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A Noise Optimization Method for the Grille at the Entrance to the Sea

An optimization method and grid technology, applied in multi-objective optimization, design optimization/simulation, instruments, etc., can solve the problem of reducing the far-field transmission of noise from the sea inlet grid, and achieve the effect of reducing the overall noise level

Active Publication Date: 2022-05-06
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the grille at the inlet of the sea pipeline directly affects the flow inside the pipeline and the flow noise level at the outlet of the pipeline. However, there is no noise optimization method for the grille at the sea inlet to effectively reduce the far-field propagation of the noise of the sea pipeline.

Method used

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  • A Noise Optimization Method for the Grille at the Entrance to the Sea
  • A Noise Optimization Method for the Grille at the Entrance to the Sea
  • A Noise Optimization Method for the Grille at the Entrance to the Sea

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Embodiment 1

[0056] A method for optimizing noise of a grille at an entrance to the sea, the method comprising:

[0057] Step 1: According to the physical phenomenon and model of the flow at the entrance to the sea, establish the original calculation domain model for the flow simulation at the entrance to the sea; wherein, the grid in the original calculation domain model adopts a straight grid structure with an inclination angle of 60°;

[0058] Step 2: Use FLUENT as the solver to obtain the wall noise distribution characteristics of the original computational domain model, and the steady-state noise distribution characteristics of the front and rear sides of the cascade of the original computational domain model, and obtain the original Calculate the noise level of the overall flow field in the domain model;

[0059] Step 3: According to the flow process of the fluid in the original calculation domain model, determine the flow field characteristics in the grid flow channel and the water ...

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Abstract

The invention provides a noise optimization method for a grille at an entrance to the sea, and belongs to the technical field of vibration reduction and noise reduction for pipelines leading to the sea. The method first obtains the grid circular computational domain model for flow field and flow noise, and then analyzes the flow field and flow of the model after the grid inclination angle is changed alone, the grid shape is changed independently, and the grid inclination angle and shape are changed simultaneously. The noise situation determines the impact of the grid inclination angle change, grid shape change, and grid inclination angle and shape change on the grid noise, and finally through the grid inclination angle change, grid shape change, and grid inclination angle and shape In order to determine the influence of grille noise, the optimization plan for grille noise at the entrance to the sea is determined.

Description

technical field [0001] The invention relates to a noise optimization method for a grille at an entrance to the sea, and belongs to the technical field of vibration reduction and noise reduction for pipelines leading to the sea. Background technique [0002] The purpose of installing the entrance grille for the sea-passing pipeline of the underwater submersible is to eliminate the flow noise in the sea-passing pipeline, reduce its own noise level, and improve its concealment. The structure of the inlet grille of the sea-through pipeline directly affects the flow inside the pipeline and the flow noise level at the outlet of the pipeline. However, in the current technology, there is no noise optimization method for the grille of the sea-through entrance to effectively reduce the far-field propagation of the noise of the sea-through pipeline. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention proposes a noi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/15G06F111/06G06F113/08G06F113/14G06F119/10
CPCG06F2119/10G06F30/17G06F30/20
Inventor 刘全忠王兴茹徐科繁董泳
Owner HARBIN INST OF TECH