Analysis method of high-speed compressible supercavity flow characteristics

A technology of flow characteristics and analysis methods, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of solving practical engineering problems and accurate calculation results

Inactive Publication Date: 2018-03-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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Problems solved by technology

At present, there are no relatively accurate analysis methods and numerical calculation methods for these problems. It is necessary to study a numerical calculation method that can accurately simulate the flow characteristics of high-speed compressible supercavitation, and appl

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  • Analysis method of high-speed compressible supercavity flow characteristics
  • Analysis method of high-speed compressible supercavity flow characteristics
  • Analysis method of high-speed compressible supercavity flow characteristics

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Example Embodiment

[0068] Example 1:

[0069] This embodiment takes the underwater high-speed vehicle disclosed abroad as the research object. The total length of the underwater high-speed vehicle is 157.4mm, the diameter of the head cavitator is 1.42mm, and the slenderness ratio of the projectile length to the maximum diameter of the underwater high-speed vehicle is 12.

[0070] Such as figure 1 As shown, this embodiment is a flowchart of a method for analyzing flow characteristics of a high-speed compressible supercavity. The method for analyzing flow characteristics of a high-speed compressible supercavity disclosed in this embodiment has specific implementation steps as follows:

[0071] Step 1: Build a geometric model.

[0072] Taking the underwater high-speed vehicle with the slewing structure as the research object, the geometric parameters of the slewing body are determined, and the geometric modeling is carried out using modeling software, such as figure 2 Shown is a schematic diagram of a ge...

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Abstract

The invention discloses an analysis method of high-speed compressible supercavity flow characteristics and belongs to the field of fluid mechanical engineering. The analysis method comprises the stepsas follows: step 1, establishing a geometric model; step 2, performing mesh division on the geometric model established in step 1 and a fluid computational domain; step 3, setting boundary conditionsand a computing method; step 4, performing secondary development through CFD software to realize compressible correction of physical attributes of water; step 5, conducting numerical computation analysis on the high-speed compressible supercavity flow characteristics; step 6, performing numerical simulation analysis and comparing a numerical simulation result with an experiment result to verify accuracy and feasibility of the analysis method. The high-speed compressible supercavity flow law and mechanism can be revealed, so that a theoretical foundation is laid for structural design of underwater high-speed navigation bodies, and the actual application engineering problems of the high-speed navigation bodies can be solved.

Description

technical field [0001] The invention belongs to the field of fluid mechanical engineering, and relates to a high-speed compressible supercavitation flow characteristic analysis method, in particular to a high-speed compressible supercavitation flow characteristic analysis method based on secondary development of CFD software. Background technique [0002] Cavitation refers to a phase change phenomenon that occurs in a liquid medium under certain conditions. When the partial pressure in the water is reduced to the saturated vapor pressure of water, part of the water will turn into water vapor, thus forming a steam cavity in the water flow, that is, cavitation occurs. Depending on the flow conditions, the shape of cavitation bubbles is also very different. Mainly divided into: primary cavitation, partial cavitation and supercavitation. When the cavitation area develops to cover the entire surface of the object and extends behind the object, even the size of the cavity can fa...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 王国玉李达钦张佳悦梁廷辉黄彪
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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