An experimental study of Taylor-Goertler vortices in a curved rectangular channel.
McKee, Robert Joe
Kelleher, Matthew D.
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A rectangular cross section channel, with both a straight and a curved portion, was designed and built to create the laminar secondary Taylor-Goertler vortex flow. An aerosol was used to visualize these flow patterns, and photographs of the results are presented. A hot wire anemometer investigation of one location in the curved section was conducted to obtain the mean velocity profiles and turbulence levels. The pressure drop along both the straight and the curved sections was measured and compared. A constant temperature wall heater was also designed and installed in the straight section of the channel. Approximate values of the heating losses were obtained and the overall and local heat transfer coefficients were calculated for the straight portion of the channel. It was concluded that the vortices develop with both velocity increases and distance along the channel, and that the increase in pressure drop due to the vortices varied from near zero to approximately 20% with increasing Reynolds numbers.
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