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Non-linear wave forces on a fixed vertical cylinder dueto the sum frequency of waves in irregular seas
A method for calculating second order forces on a vertical, large diameter circular cylinder is reported.Force spectra at sumfrequencies and difference frequencies as well as the first order force spectrum are calculated as a result of irregular waves generated from a Pierson-Moskowitz wave spectrum. Non-viscous fluid is assumed.Forces at sumfrequencies are compared to first order forces with focus on the wave period rangefrom 3 to 5 s, in which many deep water platforms have their first natural period.The calculations are also compared to model scale measurements performed in a wave flume at theNorwegian Hydrodynamic Laboratories in Trondheim.
Non-linear wave forces on a fixed vertical cylinder dueto the sum frequency of waves in irregular seas
A method for calculating second order forces on a vertical, large diameter circular cylinder is reported.Force spectra at sumfrequencies and difference frequencies as well as the first order force spectrum are calculated as a result of irregular waves generated from a Pierson-Moskowitz wave spectrum. Non-viscous fluid is assumed.Forces at sumfrequencies are compared to first order forces with focus on the wave period rangefrom 3 to 5 s, in which many deep water platforms have their first natural period.The calculations are also compared to model scale measurements performed in a wave flume at theNorwegian Hydrodynamic Laboratories in Trondheim.
Non-linear wave forces on a fixed vertical cylinder dueto the sum frequency of waves in irregular seas
Herfjord, K. (author) / Nielsen, F.G. (author)
Applied Ocean Research ; 8 ; 8-21
1985-06-15
14 pages
Article (Journal)
Electronic Resource
English
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