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Internal Cooling Inside an L-Shaped Duct With Pin-Fin Turbulators Under Rotating and Non-Rotating Conditions With and Without Sand Particles

[+] Author Affiliations
B. Zhu, X. Chi, M. A. Bryden, T. I.-P. Shih

Iowa State University, Ames, IA

R. A. Dennis

National Energy Technology Laboratory, Morgantown, WV

M. K. Chyu

University of Pittsburgh, Pittsburg, PA

Paper No. GT2007-27598, pp. 533-543; 11 pages
doi:10.1115/GT2007-27598
From:
  • ASME Turbo Expo 2007: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2007, Parts A and B
  • Montreal, Canada, May 14–17, 2007
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4793-4 | eISBN: 0-7918-3796-3

abstract

Computations were performed to study the flow and heat transfer in an L-shaped duct with pin fin turbulators arranged in a staggered fashion under rotating and non-rotating conditions. Parameters investigated include rotational speed (0, 10,000, 20,000 rpm), distance of the L-shaped duct from the center of rotation (280, 600 mm), and orientation of L-shaped duct with respect to centerline of rotation (0 and 65 degrees). Computations were also performed to examine trajectory of particles in the L-shaped duct under rotating and non-rotating conditions with particle diameters of 0.1, 1.0, and 5.0 micrometers. This computational study is based on an Eulerian-Lagrangian formulation cast in a non-inertial frame of reference fixed on the rotating L-shaped duct. The ensemble average continuity, Navier-Stokes, and energy equations closed by the ideal gas equation of state and the two-equation realizeable k-ε turbulence model were used for the gas phase, and Lagrangian tracking with interphase transport of momentum and energy were employed for the particles.

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