Adi Surya Pria Pranata, Novi Andhi Setyo Purwono, Ary Sismiani
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摘要

本研究是建立了透水和不透水两种腹沟的数学模型,其长度和距离随腹沟的变化而变化;50米,100米,150米,200米。利用Chen物理模拟研究的数据进行了模拟。, et al ., 2003,并使用2D Boussinesq软件作为数学模型模拟的输入。研究结果表明:双透水沟距的变化模式对岸线流速的影响较大,50米双透水沟平均降低59.21%,100米双透水沟平均降低76.02%,150米双透水沟平均降低79.50%,200米双透水沟平均降低80.49%。50米不透水腹股沟对岸线流速降低57.42%,100米降低84.61%,88.89米降低150%,200米降低89.91%。由于腹股沟与另一腹股沟之间的距离变化,使得较长的可渗透或不渗透腹股沟对冲浪带沿岸的岸流速度降低产生影响,加上岸流,岸流速度降低幅度可达20%。透水和不透水腹沟对沿岸岸流速度的影响在超过冲浪带的长期腹沟区域并不明显,平均减少幅度可达5%。岸流速度在岸沟长度的2.4倍处接近现有条件下的岸流速度。腹股沟之间的距离太近,如果我们比较长腹股沟导致当前的运动方向向海(离岸流)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analisa Model Matematik Arus Sejajar Pantai Pada Groin Seri Permeable
This research is the mathematical model has been made with two groins, permeable and impermeable groins, with the variation is in length and distance; 50 meters, 100 meters, 150 meters and 200 meters. A modelling has been done by using the data of physical modeling study by Chen., et al, 2003, and used as input to the simulation of mathematical models using 2D Boussinesq software.Results of the research showed the influence of variation model long distance between the groins, the reduction of longshore current velocity along the coast with an average 59.21% reduction for the double permeable groin with 50 meters long, 76.02% for 100 meters, 79.50% for 150 meters, 80.49% for 200 meters. The reduction of longshore current velocity along the coast are 57.42% for an impermeable groin groin double with 50 meters, 84.61% for 100 meters, 150% for 88.89 meters, and 89.91% for 200 meters. The distance variation between one groin to the other groin has a result that a longer permeable or impermeable groin affects the reduction longshore current velocity along the coast of the Surf Zone with the addition of longshore current velocity reduction occurs along the coast up to 20%. Reduction of longshore current velocity along the coast by the permeable and impermeable groin Permeable and impermeable groins has not been significantly occured in the long-term groin area exceeding Surf zone with an average additional reduction up to 5%. The longshore current velocity approaching the speed of currents along the coast for the existing conditions at a distance up to 2.4 times of length of groins. And the distance between the groins are too close if we compare to the long groins causing the current direction of movement towards the sea (rip Current). 
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