Directional spread parameter at intermediate water depth |
| |
Authors: | V Sanil Kumar M C Deo N M Anand K Ashok Kumar |
| |
Institution: | a Ocean Engineering Division, National Institute of Oceanography, Dona Paula, Goa 403 004, India;b Civil Engineering Department, Indian Institute of Technology, Bombay, India |
| |
Abstract: | The characteristics of directional spread parameters at intermediate water depth are investigated based on a cosine power ‘2s' directional spreading model. This is based on wave measurements carried out using a Datawell directional waverider buoy in 23 m water depth. An empirical equation for the frequency dependent directional spreading parameter is presented. Directional spreading function estimated based on the Maximum Entropy Method is compared with those obtained using a cosine power ‘2s' parameter model. A set of empirical equations relating the directional spreading parameter corresponding to the peak of wave spectrum to other wave parameters like significant wave height and period are obtained. It shows that the wave directional spreading at peak wave frequency can be related to the non-linearity parameter, which allows estimation of directional spreading without reference to wind information. |
| |
Keywords: | spreading function directional spectra maximum entropy method |
本文献已被 ScienceDirect 等数据库收录! |