
URL: http://marine-eng.ir/article-1-456-en.html
URL: http://marine-eng.ir/article-1-456-en.html
1- Dept. of Mechanical Eng., South Tehran Branch, Islamic Azad University
Abstract: (4881 Views)
Existence of the coasts in the north and south of Iran cause to create potential areas to produce electricity by tidal and wave energies. Therefore, increase of fluid velocity is required to exploit these areas. A new generation of turbines is created by designing and building a shroud to increase fluid velocity which it increases kinetic energy of flow and generates more electricity at coastlines and riverbeds.
Based on airfoils characteristics, a shroud with an airfoil cross-section form was designed which increases water velocity approximately 2.8 times greater than far field flow numerically. The shroud was built and tested experimentally. Moreover, several propellers were installed in the shroud. Rotational speeds of the propellers in two states of with and without shroud were compared and they were proportional to increase ratio of flow velocity. Consequently, more power is generated by installing a turbine in the shroud.
References
1. 1. Akhlaghi, M. S., Rad, M. and Seif, M. S., (2010), An investigation of drag force around cylinder and floaters by emphasizing on specific colors, 12th National Conference of Marine Industries of Iran, Tehran, Iran. (In Persian)
2. 2. Azimi, A. and Rad, M., (2009), Investigation flow around super cavitation under water bodies, 17th Annual International Conference on Mechanical Engineering, ISME, University of Tehran, Tehran, Iran.
3. 3. Niknafs, A., (2010), Experimental investigation of drag on tubular frustum immersed in water moving in different directions and variation of drag coefficient, Master of Science Thesis, IAU (South Tehran Branch), Tehran, Iran. (In Persian)
4. 4. Ghasempour, V. and Rad, M., (2012), Investigation of drag force on half tubular frustum with and without roughness, Mechanical Engineering Sharif, Vol.28 , p. 95-100. (In Persian)
5. 5. Lotfi, A. and Rad, M., (2012), Drag performance of divergent tubular-truncated cones: a shape optimization study, International Journal of Environmental Science and Technology, Vol. 9, p. 105-112.
6. 6. Sanei, H. and Rad, M., (2012), Numerical optimization and experimental analysis of an annulus truncated conoid airfoil body in realistic dimensions and its effect on wind speed increase, Master of Science Thesis, IAU (Science and research Branch), Tehran, Iran. (In Persian)
7. 7. Kamali Monfared, R., (2016), Designing of new wind turbines to generate electricity at affordable prices with condition in Iran, Master of Science Thesis, IAU (South Tehran Branch), Tehran, Iran. (In Persian)
8. 8. Ahmadi Asl, H., (2016), Building of new wind turbines to generate electricity at affordable prices with condition in Iran, Master of Science Thesis, IAU (South Tehran Branch), Tehran, Iran. (In Persian)
9. Cengel, Y. A. and Cimbala, J. M., (2010), Fluid Mechanics Fundamentals and Applications, First Ed, McGraw-Hill.
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