Application of Boundary Layer Fences and Vortex Generators in Improving Performance of S-Duct Diffusers-Reference-Cited by-同舟云学术

Application of Boundary Layer Fences and Vortex Generators in Improving Performance of S-Duct Diffusers

Published:2001-08-24 Issue:1 Volume:124 Page:136-142
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Sullerey R. K.¹,Mishra Sourabh²,Pradeep A. M.²

Affiliation:

1. Department of Aerospace Engineering, Indian Institute of Technology, Kanpur-208 016, India

2. Department of Aerospace Engineering, Indian Institute of Technology, Kanpur, India

Abstract

An experimental investigation was undertaken to study the effect of various fences and vortex generator configurations in reducing the exit flow distortion and improving total pressure recovery in two-dimensional S-duct diffusers of different radius ratios. Detailed measurements including total pressure and velocity distribution, surface static pressure, skin friction, and boundary layer measurements were taken in a uniform inlet flow at a Reynolds number of 7.8×105. These measurements are presented here along with static pressure rise, distortion coefficient, and the transverse velocity vectors at the duct exit determined from the measured data. The results indicate that substantial improvement in static pressure rise and flow quality is possible with judicious deployment of fences and vortex generators.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/124/1/136/5900966/136_1.pdf

Reference17 articles.

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3. Taylor, A.M.K.P., Whitelaw, J.H., and Yianeskis, M., 1982, “Curved Ducts with Strong Secondary Motion: Velocity Measurements of Developing Laminar and Turbulent Flow,” ASME J. Fluids Eng., 104, pp. 350–359.

4. McConnaughey, P., Cornelison, J., and Barker, L., “The Prediction of Secondary Flows in Curved S-ducts of Square Cross-Section,” 1989, AIAA Paper 89-0276.

5. Majumdar, B., Singh, S.N., and Agarwal, D.P., 1997, “Flow Characteristics in S-Shaped Diffusing Duct,” International Journal of Turbo and Jet Engines, 14, pp. 45–57.

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