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Influence of surface roughness on the cross-flow around a circular cylinder

  • Elmar Achenbach (a1)


The influence of surface roughness on the cross-flow around a circular cylinder is the subject of the present experimental work. The investigations were carried out in a high-pressure wind tunnel, thus high Reynolds numbers up to Re = 3 × 106 could be obtained. Local pressure and skin friction distributions were measured. These quantities were evaluated to determine the total drag coefficient and the percentage of friction as functions of Reynolds number and roughness parameter. In addition the local skin friction distribution yields the angular position of boundary-layer transition from laminar to turbulent flow and the location of boundary-layer separation.



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Achenbach, E. 1968 Distribution of local pressure and skin friction around a circular cylinder in cross-flow up to Re = 5 × 106. J. Fluid Mech. 34, 625639.
Allen, H. J. & Vincenti, W. G. 1944 Wall interference in a two-dimensional-flow wind tunnel, with consideration of the effect of compressibility. Nat. Adv. Comm. Aero. Wash., Rep. 782.
Fage, A. & Warsap, J. H. 1930 The effect of turbulence and surface roughness on the drag of a circular cylinder. Aero. Res. Com. London, R. & M. no. 1283.
Nikuradse, J. 1933 Strömungsgesetze in rauhen Rohren. Forsch. Arb. Ing.-Wes. Heft 361.
Roshko, A. 1961 Experiments on the flow past a circular cylinder at very high Reynolds number J. Fluid Mech. 10, 345356.
Schlichting, H. 1936 Experimentelle Untersuchungen zum Rauhigkeitsproblem. Ing.-Arch. 134. Translation: Proc. Soc. Mech. Eng. USA (1936).
Schlichting, H. 1964 Grenzschicht-Theorie. G. Braun.
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Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
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