本文關(guān)鍵詞：船舶沿岸航行水動力數(shù)值研究　出處：《上海交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 船舶操縱 限制水域 岸壁效應(yīng) 斜航 水動力

【摘要】：船舶在限制航道沿岸壁航行時會受到岸壁效應(yīng)的影響，表現(xiàn)為岸壁的限制作用影響船體繞流場并進而改變船體受力。岸壁效應(yīng)會使得船舶在航行中具有橫移及轉(zhuǎn)首的運動趨勢，如果不采取合理的操縱措施，可能會使得船舶有撞岸、觸底或船-船相撞的危險。故研究船舶沿岸航行水動力具有重要的意義。 本文采用基于RANS方程求解的數(shù)值方法模擬船舶沿岸航行的粘性繞流場，，其中湍流現(xiàn)象采用SST k-ω模型模擬，自由面興波現(xiàn)象采用VOF方法模擬。文中首先通過模擬直航及斜航試驗來驗證模擬方法的可靠性，所考察內(nèi)容包括迭代收斂性、網(wǎng)格尺度收斂性以及計算結(jié)果相對試驗值的誤差。隨后論文應(yīng)用此數(shù)值方法分別模擬了船舶沿岸直航和沿岸斜航兩種情況下的船體繞流場，并通過分析船體受力和流場細(xì)節(jié)討論了船體沿岸航行的水動力產(chǎn)生機理。同時，論文還對船-岸間距、漂角、水深和岸壁傾斜角對船體沿岸航行水動力的影響規(guī)律做了分析，并對船舶在限制水域中的操縱策略提出了建議。 本文所采用的數(shù)值方法能夠較為合理地模擬在限制水域中航行船舶的粘性自由面繞流。所得到的關(guān)于船舶沿岸直航岸壁效應(yīng)以及斜航水動力機理的分析結(jié)論對相關(guān)研究具有一定的參考價值。同時，文中對不同因素對船舶水動力影響規(guī)律的總結(jié)以及所提出的船舶沿岸航行操縱策略的建議可以為航道設(shè)計人員和船舶駕駛者提供一定的參考。
[Abstract]:The ship will be affected by the effect of the shoreline when it restricts the navigation of the coastal wall of the channel. The effect of the bank wall will influence the flow field around the ship and then change the force on the ship. The shoreline effect will make the ship have the moving trend of transverse movement and turn head in the course of navigation if no reasonable handling measures are taken. It may cause the ship to collide with the shore, hit the bottom or collide with the ship. Therefore, it is of great significance to study the hydrodynamic forces of the ship's navigation along the coast. In this paper, a numerical method based on RANS equation is used to simulate the viscous flow field along the coast of a ship, and the turbulent phenomena are simulated by SST k- 蠅 model. The VOF method is used to simulate the wave-making phenomenon on the free surface. Firstly, the reliability of the simulation method is verified by simulating the direct and oblique navigation tests, including the iterative convergence. The convergence of the grid scale and the error of the calculated results relative to the experimental values. Then, the paper uses this numerical method to simulate the hull flow field in the case of the direct and oblique navigation of the ship along the coast, respectively. The hydrodynamic mechanism of the ship sailing along the coast is discussed by analyzing the stress and flow field of the ship. At the same time, the ship shore spacing and drift angle are also discussed. The effects of water depth and slope angle of shore on the hydrodynamic forces of ship navigation along the hull coast are analyzed, and some suggestions on the maneuvering strategy of ships in restricted waters are put forward. The numerical method used in this paper can reasonably simulate the viscous free surface flow around a ship navigating in restricted waters. Relevant research has certain reference value. At the same time. In this paper, the influence of different factors on ship hydrodynamics is summarized, and the advice of ship coastal navigation maneuvering strategy is put forward, which can be used as a reference for channel designers and ship drivers.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U661.3

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相關(guān)期刊論文 前1條

1 ;NUMERICAL SIMULATION OF TRANSIENT FLOW AROUND A SHIP IN UNSTEADY BERTHING MOTION[J];Journal of Hydrodynamics;2009年03期

相關(guān)博士學(xué)位論文 前1條

1 王化明;限制水域操縱運動船舶粘性流場及水動力數(shù)值研究[D];上海交通大學(xué);2009年

本文編號：1390411