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Flexible vegetation motion simulation method based on nonlinearity of different waves

A motion simulation, non-linear technology, applied in climate sustainability, CAD numerical modeling, instrumentation, etc., which can solve the problems of lack and incomplete quantification of the impact of flexible vegetation motion

Pending Publication Date: 2022-08-09
SOUTHEAST UNIV
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Problems solved by technology

[0004] Previous studies were mainly limited to rigid vegetation, and there is still a lack of research on how wave nonlinearity affects the motion of flexible vegetation and the resulting wave attenuation.
Although existing studies have numerically studied the effects of wave nonlinearity on vegetation drag force and the resulting wave attenuation, the existing numerical models are mainly calculated based on linear wave theory, and rarely based on nonlinear wave theory. Research
In addition, the effects of different wave theories and characteristic wave velocity calculation methods on flexible vegetation motion and wave attenuation have not been fully quantified

Method used

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  • Flexible vegetation motion simulation method based on nonlinearity of different waves
  • Flexible vegetation motion simulation method based on nonlinearity of different waves
  • Flexible vegetation motion simulation method based on nonlinearity of different waves

Examples

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Embodiment 1

[0086] This example selects the experimental data collected by the wave tank physics experiment for research.

[0087] Based on the results of the physical model tests that have been carried out, the dynamic model of single-root flexible vegetation under the action of waves is verified. The experimental water tank is 41.5 meters long, 0.8 meters wide, and 0.9 meters deep. The experiment adopts a fixed water depth of 0.65 meters. figure 2 Comparing the calculation results of the spatial morphology model of vegetation at different times in a wave cycle with the measured data of the physical model experiment, the results show that the established dynamic model of flexible vegetation under the action of waves can better simulate the stress process of a single flexible vegetation.

[0088] In order to study the differences in the motion of a single submerged flexible vegetation under different wave nonlinear conditions, image 3 The incident wave conditions and model parameters a...

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Abstract

The invention provides a flexible vegetation motion simulation method based on nonlinearity of different waves. The method comprises the following steps: S1, establishing and verifying a flexible vegetation dynamic model under the action of the waves; s2, the characteristic wave velocity and the wave period parameter KC (Keuleman-Carrier) number are calculated, and the KC (Keuleman-Carrier) number is calculated; s3, calculating a resistance coefficient of a given wave condition and a vegetation parameter in combination with an existing formula; s4, simulating the stress motion of the flexible vegetation under the conditions of given incident wave conditions and vegetation parameters; and S5, determining an influence rule of wave nonlinearity on motion of submerged flexible vegetation. According to the flexible vegetation motion simulation method provided by the invention, the flexible vegetation dynamic model and different wave nonlinear theories are used, the accuracy of flexible vegetation stress motion simulation is improved, the simulation theories and methods are optimized, and a foundation is laid for researching flexible vegetation wave dissipation.

Description

technical field [0001] The invention relates to a non-linear flexible vegetation motion calculation technology based on different waves. It belongs to the field of coastal protection technology. Background technique [0002] Coastal vegetation is an important part of ecosystems and plays a vital role in dampening waves, mitigating storm surge hazards, and improving coastal resistance to erosion and sea level rise. Although a large number of studies on wave attenuation of rigid vegetation have made satisfactory progress, the understanding of the wave attenuation mechanism of flexible vegetation is still in its infancy. In view of the obvious differences in wave attenuation mechanism between flexible vegetation and rigid vegetation, and flexible vegetation such as seagrass is widely distributed in coastal areas around the world, the dynamic characteristics and wave attenuation mechanism of flexible vegetation have become the frontier of coastal engineering research. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/28G06F111/10G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F2111/10G06F2113/08G06F2119/14Y02A90/10
Inventor 殷锴徐宿东李梦琦冒刘燕郝建新龚尚鹏王奕然
Owner SOUTHEAST UNIV
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