Experiments in Fluids

, Volume 26, Issue 3, pp 273–275 | Cite as

Drag characteristics of a turbulent boundary layer over a flat plate with transverse square grooves

  • C. Y. Ching
  • B. L. Parsons
Short communication


 The effect of transverse square grooves on the drag characteristics of a flat plate has been investigated using direct drag measurements in a tow tank. Two flat plates with 2.5 and 5 mm transverse square grooves, with groove spacing (s) to groove width (w) ratio, s/w=10, 20 and 40, were tested at plate length Reynolds numbers in the range 2–10×106. There is an increase in drag over the “smooth” plate for all s/w configurations.


Boundary Layer Reynolds Number Flat Plate Turbulent Boundary Layer Groove Width 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • C. Y. Ching
    • 1
  • B. L. Parsons
    • 2
  1. 1.Faculty of Engineering & Applied Science, Memorial University of Newfoundland, St. John’s, NF, A1B 3X5 CanadaCA
  2. 2.NRC Institute for Marine Dynamics, St. John’s Newfoundland, NF, A1B 3T5, CanadaCA

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