Laser-Doppler anemometry has been applied to approximately two-dimensional turbulent air flow in rotating two pass channel with turbulator of rectangular cross section (AR=3:1). The axis of rotation is normal to the axis of the duct, and the flow is radially outward/inward. The duct is of finite length and the walls are isothermal. Two sided oppositely ribbed channel including one sided ribbed U bend of at are experimentally conducted with and 10,000. The main features of the flow, reattachment length, recirculation zone, and mean velocity as well as turbulent intensity and shear stress distributions are presented in ribbed ducts. The measured flow field is found to be quite complex, consisting of secondary cross-stream flows due to the Coriolis effects and centrifugal forces with rib-roughened surfaces.
Turbulent Flow in a Rotating Two Pass Ribbed Rectangular Channel
Contributed by the International Gas Turbine Institute for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received by the IGTI Aug. 1998, revised manuscript received May 2003. Associate Editor: R. S. Bunker.
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Hsieh, S., and Chin, H. (December 1, 2003). "Turbulent Flow in a Rotating Two Pass Ribbed Rectangular Channel ." ASME. J. Turbomach. October 2003; 125(4): 609–622. https://doi.org/10.1115/1.1622714
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