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2024年4月16日发(作者:易语言制作的软件破解)
哈尔滨工业大学工学硕士学位论文
摘要
综合自然环境包含很多领域,大气环境是其重要组成部分,具有环境因
素复杂、参数多、分辨率广、数据海量等特点,以往对于大气环境数据的研
究停留在建模仿真的阶段,不易对数据的分布和规律进行直观的研究。自科
学计算可视化技术发展以来,研究人员通过将科学计算可视化技术应用在数
据分析上,为大气环境的研究提供直观、准确的视角。目前存在的大气环境
数据显示软件如Visual5D只能在软件自身上显示环境数据的属性而不能与
虚拟试验或虚拟场景进行联合,在虚拟试验运行时无法同时显示环境数据,
试验人员不易观察环境数据对虚拟试验的影响。本实验室前期基于MAK公
司的VR-Vantage软件开发了三维场景显示软件,能对虚拟试验过程进行显
示。本文在三维场景显示软件的基础上添加环境显示功能,对大气环境中的
属性进行可视化,方便试验人员观测环境数据对虚拟试验的影响。
本文对大气数据中的环境因素如风、温度、气压、相对湿度等进行分析,
根据科学计算可视化技术,采用基于图元的显示方式显示环境数据在三维空
间中的整体分布。对于大气数据中如风场等矢量数据场采用矢量箭标为基本
图元进行显示;对于大气数据中如温度等标量数据场采用圆点为基本图元进
行显示。对于大气数据中的标量数据在二维平面上采用等值线的方式进行数
据分析,对于三维空间中的标量数据采用等值面的形式进行数据分析。同时
将数据映射出的点图元和等值线图元、等值面图元基于Open Scene Graph三
维渲染引擎进行显示。
使用UML语言对虚拟大气环境数据显示软件进行设计,包括进行需求
分析、模型设计等。在三维场景显示软件的基础上添加数据读取功能、绘制
属性配置功能、等值线追踪功能、等值面构建功能和图元绘制功能,支持用
户配置显示属性并对各种数据的显示。
最后在H-TENA试验支撑体系结构中,对虚拟大气环境数据显示软件进
行功能测试,测试结果表明软件运行正常,能够根据用户设置的属性对环境
数据进行直接显示、等值线显示和等值面显示等,软件界面友好,运行可靠。
关键词:大气环境数据;科学计算可视化;等值线;等值面
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哈尔滨工业大学工学硕士学位论文
Abstract
The comprehensive natural environment contains many fields. The
atmospheric environment is an important part. It has the characteristics of
complicated environmental factors, many parameters, wide resolution and
abundant data. In the past, the study of atmospheric environment data stays in the
stage of modeling and simulation, making the direct study difficult. Since the
visualization in scientific computing has been developed, the researchers have
applied the visualization technology to the data analysis to provide an intuitive
and accurate view of the atmospheric environment. At present, the display
software for environment data such as Visual5D can only display the properties
of the environment data on the software itself and can not be combined with the
virtual test or virtual scene. The virtual data can not be displayed at the same
time when the virtual test runs, and the test personnel can not easily observe the
environmental data Impact on Virtual Trials. Based on MAK's VR-Vantage
software, we developed three-dimensional scene display software, which can
display the virtual test process. In this paper, the environment display function is
added on the basis of the 3D scene display software, and the attributes in the
atmospheric environment are visualized to facilitate the observation of the
impact of the environmental data on the virtual test.
In this paper, the environmental factors such as wind, temperature, air
pressure and water vapor ratio are analyzed, and the global distribution of
environmental data in three-dimensional space is displayed according to the
scientific visualization technology. For the atmospheric data, such as the wind
field and other vector data field using vector arrows as the basic elements to
display; for atmospheric data, such as temperature and other scalar data field
using the dot as the basic elements for display. The scalar data in the atmospheric
data are analyzed by contours in the two-dimensional plane, and the scalar data
in the three-dimensional space are analyzed by isometric surface. At the same
time, the data is mapped out of the dot entities and contour elements, and the
isosurface elements are displayed based on the Open Scene Graph rendering
engine.
Using the UML language to design the virtual atmospheric environment data
display software, including demand analysis, model design and so on. The
three-dimensional scene display software based on the addition of data read
function, drawing attribute configuration function, contour tracking function,
isoparametric construction function and primitive rendering function, supports
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