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潮流模型试验采用边界流量控制是国际上先进的模型试验技术。本文依据广东大亚湾核电站温排放和江苏省灌河口外拦门沙治理物理模型试验研究的实践,系统介绍国内率先进行的边界流量控制模型试验技术。该自动控制系统经多年使用,证明运行可靠,重复性能好,能良好地模拟海域复杂的实际潮汐过程。本文同时介绍氢气泡测速仪,该仪器可在计算机屏幕上显示并储存氢气泡示踪线,以及读出瞬时流速量值和方向,实现模型试验流速测量自动化,以解决潮流模型试验中低流速量测难题,提高量测精度。
Flow model test using the boundary flow control is internationally advanced model test technology. Based on the practice of physical model test of warm discharge of Daya Bay Nuclear Power Plant in Guangdong Province and Gansu Bay estuary outside Gansu Province, this paper systematically introduces the first model of boundary flow control test in China. The automatic control system, after years of use, has proved to be reliable and has good repeatability and well simulated actual tidal processes in the sea. This article also introduces a hydrogen bubble anemometer that displays and stores hydrogen bubble tracer lines on a computer screen and reads out instantaneous flow rate values and directions to automate the model test flow rate measurement to address low flow rates in a tidal current model test Test problems, improve measurement accuracy.