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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v34.i2.60
pages 179-190

Statistical Analysis of the Turbulence Structure Downstream of a Short Roughness Strip

M. O. Oyewola
Department of Mechanical Engineering University of Ibadan Ibadan, Nigeria
M. S. Adaramola
Division of Energy and Process Engineering, Norwegian University of Science and Technology Trondheim, Norway
A. O. Olaberinjo
Chemical, Petroleum and Gas Department University of Lagos, Nigeria
O. A. Obiyemi
Department of Mathematics and Statistics Osun State Polytechnics, Iree, Nigeria

RÉSUMÉ

The statistical analyses of the measurements of the turbulence structure have been examined in a wall-bounded turbulent flow subjected to a short roughness strip. The results are compared with the undisturbed boundary layer. It is found that the energy distributions among eddies are altered at the presence of the roughness strip, and this alteration lead to a modification of the turbulent structure downstream of the roughness strip. The change is stronger near the wall of the boundary layer.


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