Calculation method for interaction of waves and arc-shaped plate type groyne

Abstract

The invention provides a calculation method for interaction of waves and an arc-shaped plate type groyne. According to the method, pressure-implicit with splitting of operators (PISO algorithm) is implemented, a prediction step and two modification steps are carried out, pressure is adjusted through iteration, then an internal fluid unit meets continuous equations, a free surface unit meets free surface power boundary conditions, and meanwhile a speed field is adjusted; compared with a conventional calculation method for interaction of the waves and the arc-shaped plate type groyne, the calculation method has the advantages that the calculation efficiency is high and value results are relatively approximate to physical practice since a speed field is modified by using the PISO algorithm, variable information is arranged based on alternative grids, and interaction of the waves and the arc-shaped plate type groyne is simulated by using a virtual boundary force method through central difference method discrete control equations.

Description

Technical field:

[0001] The invention relates to the technical field of breakwaters, in particular to a calculation method for the interaction between waves and arc-plate breakwaters; the invention can be used for force calculation of irregular marine engineering structures such as cylinders, ocean platforms and semicircular breakwaters. Background technique:

[0002] Because the vast and mysterious ocean not only has considerable fishery resources, but also has abundant oil, gas and mineral resources. On the other hand, due to the increasing shortage of land resources, large-scale marine projects such as artificial islands and sea airports are increasing year by year. Undoubtedly, the ocean will become another important space for human existence. In the process of marine development and utilization, it is inevitable to build a lot of basic protection facilities. Breakwater, as an extremely important protective structure, plays an important role in maintaining the stabilit...

Examples

Embodiment 1

[0083] Example 1, see figure 1 , 2 , 3, 4, the first step is to generate a rectangular grid in the calculation area, and set the initial value of the flow field;

[0084] In the second step, the governing equations of the calculation method include the Reynolds time-average N-S equations and the K-ε turbulence model; the Reynolds time-average N-S equations include the time-average momentum equation 1 in the horizontal direction and the vertical direction of the virtual boundary force item Time-averaged momentum equation 2 and continuity equation 3; the K-ε turbulence model is composed of K equation 4 and ε equation 5;

[0085]

[0086]

[0087]

[0088]

[0089]

[0090] Among them, u is the velocity component in the x direction, v is the velocity component in the y direction, t is the calculation time, g x is the gravitational acceleration in the horizontal direction, the value is zero, g y is the gravitational acceleration in the vertical direction, the va...

Technical field:

[0001] The invention relates to the technical field of breakwaters, in particular to a calculation method for the interaction between waves and arc-plate breakwaters; the invention can be used for force calculation of irregular marine engineering structures such as cylinders, ocean platforms and semicircular breakwaters. Background technique:

[0002] Because the vast and mysterious ocean not only has considerable fishery resources, but also has abundant oil, gas and mineral resources. On the other hand, due to the increasing shortage of land resources, large-scale marine projects such as artificial islands and sea airports are increasing year by year. Undoubtedly, the ocean will become another important space for human existence. In the process of marine development and utilization, it is inevitable to build a lot of basic protection facilities. Breakwater, as an extremely important protective structure, plays an important role in maintaining the stabilit...

Examples

Embodiment 1

[0083] Example 1, see figure 1 , 2 , 3, 4, the first step is to generate a rectangular grid in the calculation area, and set the initial value of the flow field;

[0084] In the second step, the governing equations of the calculation method include the Reynolds time-average N-S equations and the K-ε turbulence model; the Reynolds time-average N-S equations include the time-average momentum equation 1 in the horizontal direction and the vertical direction of the virtual boundary force item Time-averaged momentum equation 2 and continuity equation 3; the K-ε turbulence model is composed of K equation 4 and ε equation 5;

[0085]

[0086]

[0087]

[0088]

[0089]

[0090] Among them, u is the velocity component in the x direction, v is the velocity component in the y direction, t is the calculation time, g x is the gravitational acceleration in the horizontal direction, the value is zero, g y is the gravitational acceleration in the vertical direction, the va...

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