The physical consideration, taken as a starting point, has been based on the change of duration of each wave half-cycle by the superposition of a current. The Keulegan-Carpenter number could reflect that feature if the wave plus current velocity replaces the wave velocity as the reference velocity. It is also argued that the ratio of current to wave velocity is a more appropriate parameter than the reduced velocity. The modified Keulegan-Carpenter numbers separate different observed flow regimes in a coherent manner in drag coefficient and current-to-wave velocity plane.

1.
Hardwick, J. D., and Wootton, R. L. 1973. “The Use of Model and Full-Scale Investigations of Marine Structures,” International Symposium Vibration Problems in Industry, ed., J. R. Wakefield, Keswick, England, Paper No. 127.
2.
King
R.
,
Prosser
M. J.
, and
Johns
D. J.
,
1973
, “
On Vortex Excitation Model Piles in Water
,”
Journal of Sound and Vibration
, Vol.
29
, pp.
169
188
.
3.
Sarpkaya, T., Bakinis, C., and Storm, M. A., 1984, “Hydrodynamic Forces From Combined Wave and Current Flow on Smooth and Rough Circular Cylinders at High Reynolds Numbers,” Ocean Technology Conference, Houston, TX, OTC 4830.
4.
Sarpkaya, T., and Isaacson, M., 1981. Mechanics of Wave Forces on Offshore Structures, Van Nostrand Reinhold, New York, NY.
5.
Sarpkaya
T.
,
Putzig
C.
, and
Gordon
D.
,
1992
.“
Vortex Trajectories Around a Circular Cylinder in Oscillatory Plus Mean Flow
,”
ASME JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING
, Vol.
114
, pp.
291
298
.
6.
Sarpkaya
T.
, and
Storm
T.
,
1985
, “
In-line Force on Cylinder Translating in Oscillatory Flow
,”
Applied Ocean Research
, Vol.
7
, pp.
188
196
.
7.
Verley, R. L. P., and Moe, G. 1979a, “The Effect of Cylinder Vibration on the Drag Force and the Resultant Hydrodynamic Damping,” Mechanics of Wave-Induced Forces on Cylinders, ed., T. L. Shaw, Pitman, pp. 521–531.
8.
Verley, R. L. P., and Moe, G., 1979b, “The Forces on a Cylinder Oscillating in a Current,” The Norwegian Institute of Technology, STF60 A79061 (25 flow visualization films prints).
9.
Williamson
C. H. K.
,
1985
, “
Sinusoidal Flow Relative to Circular Cylinders
,”
Journal of Fluid Mechanics
, Vol.
155
, pp.
141
174
.
This content is only available via PDF.
You do not currently have access to this content.