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升船机承船厢水动力特性实验研究(顾正华)

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t0ow)`)l-c7oP8A:O0【作者】顾正华 【导师】包纲鉴; 宣国祥水利论文J k+I NMt#g;cN#QC
【作者基本信息】南京水利科学研究院,水力学及河流动力学,2000年,硕士水利论文*T GRj#la/aC

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c OH-S S0【中文摘要】 本文对升船机承船厢卧倒门在不同工作方式下,影响厢内水动力特性的因素进行了分析,并运用π定理,建立了无量纲函数表达式。据此,对试验模型进行了设计。通过系列模型试验研究,得到了最大最小波高和最大纵向系缆力与各种影响因素间的变化规律,并建立了无船状态下最大最小波高计算经验公式。试验发现深宽比对最大最小波高有很大的影响,且存在峰值点,该点是狭浅水域中侧壁和浅水双重作用的典型特征。 对于有船状态下承船厢内水动力特性,作者重点研究了船舶的阻塞作用,发现船舶阻塞效应的产生是有条件的,即阻塞比存在峰值点,该点可视为划分限制性水域的下限。 作者还对卧倒门工作过程中,承船厢内船舶纵向受力进行了理论分析,在此基础上建立了船舶纵向受力数学模型,并对之进行了简化,得到其理论近似解。

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Z.Z{G%z _8G-` x0【英文摘要】 This paper analyzes the related factors of hydrodynamics of ship lift chamberunder various working conditions of the tumble gate and several dimensionless functions are established according to the π theorem. Extensive physical model testsare conducted to investigate the wave height and the maximumlongitudinal hawser force in the chamber Empirical formulas to calculate thewave height when no ship exists in the chamber are derived. Theapparent influence of depth-to-width at on the maximum/minimum wave height isfound in the experiment for the first time. The results show that due to the co-influenceof the shallow water and side wall of the restricted water,there is a criticaI depth-to-width ratio when the wave height reaches the maximum/minimum value.The block-effect of the ship is studied when the ship is moored in the chamber.The results show that the block-effect of the ship is conditional on the appropriate blockratio, and this block ratio can be used to define the restricted water.T...更多heoretical analysis is carried out to investigate the longitudinal hawser force ofthe ship in the chamber The mathematical model to calculate the longitudinal hawserforce is developed, and the theoretical approximate result is acquired according to thesimplified model.  还原

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^Yf8L;C0【中文关键词】 升船机; 承船厢; 卧倒门; 物理模型; 水动力学; 船舶; 阻塞效应; 限制性水域; 数学模型水利论文'Z5i u"t3KYH!wS
【英文关键词】 shiplift; chamber; tumblegate; physical model; hydrodynamics; ship; block-effect; restricted water; mathematical model水利论文4p OS`'r%R(H%Qn
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TAG: 实验 升船机 顾正华 水动力特性 承船厢
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