Radial velocity component measurements in cylindrical tubes have been difficult to make because of optical aberrations introduced by the curved tube wall. This is particularly troublesome in gas flows where refractive index matching techniques cannot be employed. The present investigation utilized a specially designed correction lens system to overcome this problem. As a result it was possible to map the axial and radial velocity behavior in detail for the air flow downstream of a sudden expansion in a cylindrical duct. Quantities measured and derived included mean velocities, turbulence intensities, turbulent kinetic energy and Reynolds stress. The weak secondary recirculation zone existing just below the sudden expansion was clearly identified and mapped. Where possible the measurements were compared with numerical predictions based on a k-ε model.
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December 1988
Research Papers
Radial and Axial Turbulent Flow Measurements With an LDV in an Axisymmetric Sudden Expansion Air Flow
R. P. Durrett,
R. P. Durrett
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
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W. H. Stevenson,
W. H. Stevenson
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
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H. D. Thompson
H. D. Thompson
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
Search for other works by this author on:
R. P. Durrett
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
W. H. Stevenson
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
H. D. Thompson
School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907
J. Fluids Eng. Dec 1988, 110(4): 367-372 (6 pages)
Published Online: December 1, 1988
Article history
Received:
August 13, 1987
Online:
October 26, 2009
Citation
Durrett, R. P., Stevenson, W. H., and Thompson, H. D. (December 1, 1988). "Radial and Axial Turbulent Flow Measurements With an LDV in an Axisymmetric Sudden Expansion Air Flow." ASME. J. Fluids Eng. December 1988; 110(4): 367–372. https://doi.org/10.1115/1.3243565
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