水工渐变段设计与计算机图形处理

Design of hydraulic gradual transitions and computer image processing

研究了圆移组合曲面渐变段的几何特性、曲面的设计原理与方法,针对渐变段的定位计算、圆移组合曲面的展开计算作了详细说明.同时,基于AUTOCAD2000的平台,利用VBA作二次开发,开发了渐变段计算机辅助设计与图形处理系统,并将此系统用于某水电站进水口渐变段的设计,绘制出相应的渐变段断面图和组合曲面展开图.通过工程实例证明,该系统有一定的实用性.

The draulic gradua tion, the deve geometric character, design theory and methods of circle moving composed curved hy transition are studied emphatically. In light of the localization formula of gradual transi opment calculation of circle moring composed curve is expounded emphatically. The sys tem of computer aided design and computer image processing on gradual transition is developed base on AutoCAD2000 by VBA. And the system has been applied to design of an intake＇s gradual transition for a Hydropower s.tation to draw curve developing drawings and curve sectional drawings. Through the actual project design, it is proved that this system is to be useful.