An Experimental Study of the Secondary Flow in a Curved Rectangular Channel PDF Download
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Author: M. D. Kelleher
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Author: M. D. Kelleher
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Author: David Lee Flentie
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 63
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Book Description
A rectangular cross section channel, designed and built by R. McKee to create the laminar secondary Taylor-Goertler vortex flow, was modified to expand the experimental investigation of the vortex flow. The modification allowed the hot wire anemometer, used to obtain velocity profiles, to be moved in both the radial and transverse direction. This additional freedom permitted a rectangular cross section of the flow to be investigated. It was concluded that the onset of Taylor-Goertler vortices was in agreement with existing information, that the intensity of the vortices increased with increasing flow rate, and turbulent fluctuations grew within the vortex structure.
Author: John R. Hawk (III.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 75
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An experimental investigation was conducted to study convective heat transfer in straight and curved rectangular channels of high aspect ratio that approximate plates of infinite extent. Experiments were performed at steady state in the turbulent flow regime with one wall held at a constant heat flux and the opposite wall essentially adiabatic. The effect of curvature induced secondary flow on heat transfer on the concave and convex walls was observed by comparing Nusselt numbers for four different configurations at several different Reynolds numbers. Significant heat transfer enhancement was observed on the concave wall. Correlations for Nusselt number as a function of Reynolds number were calculated for the cases studied. Keywords: Taylor Gortler Vortices; Duct Flow; Channel Flow; Curved Rectangular Channel; Secondary Flow; Heat Transfer; Dean Number; Theses.
Author: Robert Joe McKee
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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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. (Author).
Author: Wen Jei Yang
Publisher: Routledge
ISBN: 1351442619
Category : Technology & Engineering
Languages : en
Pages : 723
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Book Description
With contributions from some of the world's leading experts, the second edition of this classic reference compiles all major techniques of flow visualization and demonstrates their applications in all fields of science and technology. A new chapter has been added that covers flow visualization applications in large wide tunnels for airplane and automobile testing. Several important examples of applications are included. A second new chapter details the use of infrared (IR) cameras for detecting and observing the boundary layer transition in industrial wind tunnels and flight testing of commercial transport airplanes. A final new chapter has been added on multiphase flow and pulsed-light velocimetry.
Author: Arthur T. Ippen
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 434
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Author: Alexandre José Pessanha de Oliveira Caimoto Duarte
Publisher:
ISBN:
Category :
Languages : en
Pages : 157
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Author: Reza Ahmadi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 544
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Author: N. Rajaratnam
Publisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 0
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