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To study air pollution diffusion in an urban, 3D model of city geography is made by utilizing Google Sketch Up to extracting the maps of the building elevation and latitude and longitude from Google Earth. The flow field and pollutant diffusion in urban areas were researched by numerical simulation with Fluent according to the turbulence theory and the gas equation of motion. Evolutionary regularity...
Field trip and on-site detection is widely regarded as an important part of the Earth and environmental sciences. However, the real field trips, due to the complexity of the real environment can not be implemented. This article aims to establish a teaching using virtual trips laboratory characteristics of the modelbased on virtual field trips to design appropriate teaching modules, and use java 3d...
This paper presents technical issues on use and analysis of one kind of 3D geological modeling software named GOCAD. As the conventional geological information is not sufficient to meet the requirements of the current engineering construction, 3D geological modeling needs to be constructed. Otherwise, the key techniques are quite important to 3D modeling in engineering construction formation when...
The high-speed connection of 3G network has transferred cell-phone applications’ bottleneck from network speed to both the performance of hardware and software and the presentational layer of applications. The 3D visualization on search results for mobile search client can meet the needs of 3G new business. And this technology can be widely used in the areas such as product display, advertising, real...
Armored vehicle design involves various aspects of technical knowledge and experience. To effectively manage and share this knowledge and experience throughout the entire development process, a methodology of construction of knowledge based engineering (KBE) platform for armored vehicle is proposed. In this methodology proposed, architecture of the knowledge based engineering platform and category...
The deformation error for the machining of thin-walled part has a great influence on the machining quality of the part. However the traditional methodologies are still unsuccessful in studying the influence between the workpiece-fixture system's stiffness and machining errors of part. In this paper a framework to curb the machining errors based on the deformation of workpiece-fixture system is provided...
In order to solve facility layout problem from quantitative and qualitative perspectives, a layout approach based on simulation optimization and virtual reality (VR) is proposed. Firstly, the layout is optimized from the quantitative perspective through the iteration of simulation model and optimization algorithm. Then the optimized results are transferred into a VR system, in which designers are...
To improve knowledge management and service levels, and achieve integration of software used in the whole product development process are research purposes here. Existing problems in current researches of non-semantic and semantic models are analyzed. Product development process itself, i.e. origin of semantic information of product, is studied wholly as the research object. Through research on design...
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