引航道口门区通航水流条件的研究

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1、摘要引航道口门区由于斜向水流的作用，横流和回流使航行船舶产生横漂和扭转，影响通航；本文采用数值计算、结合物理模型试验，对引航道口门区通航水流条件进行研究，得到如下结论：1)本文以水深平均二维水流方程理论基础，采用FEM方法对方程进行数值计算，用该数模对水槽概化模型进行数值模拟，通过计算成果与物模试验数据对比分析，得到误差在±0．05m／s以内，满足精度要求。该数学模型的特点：一是适合模拟范围长，边界条件相对复杂的河流；二是计算速度快、精度高。2)在用二维有限元方法数值模拟实际工程实验中；揭示了在不同枢纽运行工况下，下引航道口门区水流条件的特点；同时提出了改善措施。3)实验证

2、明，物理试验结果与数值计算结果基本吻合；物理模型有效的验证了该数学模型在实际工程中应用的价值，建议在宽浅河流的数值模拟中推广应用。关键词：引航道口门区；有限单元法；通航水流条件；数值模拟；物理模型试验；ABSTRACTABSTRACTThispaperstudyonnavigationinapproachchannel．whendynamicwatermeetstaticwater，therearespiralflowandspiralvortexinapproachchannel．Inthisreport，inconsultingagreatdealofdomestica

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