Effect of steady flow potential on the ship motions in waves

Ming Chung Fang, Pei Yawn Liao

研究成果: Paper同行評審

摘要

A three-dimensional method for predicting the motions of a ship running in waves is presented. Basically the method developed here is based on the source distribution technique and the general formulations include the effect of steady flow and unsteady flow. Three algorithms are used for treating the corresponding Green functions and derivatives, i.e. (1) The Hess & Smith algorithm for the part of simple source l/r. (2) The complex plane contour integral of Shen & Farell algorithm for the Double integral of steady flow. (3) The series expansions of Telste & Noblesse algorithm for the Cauchy principal value integral of unsteady flow. The steady flow potential is especially considered in the calculations of diffraction and radiation problems, and the effects on ship motions are discussed. The results indicate that the effect of steady flow is generally small, but it still cannot be neglected in some cases especially for long waves. It is also interesting to find that the steady flow effect depends on the fore-aft configuration of the ship.

原文English
頁面621-628
頁數8
出版狀態Published - 1999 1月 1
事件Proceedings of the 1999 9th International Offshore and Polar Engineering Conference (ISOPE-99) - Brest
持續時間: 1999 5月 301999 6月 4

Conference

ConferenceProceedings of the 1999 9th International Offshore and Polar Engineering Conference (ISOPE-99)
城市Brest
期間99-05-3099-06-04

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 海洋工程
  • 機械工業

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