A Study of Numerical Simulation of Nearshore Breaking Wave Model(I)

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簡歷

基本資料

Project title

Code/計畫編號

NSC97-2623-7006-011-D

Translated Name/計畫中文名

近岸激浪及潮位數值模式之研究(I)

Project Coordinator/計畫主持人

Tai-Wen Hsu

Funding Organization/主管機關

National Science and Technology Center for Disaster Reduction

Co-Investigator(s)/共同執行人

溫志中

Department/Unit

Department of Hydraulic and Ocean Engineering,NCKU

Website

https://www.grb.gov.tw/search/planDetail?id=1586520

Year

2008

Start date/計畫起

01-01-2008

Expected Completion/計畫迄

31-12-2008

Bugetid/研究經費

997千元

ResearchField/研究領域

海洋科學

由於全球科技的快速發展，海軍設備為符合戰爭需求，軍事戰備導向高科技及電子化的應用是時代的趨勢。在實施各類型海上作戰任務時，海戰區域的範圍甚大，海戰環境的影響需要精確的評估與預報。在登陸作戰時，波形因淺化與折射而產生激浪，此種波浪影響登陸艦艇之安定與操作，故近岸激浪的預報應達到作業化的精確預估，以減低軍事行動可能發生的不確定性。本計畫目的為建立台灣環島沿岸之近岸激浪預報模式，以整合海軍氣象中心之波浪預報作業，完成從深海到淺海波浪預測報模式的建立。本計畫其分三年進行。第一年度為建立適用台灣環島之近岸激浪預測模式，選擇適當地點評估模式之適用範圍與準確度。本計畫使用延伸型緩坡方程式結合拉格倫基系統描述激浪波形。第二年度則是建立模式預報流程，依據激浪模式之適用性，進行參數最佳化的調整，以增強模式預報能力。第三年度目標為建立沿岸之激浪預測，並整合三年計畫成果，完成台灣環島海域之激浪預報模式。 Owing to the recent high technology development, the naval battle region is spreading quickly and widely. Therefore, in order to prevent the warfare mistakes from complicated environment, it is required to estimate accurately the sea conditions for battle ship operations. The present study is to carry out as an extensive 3-year project. The establishment of an operational numerical nearshore breaking wave model that fits the requirements of the naval battle conditions is the major purpose of this research. In the first year, a numerical wave model is developed for the nearshore breaking wave simulation within the surf zone. The lagranging system is employed for describing the wave profile after wave breaking. In the second year, The comparison is made to validate the usefulness of the model using both simulated results and the observational data. It is desirable to increase the accuracy and efficiency of the forecast of the nearshore breaking wave model by testing key parameters. In the last year, an efficient operational procedure for the forecast of the nearshore wave model will be demonstrated established. The finer grids in the numerical simulation will particularly be used to enhance the ability of the forecast system.

Keyword(s)

激浪模式
拉格倫基系統
近岸激浪預報
nearshore breaking wave model
lagranging system
forecastnearshore wave

DSpace CRIS

A Study of Numerical Simulation of Nearshore Breaking Wave Model(I)

基本資料

Description