| 卿正阳,薛宏程,陈 明,崔诗豪.通航隧洞内船舶通航数值模拟*[J].水运工程,2024,(10):63-68 |
| 通航隧洞内船舶通航数值模拟* |
| Numerical simulation of ship navigation in navigation tunnels |
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| DOI： |
| 中文关键词: 通航隧洞 船舶水动力 下沉量 数值模拟 断面系数 |
| 英文关键词:navigation tunnel ship hydrodynamics sinking volume numerical simulation section modulus |
| 基金项目:国家重点研发计划项目（2023YFC3206104）；
重庆市自然科学基金面上项目（CSTB2023NSCQ-MSX0767） |
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| 中文摘要: |
| 通航隧洞可实现高山峡谷条件下通航建筑物间的有效衔接，但隧洞断面尺寸与船舶航速、航行阻力、下沉量等船舶航行特性具有高度的相关性，是一个多目标优化问题。采用RNG k-ε湍流模型与GMO运动模型对1 000吨级船舶在通航隧洞内的运动过程开展三维数值模拟，分析隧洞内水力特性的时空变化规律，探讨船舶行驶速度与隧洞宽度对船行波、横向流速、船舶阻力及下沉量的影响，并给出通航隧洞断面系数与船舶下沉量之间的经验公式。研究结果表明，当隧洞内航深为5 m、船舶行驶速度小于1.5 m/s、隧洞宽度大于18 m时，船首孤立波波幅、船舶两侧最大横向流速、船舶阻力和下沉量均有明显改善。此外，研究还发现船舶下沉量与通航隧洞断面系数成反比关系，通航隧洞断面系数越小船舶下沉量越大，且通航水深相较于隧洞宽度对于船舶下沉量的影响更为显著。研究结果可为1 000吨级船舶通航隧洞断面及航行关键参数设计提供参考。 |
| 英文摘要: |
| Navigation tunnels can achieve effective connections between navigable buildings under alpine canyon conditions,but the cross-sectional scale of the tunnel is highly correlated with ship navigation characteristics such as ship speed,navigation resistance,and sinking volume,posing a multi-objective optimization problem.This paper uses the RNG k-ε turbulence model and the GMO motion model to perform three-dimensional numerical simulations of the movement process of the 1,000-ton ships in a navigation tunnel,analyzes the spatial-temporal changes of various hydraulic characteristics in the tunnel,explores the effects of the ship’s driving speed and tunnel width on the ship’s traveling wave,lateral flow rate,ship resistance and sinking volume,and presents an empirical formula between the cross-sectional coefficient of the navigation tunnel and the ship’s sinking capacity.The research results show that when the depth of navigation in the tunnel is 5 m,the ship’s driving speed is less than 1.5 m/s,and the tunnel width is greater than 18 m,the solitary wave amplitude of the bow,ship resistance,maximum lateral flow rate and sinking value on both sides of the ship improve markedly.Furthermore,the study also finds an inversely proportional relationship between the ship’s sinking volume and the cross-sectional coefficient of the navigation tunnel.The smaller the navigation tunnel section coefficient,the greater the ship sinks,Moreover,the navigational water depth exhibits a more pronounced impact on the vessel’s sinking volume compared to the width of the tunnel.The research results can provide reference for the design of navigation tunnel sections and key navigation parameters for the 1，000- ton ships. |
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