Fully Cavitating Hydrofoils in Nonuniform Motion Under a Free Surface
Keyword(s):
A simple linearized theory for the problem of a two-dimensional thin supercavitating hydrofoil in nonuniform motion is developed. General expressions are presented for frequency-response function, lift and moment coefficients. It is found that, in general, the lift and moment vary appreciably with the depth of submersion. At a depth-chord ratio of unity (typical value), the nonsteady characteristics are not well approximated by either the deeply submerged or surfaced hydrofoil results. Detailed numerical results for the cases of a rigid foil performing heaving oscillations or entering the sinusoidal gust, based on digital-machine calculation, are given.
2019 ◽
1989 ◽
Vol 55
(515)
◽
pp. 1582-1589
Keyword(s):
Uncertainty analysis of strain modal parameters by Bayesian method using frequency response function
2007 ◽
Vol 6
(2)
◽
pp. 183-189
◽
Keyword(s):