本文關(guān)鍵詞：不同側(cè)支孔布置型式下的船舶系纜力數(shù)值模擬研究　出處：《重慶交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 側(cè)支孔 輸水系統(tǒng) 數(shù)值模擬 系纜力 布置原則

【摘要】：對于閘底長廊道側(cè)支孔輸水系統(tǒng)的水動力學(xué)研究,目前主要采用物理模型試驗(yàn)和現(xiàn)場原型觀測方法,均需消耗大量的人力和物力。采用方便快捷且不受試驗(yàn)條件及尺度效應(yīng)影響的數(shù)值計(jì)算方法研究成果相對較少。通過閘室船舶系纜力數(shù)值模擬對不同側(cè)支孔布置型式下輸水系統(tǒng)水動力學(xué)特性進(jìn)行系統(tǒng)性研究,總結(jié)分析其布置原則,可為船閘閘底長廊道側(cè)支孔輸水系統(tǒng)的設(shè)計(jì)和優(yōu)化提供理論依據(jù),并為類似工程提供借鑒,具有較重要的學(xué)術(shù)價(jià)值和實(shí)際意義。本文基于典型閘底長廊道分散式輸水系統(tǒng),選擇代表船型,建立“船舶—水流”耦合動力響應(yīng)的三維數(shù)學(xué)模型,采用三維紊流模擬方法、動網(wǎng)格技術(shù)以及閘室船舶系纜力并行計(jì)算程序,借助fluent軟件對不同側(cè)支孔布置型式下的閘室船舶系纜力進(jìn)行數(shù)值模擬計(jì)算,主要研究內(nèi)容及成果如下:1、基于某依托工程,建立三維船閘整體模型,進(jìn)行船舶系纜力研究,并通過模擬結(jié)果與工程實(shí)測數(shù)據(jù)對比分析,很好地驗(yàn)證了數(shù)值模型與計(jì)算方法的正確性,為后文不同側(cè)支孔布置型式的水動力學(xué)特性研究奠定了基礎(chǔ)。2、采用三維紊流模擬方法和動網(wǎng)格技術(shù),研究船閘輸水初期不同側(cè)支孔布置型式下的船舶系纜力,發(fā)現(xiàn)側(cè)支孔型式的改變對縱向系纜力影響較小,對橫向系纜力影響較大的一般規(guī)律。3、通過對船舶系纜力和特征斷面的水動力特性分析,得到閘底長廊道分散式輸水系統(tǒng)布置型式下,側(cè)支孔的一般布置原則:①沿水流方向,側(cè)支孔從大到小排列能取得更好的分流效果;②側(cè)支孔高寬取值較接近時(shí),支孔出流消能效果較好;③閘室有效尺度確定后,側(cè)支孔個(gè)數(shù)選擇存在一個(gè)“最優(yōu)值”。
[Abstract]:The hydrodynamics of the lock bottom long culvert side hole water system, the main use of the physical model test and prototype observation method, are required to consume a large amount of manpower and material resources. By numerical convenience and is not affected by the experimental conditions and scale effect calculation method of relatively small research. Through the ship mooring force a systematic study on hydrodynamic characteristics of water system of different side hole layout types of numerical simulation, analyzed the layout principle, can provide a theoretical basis for the design and optimization of lock bottom long culvert side hole of water conveyance system, and provide the reference for the similar engineering, has important academic value and practical significance. In this paper, the typical lock bottom long corridor of decentralized water system based on the selection of ships, the establishment of a "three-dimensional mathematical model of ship - flow" coupled dynamic response, the 3D turbulent flow model This method, dynamic mesh technology and ship mooring force parallel calculation program, using FLUENT software to simulate the ship mooring force under different side hole layout, the main research contents and results are as follows: 1, based on a certain project, a three-dimensional model of the whole ship, the ship mooring force. Analysis and comparison of measured data through simulation results and engineering, has confirmed the correctness of the numerical model and calculation method, laid the foundation for.2 research on hydrodynamic characteristics of the different branch hole pattern, using three-dimensional turbulence simulation method and dynamic mesh technique, different side hole layout types of ship mooring early research found shiplock collateral hole type change has little effect on the vertical mooring force,.3 general rule of great influence on horizontal mooring force, the ship mooring force and the characteristics of fault Analysis of dynamic characteristics of water surface, get the lock bottom long corridor of decentralized water supply system arrangement, the principle of the general layout of the side hole along the flow direction, side hole is arranged from large to small can achieve better effect of shunt; the collateral value is close to the hole width, branch orifice energy dissipation effect is better; the the effective size is determined, the number of side hole choice there is an "optimum".

【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U641.32

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本文編號：1387552