Analysis Of The Factors Affecting The Wave Dissipation Effect Of Vegetation

Near-shore aquatic plants represented by mangroves can effectively reduce wave energy,and their resistance to wave water makes them an effective new ecological wave elimination measure.The attenuation law of waves in the coastal vegetation zone has always been an important issue in the study of wave elimination in plants.However,the complex plant structure composed of rhizome and leaves and the multivariate data structure make it impossible for traditional research methods to effectively understand the law of the factors between the waves of plants.Therefore,it is of great significance to use reasonable methods to analyze the influence factors of wave elimination in plant belt for laying out revetment projects and maintaining shoreline stability.Based on the experimental data of three physical models,the wave elimination effect was characterized by the transmission coefficient,and the influence of relative wave height(Ursell number),relative model width,relative model height and volume fraction on the transmission coefficient was investigated.The factors were analyzed by multiple nonlinear regression,genetic programming and artificial neural network.The power exponential relation among the factors is obtained by using multiple nonlinear regression,the formula for calculating the transmission coefficient of each complexity is obtained by using the genetic programming method,and the performance of each parameter in the equation is analyzed,and the influence weight of each parameter is obtained by the artificial neural network.Compare three methods of analysis,the results show that genetic programming can qualitatively given the sensitivity of the parameters,the sensitivity analysis is suitable for plant wave model,provides a more effective and accurate physical interpretation and prediction method is established under different forms of plant flora of solitary wave and regular wave transmission coefficient and dimensionless parameter calculation formula of the solitary wave and regular wave case flora transmission coefficient and the internal relation between the factors and provide scientific basis for plant revetment engineering...