本文選題：海岸工程　切入點：港灣振蕩　出處：《哈爾濱工程大學學報》2017年08期

【摘要】：為了研究海嘯波誘發(fā)的瞬變港灣振蕩問題,本文采用一組完全非線性Boussinesq模型,模擬了由波峰在前和波谷在前的兩種類型的等邊N波入射誘發(fā)的狹長矩形港內(nèi)的瞬變港灣振蕩現(xiàn)象�；谡荒B(tài)分解法,定量分離了港內(nèi)不同共振模態(tài)的響應幅值,并系統(tǒng)研究了入射N波類型和入射波波幅對港內(nèi)相對波能分布的影響。研究表明:在本文所研究的特定港口和入射波波幅范圍內(nèi),當入射波波幅較小時,以上兩種類型N波誘發(fā)的港內(nèi)相對波能分布幾乎完全相同,并且波能幾乎都集中在最低的幾個共振模態(tài)上。隨著入射波波幅的增大,分布于更高模態(tài)上的波能的比重增加,港內(nèi)波能的分布趨于均勻,并且占有最大波能的共振模態(tài)逐漸由較低的模態(tài)向較高的模態(tài)轉(zhuǎn)移。相比于波峰在前的等邊N波,波谷在前的等邊N波誘發(fā)的港內(nèi)波能分布得更加均勻。
[Abstract]:In order to study the transient harbour oscillation induced by tsunami wave, a set of completely nonlinear Boussinesq models are used in this paper. The transient harbour oscillation in a long and narrow rectangular port induced by two types of equilateral N waves with peak in front and front of trough is simulated. Based on the orthogonal mode decomposition method, the response amplitudes of different resonant modes in the harbour are quantitatively separated. The influence of the type of incident N wave and the amplitude of incident wave on the distribution of relative wave energy in port is studied systematically. The results show that in the specific port and the range of incident wave amplitude studied in this paper, when the incident wave amplitude is small, The distribution of the relative wave energy in the harbour induced by the above two types of N waves is almost identical, and the wave energy is almost concentrated in the lowest resonance modes. With the increase of the amplitude of the incident wave, the proportion of the wave energy distributed in the higher modes increases. The distribution of wave energy in the port tends to be uniform, and the resonance mode which occupies the maximum wave energy gradually shifts from the lower mode to the higher mode, compared with the equilateral N wave in front of the wave peak, The distribution of wave energy in port induced by N wave in front equilateral is more uniform.
【作者單位】： 江蘇科技大學船舶與海洋工程學院;江蘇科技大學江蘇省船舶先進設計制造技術(shù)重點實驗室;大連理工大學船舶工程學院;
【基金】：國家自然科學基金項目(51609108) 江蘇科技大學江蘇省船舶先進設計制造技術(shù)重點實驗室開放研究基金項目(CJ1504)
【分類號】：U652.3

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