Verification method for silt coast wave-induced current numerical simulation

Abstract

The invention relates to a verification method for silt coast wave-induced current numerical simulation, and belongs to the technical field of offshore water dynamic simulation and verification. The verification method for silt coast wave-induced current numerical simulation comprises the following steps of respectively building a Deflt3D wave-induced current calculation model and an ROMS wave-induced current calculation model; respectively calibrating and verifying the applicability of the Deflt3D wave-induced current calculation model and the applicability of the ROMS wave-induced current calculation model; comparing and analyzing commonness and differences of simulations results of the Deflt3D wave-induced current calculation model and the ROMS wave-induced current calculation model, and utilizing a comparison method for verifying calculated results of the models. The verification method has the advantages that on the current condition that silt coast wave-induced current lacks measured data and cannot verify the models, the model comparison verification method is provided, the method is reasonable and feasible, and the defect of lack of measured data of the silt coast wave-induced current can be overcome.

Description

technical field [0001] The invention relates to a method for verifying numerical simulation of muddy coastal wave generation current, belonging to the technical field of offshore seawater dynamic simulation and verification. Background technique [0002] The muddy coast is an important part of my country's mainland coast, with a length of more than 4,000 kilometers, accounting for about 22% of the total length of the coastline. It is mainly distributed in Liaodong Bay, Bohai Bay, Laizhou Bay, and the Subei Plain coast of the Yellow Sea. In the muddy coastal area, many important ports have been built, such as Tianjin Xingang Port and Lianyungang Port. At present, with the introduction of the strategy of "shallow water and deep use" in my country's seaport construction, many large-scale port projects on muddy coasts have been launched one after another. At the same time, many old ports that have been built have also been expanded accordingly, resulting in a huge amount of engi...

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Problems solved by technology

First of all, the muddy coast is flat, and the slope is generally 1 / 2000-1 / 500, so it is very difficult to conduct scale physical model research in the laboratory; secondly, under the condition of gentle beach, the wave deformation along the way is weak , under normal weather conditions, the wave-induced currents on muddy coasts are weak and difficult to observe, and it is difficult to measure on-site under strong wind and waves because of the danger of going to sea; finally, for muddy coasts similar to Lianyungang waters, the proportion The proportion is close to 70%, that is to say, the strong wind is basically accompanied by big waves, and the measured flow velocity includes tidal current, aeolian current and wave-induced current. Currently, there is no way to separate the wave-induced current from the measured data

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