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  • 1
    Electronic Resource
    Electronic Resource
    Turbulent boundary layer on a mildly curved convex surface (1984)
    Springer
    Experiments in fluids 2 (1984), S. 17-24 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Mean flow and turbulence measurements have been made in a boundary layer which grows first on a flat' wall and then on a convex wall of radius of curvature approximately 100 times the boundary layer thickness. The turbulence data include profiles of the four non-zero components of the Reynolds stress tensor and three triple velocity products obtained at five stream-wise positions. A number of measurements were also made for comparison in the boundary layer on a flat wall under the same conditions. The effects of convex curvature are to reduce turbulent intensities, shear stress and wall friction by approximately 10% of their plane flow values; the triple velocity products are halved in the curved layer. The measurements supplement the small quantity of previously published data available for testing mathematical models of turbulence. The results show the same general trends that have been observed in earlier investigations but there are significant differences in detail, notably in respect of levels of the normal stresses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266314
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Laser velocimetry measurements in a horizontal gas-solid pipe flow (1990)
    Springer
    Experiments in fluids 9 (1990), S. 205-212 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper presents laser measurements of particle velocities in a horizontal turbulent two-phase pipe flow. A phase Doppler particle analyzer, (PDPA), was used to obtain particle size, velocity, and rms values of velocity fluctuations. The particulate phase consisted of glass spheres 50 μm in diameter with the volume fraction of the suspension in the range φ p=10-4 to φ p=10-3. The results show that the turbulence increases with particle loading.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190420
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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