An experimental study on runup of two solitary waves on plane beaches  

作　　者：宣瑞韬 吴卫 刘桦 

机构地区：[1]School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University [2]School of Naval Architecture, Ocean and Civil Engineering and MOE Key Laboratory of Hydrodynamics, Shanghai Jiao Tong University

出　　处：《Journal of Hydrodynamics》2013年第2期317-320,共4页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.10972138);the Natural Science Foundation of Shanghai Municipality(Grant No.11ZR1418200)

摘　　要：Experiments of the runup of two solitary waves on a plane beach are carded out in a wave flume. The two solitary waves with the same amplitude and the crest separating distances are generated by using an improved wave generation method. It is found that, with regard to the two solitary waves with same wave amplitude, the runup amplification of the second wave is less than that of the first wave if the relative crest separating distance is reduced to a certain threshold value. The rundown of the first solitary wave depresses the maximtlm runup of the second wave, If the leading solitary wave is of relatively smaller amplitude for the two solitary waves, the runup amplification is affected by the overtaking process of two solitary waves. It turns out that the runup amplification of the second wave is larger than that of the first wave if the similarity factor is approximately larger than 15, which means the larger wave overtakes the smaller one before the waves runup on a beach.Experiments of the runup of two solitary waves on a plane beach are carded out in a wave flume. The two solitary waves with the same amplitude and the crest separating distances are generated by using an improved wave generation method. It is found that, with regard to the two solitary waves with same wave amplitude, the runup amplification of the second wave is less than that of the first wave if the relative crest separating distance is reduced to a certain threshold value. The rundown of the first solitary wave depresses the maximtlm runup of the second wave, If the leading solitary wave is of relatively smaller amplitude for the two solitary waves, the runup amplification is affected by the overtaking process of two solitary waves. It turns out that the runup amplification of the second wave is larger than that of the first wave if the similarity factor is approximately larger than 15, which means the larger wave overtakes the smaller one before the waves runup on a beach.

关 键 词：solitary wave RUNUP BEACH multiple solitary waves EXPERIMENT 

分 类 号：P731.2[天文地球—海洋科学]