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Diffuser Optimization for a Micro-Hydrokinetic Turbine

[+] Author Affiliations
Jacob Riglin, W. Chris Schleicher, Alparslan Oztekin

Lehigh University, Bethlehem, PA

Paper No. IMECE2014-37304, pp. V007T09A077; 7 pages
doi:10.1115/IMECE2014-37304
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering Systems and Technologies
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4954-5
  • Copyright © 2014 by ASME

abstract

Small, hydrokinetic systems generating between 0.5 and 10 kW of power are potentially capable of portable power generation. A propeller turbine 18 inches in diameter is paired with a flanged diffuser and numerically simulated as a potential portable hydrokinetic system. The diffuser augmented hydrokinetic turbine (DAHkT) is investigated with a response surface optimization method, where geometric parameters of the system are systematically varied to determine their effects on the system power generation and thrust. The simulations are determined using a central composite design of experiments to minimize the number of simulations required to fit a second-order regression to the results. Potential optimum designs are determined from the regression model, further verified with simulations, and characterized for their entire operating range.

Copyright © 2014 by ASME

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