Four waves are used for the time and frequency domain dynamic analyses. Two are regular waves for ‘1-Year Storm’ and ‘10-Year Hurricane’ conditions respectively. The regular waves use an amplitude of half the maximum wave height given in the table below in conjunction with the corresponding wave period.
The ‘1-Year Storm’ and ‘Drift-Off’ waves are modelled as random seas using the Pierson-Moskowitz wave spectrum with equal area discretisation. The significant wave height and zero crossing period are used as the inputs for these waves. 100 harmonics are requested and the default values are used for the rest of the discretisation parameters.
Wave Data
Parameter |
|
1-Year Storm |
10-Year Hurricane |
Drift-Off |
Maximum Wave Height |
(ft) |
29.0 |
45.0 |
‑ |
Period for Hmax |
(s) |
9.0 |
10.4 |
‑ |
Significant Wave Height, Hs |
(ft) |
16.0 |
26.4 |
6.0 |
Zero Crossing Period, Tz |
(s) |
6.5 |
11.9 |
4.0 |
Direction |
(o) |
0.0 |
0.0 |
130.0 |