Numerical Simulation of Non-Gaussian Random Sea Waves (II)

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簡歷

基本資料

Project title

Code/計畫編號

NSC88-2611-E019-029

Translated Name/計畫中文名

風、波、流及其交互應用---子計畫VIII---海域非高斯隨機波浪之數值模擬(II)

Project Coordinator/計畫主持人

Deng-How Tsaur

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=463239

Year

1999

Start date/計畫起

01-08-1998

Expected Completion/計畫迄

31-07-1999

Bugetid/研究經費

270千元

ResearchField/研究領域

海洋科學

本報告主要是根據Xu等人所提出的群波模擬法,發展出一套電腦程式,並利用此一電腦程式模擬出具不同群波因子之群波,並探討其波浪統計特性與群高因子(GHF)及群長因子(GLF)間之關係。而根據本報告數值模擬結果顯示其週期分布與T/sup 2/-Rayleigh分布有些差異,而H/sub max/,H/sub (1/10)/及H/sub (1/3)/等,均隨著GHF及GLF之增大而增大,不過是在GHF較大的情況下,它們受GLF之影響較大,在GHF較小的情況下,則受GLF之影響較小,而以Weibull分布去符合其波高分布時,Weibull分布的形狀因子m隨GHF變化之趨勢,與Mase的研究結果相類似,不過本文的結果顯示,形狀因子m亦會受GLF的變化影響。 The main purpose of this report is to develop computer programs in accordance with the simulations of wave groups proposed by Xu etc. We also makeuse of the computer programs to simulate different wave factors of wave groups in order to explore the relationship of statistical characteristics of wave with GHF and GLF. The result of numerical simulation in this report indicates that the distribution of wave period flatter than the T/sup 2/-Raylreigh distribution, and H/sub max/, H/sub (1/10)/ and H/sub (1/3)/ are in proportion as GHF and GLF increasing. There will be a greater influence on H/sub max/, H/sub (1/10)/ and H/sub (1/3)/when the GHF is bigger. On the other hand, there will be a smaller influence on H/sub max/, H/sub (1/10)/ and H/sub (1/3)/ when the GHF is smaller. Mase's study was similar to that of the varieties of GHF correlating with the shape factor m of Weibull distribution. The consequence of the study shows that, however, the shape factor m is also affected by the variety of GLF.

Keyword(s)

非高斯隨機波
數值模擬
群波
統計特性
Non-Gaussian random wave
Numerical simulation
Wave group
Statistic property

DSpace CRIS

Numerical Simulation of Non-Gaussian Random Sea Waves (II)

基本資料

Description