EFFECTS OF DIFFERENT WAVE SPECTRA ON DYNAMIC POSITIONING ACCURACY

Xinkuan Yan; Chaohe Chen; Tianhui Fan

doi:10.21278/brod69206

Brodogradnja (Jan 2018)

EFFECTS OF DIFFERENT WAVE SPECTRA ON DYNAMIC POSITIONING ACCURACY

Xinkuan Yan,
Chaohe Chen,
Tianhui Fan

Affiliations

Xinkuan Yan: School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Chaohe Chen: School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Tianhui Fan: School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China

DOI: https://doi.org/10.21278/brod69206
Journal volume & issue: Vol. 69, no. 2
pp. 83 – 92

Abstract

Read online

To achieve high accuracy of positioning method for ships which have good mobility and are uninfluenced by the water depth, the dynamic positioning system has come into being. More and more ships working in deepwater area tend to install dynamic positioning system. The main objective of this study is to discuss the effects of different wave spectra on the dynamic positioning accuracy. First, considering some parameters of a certain dynamic positioning ship, the Response Amplitude Operator (RAO) is calculated by AQWA. Then, time domain simulations and calculations for the ship motion have been conducted by OrcaFlex based on JONSWAP, ISSC, Ochi-Hubble, Torsethaugen and Gaussian Swell, respectively. Finally, the analysis results are compared to discuss the dynamic positioning accuracy. Some useful conclusions and recommendations are obtained to lay a theoretical foundation of actual project practice.

Published in Brodogradnja

ISSN: 0007-215X (Print); 1845-5859 (Online)
Publisher: Faculty of Mechanical Engineering and Naval Architecture
Country of publisher: Croatia
LCC subjects: Naval Science: Naval architecture. Shipbuilding. Marine engineering
Website: http://www.fsb.hr/brodogradnja

About the journal