Develop the Meshfree Numerical Method for the Fluid-Structure Interaction with Underwater Explosion

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簡歷

基本資料

Project title

Code/計畫編號

MOST104-2221-E019-046

Translated Name/計畫中文名

發展無網格數值方法用於水下爆破之流固耦合問題

Project Coordinator/計畫主持人

Pai-Chen Guan

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Systems Engineering and Naval Architecture

Website

https://www.grb.gov.tw/search/planDetail?id=11580832

Year

2015

Start date/計畫起

01-08-2015

Expected Completion/計畫迄

01-07-2016

Bugetid/研究經費

631千元

ResearchField/研究領域

機械工程

"近年來面臨氣候變遷、船舶設計概念更新、船體大型化與國艦國造等新議題的產生，一般常用之設計法規已不敷使用。另外，國內在近年來雖然對結構、水下震波有進行研究與分析，但都受限於商用軟體功能有限且價格過高。本計畫為延續近兩年針對無網格法用於流固耦合之研究，希望在一般自由液面波浪對結構影響之分析完成後，繼續朝向水中極端情形之分析前進。本年主要目標訂為利用無網格法模擬水中爆破造成的shock wave 對水中或海上結構物之影響。本研究基於再生核質點法所發展的非線性固體、自由液面流體力學模型所形成的流固耦合模型，增加non-oscillating Reproducing Kernel Particle 之概念，用以模擬水中不連續波傳、二相流、空化與能量傳遞之行為，並探討對水中結構物損壞之影響。目前已發展之流固耦合無網格法程式，已經可以處理自由液面波擊、結構非線性行為、材料破壞、滑動、碰撞等問題。 " "In the recent years, new issues are found in the area of naval architecture, such as climate change, innovation of ship design, and the construction of large ship and the naval vessels. The general design code is no longer applicable for the new generation of naval architectures. On the other hand, researches regarding the structural analysis and underwater shock modeling are limited by the ability and price of commercial programs. This research project is set out to develop a numerical program for the analysis of fluid-structure interaction under underwater explosion conditions. Our research group has accomplished the meshfree method for the nonlinear structural analysis and the free-surface flow and slamming analysis in the previous projects. Therefore, this research is planning to combine the nonlinear structural analysis code and free-surface flow code. To model the shock wave propagation, we proposed the non-oscillating Reproducing Kernel Particle Method to eliminate the numerical oscillation and achieve high order of accuracy. The developed code can model discontinuous wave propagation, two phase plow, cavitation and structural damage during the underwater explosion. "

DSpace CRIS

Develop the Meshfree Numerical Method for the Fluid-Structure Interaction with Underwater Explosion

基本資料

Description