流动显示技术及其在温排放模型试验中的应用

简介了作者的流动显示方法（包括应用塑料示踪剂、间隙曝光装置、定时控制器和普通照相机来拍摄水工整体试验中大范围流动的照片（流谱图））；并利用微机图形处理系统，对实拍流谱图进行图／数处理（包括光学修正、网格插补等预处理和信息处理），从中识别出流体物理参数及其等值线分布图（包括流速场、流函数场和涡度场等）。作为实例，介绍了应用本流动显示技术和方法，在某电厂温排水整体试验中获得取排水口近区流场定量信息的情

The Application of Flow Visualization Techniques to Cooling Water Model

A flow visualization method to research hydrodynamic parameters within a large range of test field is proposed.Flow visualization facilities consist of particular plastic tracers,an intermittent exposure unit and a camera system.A numerical method proposed in this article for processing the flow pattern quantiatively includes two parts:(a) The preprocessing of the measured flow pattern,in which some necessary correction rules are presented to improve the reality of the flow pattern ;(b)The calculation of the velocity,flow function,and vortex in the flow field.All processing of the flow pattern is performed automatically by a microcomputer system.As an example,two typical flow patterns of the cooling water discharged into the river from a thermal power plant are analyzed.