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Design of Composite Water Turbine in Free Stream Using CFD

[+] Author Affiliations
Jifeng Wang, Marco Vagani, Norbert Müller

Michigan State University, East Lansing, MI

Paper No. IMECE2010-39763, pp. 1153-1159; 7 pages
doi:10.1115/IMECE2010-39763
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4429-8
  • Copyright © 2010 by ASME

abstract

The objective of this paper is to investigate the performance of composite material axial water turbines in a free stream using Fluent, a Finite Volume based commercial CFD package. Based on three dimensional numerical flow analysis and fluid-structure interaction, the flow characteristics of water turbines including a nozzle, impeller and diffuser are predicted. The extracted power coefficient is calculated for water turbines of different tip speed ratios in a free stream of water with inlet velocity of 2.5m/s. The extracted powers of one single turbine unit and an array with ten turbine units are analyzed and compared for different rotating speeds and water inlet velocities. The calculated results will provide a fundamental understanding of the impeller as a water turbine, and this design method is used to shorten the design process and improve the water turbine’s performance.

Copyright © 2010 by ASME

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