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首页> 外文期刊>Proceedings of the International Conference on Coastal Engineering >CALCULATION OF ON-OFFSHORE SAND MOVEMENT AND WAVE DEFORMATION ON TWO-DIMENSIONAL WAVE-CURRENT COEXISTENT SYSTEM
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CALCULATION OF ON-OFFSHORE SAND MOVEMENT AND WAVE DEFORMATION ON TWO-DIMENSIONAL WAVE-CURRENT COEXISTENT SYSTEM

机译：二维波流共存系统的离岸砂运动和波变形计算

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摘要

In this paper, we proposed a method of calculation to predict quantitatively the on-offshore sand movement and the wave deformation on a wave-current coexistent system by assuming a river mouth. And the calculated results were compared with the experimental data obtained for the coexistent system in a twodimensional wave tank. The distribution of wave height on the breaker zone was analyzed by use of BORE MODEL. It was required for the calculation of the sand transport rate. The model was established on the assumption that the value of energy loss in a breaking wave was equivalent to that of bore. The wave height distribution on the offshore side of breaking point was presumed employing the third order approximate solution of Stokian wave on the coexistent system. The breaking point was obtained by use of Miche's criteria equation. The local sand transport rate could be calculated by use of POWER MODEL. The predominant direction of sand drift was recognized using relations for judgement which were derived from the experimental results. The transformation of sea bottom and river one was estimated on the basis of the calculated distributions of the wave height and the sand transport rate. The results obtained by this analytical method agreed well with the experimental results.
机译：在本文中，我们提出了一种计算方法，通过假设河口，定量地预测了波流共存系统上的近海砂运动和波变形。并将计算结果与在二维波箱中共存系统获得的实验数据进行比较。利用BORE模型分析了破碎带上的波高分布。计算砂子输送速度是必需的。该模型是基于这样的假设而建立的：断波中的能量损失值等于钻孔的能量损失值。在共存系统上采用斯托克波的三阶近似解来推定断裂点近海侧的波高分布。断裂点是通过使用Miche的标准方程式获得的。可以使用POWER MODEL计算当地的砂运量。利用从实验结果得出的判断关系，可以识别出砂粒漂移的主要方向。根据计算出的波高和输沙速度分布，估算了海底和河流一号的转换。通过这种分析方法获得的结果与实验结果非常吻合。

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