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Visualization method for supersonic two-dimensional flow field data

A two-dimensional flow field and supersonic technology, applied in image data processing, 3D image processing, instruments, etc., can solve the problems of no visualization method, etc., and achieve the effect of rich flow details and clear display

Active Publication Date: 2018-04-03
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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  • Application Information

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Problems solved by technology

The supersonic flow field generally has both a shock wave structure with a sharp spatial change and a vortex structure with a relatively gentle change. How to clearly capture these two structures at the same time and present the physical information of the flow field in the uniform region has not been well visualized so far. method can do

Method used

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  • Visualization method for supersonic two-dimensional flow field data
  • Visualization method for supersonic two-dimensional flow field data
  • Visualization method for supersonic two-dimensional flow field data

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Embodiment Construction

[0032] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0033] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0034] This program includes the following steps:

[0035] a. Establish the mapping relationship between the flow field density value and the RGB color, and obtain the RGB color distribution of the grid unit through interpolation;

[0036] b. Use the dimensionless density as the height value of the grid point to obtain a three-dimensional density field surface similar to the free surface of water flow, and calculate the illumination intensity...

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Abstract

The invention provides a visualization method for supersonic two-dimensional flow field data, and the method comprises the following steps: a, building the mapping relation between flow field densityvalues and RGB colors, and obtaining the distribution of RGB colors of grid units through interpolation; b, taking the dimensionless density as the height values of mesh points, obtaining a three-dimensional density field curved surface similar to a water flow free surface, and calculating the illumination intensity of each grid unit; c, multiplying the RGB colors of each grid unit by the illumination intensity, and obtaining the final color distribution. According to the scheme of the invention, the method can achieve the capturing of a shock wave structure with the severe spatial changes anda spiral structure with the more gentle changes, achieves the presentation of flow field density distribution information of a uniform area, and achieves the high-fidelity display of a two-dimensional supersonic flow field.

Description

technical field [0001] The invention relates to the intersection field of computational fluid dynamics and computer graphics, especially a visualization method for supersonic two-dimensional flow field data. Background technique [0002] With the rapid development of high-performance computing technology, scientific computing capabilities have been greatly improved, and the unsteady multi-dimensional, multi-field, and multi-variable data generated by numerical calculations has grown geometrically. In the face of massive simulation data, how to carry out analysis and research and extract useful information has become a practical problem that scientists need to solve urgently. Among them, data visualization method is an effective means of data analysis. This method draws the calculated data into visual and intuitive graphic images, freeing researchers from the discrete data. Through the analysis of the overall graphic image, the ability to grasp the overall situation is impro...

Claims

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Application Information

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IPC IPC(8): G06T15/00
CPCG06T15/005
Inventor 刘俊路波王显圣何彬华梁锦敏杨可陈植刘志勇
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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