潮流物理模型试验生潮控制时的复合模拟数据对接

Data Interface of Hybrid Model for Tide-generation Controlling During Physical Simulation of Tidal Current

根据几种不同情形探讨复合模拟中如何通过数值模拟为潮流物模试验提供开边界控制条件。对单边界物理模型,可由数模的调和常数得到物模边界控制所需的时间序列数据,实现单分潮、多分潮及大、中、小潮的模拟;对于历时较长的试验,可由数模得到长时间序列或周期性序列数据作为生潮的控制信号;对多边界模型,沿边界分为若干控制断面,由数模给出各断面的流量变化,对各断面分别进行流量控制;差时的复合模拟可使物理模型和数值模型互相提供边界条件或模型参数修正。

According to the following cases in hybrid model,this paper examines how to provide open boundary controlling conditions for physical simulation of tidal process by means of numerical simulation.Firstly,for the physical models with only one boundary,harmonic constants obtained from numerical simulation are used to derive time-series data as boundary signals for experiment controlling,and physical simulation will be achieved for a single tidal constituent or several ones,and for the spring,moderate or neap tides.Secondly,for a case of a long-period experiment,a numerically modeled data sequence in longtime or in recycle can be set as an interface input for the tide-make controlling.Thirdly,for the physical model with several open boundaries,more sections are usually defined for boundary controlling by giving water fluxes along the sections from numerical modeling.As a last case,the hybrid model with a time-gap between numerical and physical simulation executions are used to provide boundary conditions or revise model parameters each other.