基于脉冲响应函数的二维波浪确定性预报研究

Research on Two-Dimensional Wave Deterministic Prediction Based on Impulse Response Function

确定性波浪预报研究可对波浪进行实时准确快速的预报,对海上作业决策、危险状况规避等起到关键作用。该文采用脉冲响应函数法建立了一套确定性波浪预报方法,提出了不同水深条件下的频率脉冲响应函数:针对浅水和深水条件,推导得到脉冲响应函数理论解;针对有限水深,通过数值方法求解。同时,开展了物理试验,对确定性波浪预报的准确性进行验证性分析。结果表明:在不同水深条件下,预报系统都具有较好的预报效果。

The study of deterministic wave forecasting can provide real-time,accurate,and rapid wave prediction,playing a crucial role in decision-making for offshore operations and avoiding dangerous situations.In this paper,a deterministic wave prediction method is established using the impulse response function method,and the frequency impulse response functions are proposed under different water depth conditions.The theoretical solution of the impulse response function is derived for shallow and deep water conditions,and numerical methods are used to solve for finite water depth.And physical experiments are conducted to verify the accuracy of deterministic wave prediction.The results show that the prediction system has good forecasting effects under different water depth conditions.