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静态压力分布测量是流体力学实验中的一项重要内容。传统的实验方法是在实验模型上或水槽中开测压孔,用软管将测压孔与多管压力计连结后在排管上读取压力值。 1974年,北京大学力学系流体力学教研室根据回声原理,提出了一种新颖的多点压力测量设计思想,它是在多管压力计的基础上,用超声波测量排管中的水柱高度。它保留了多管压力计结构简单,压力显示直观等优点,同时又利用计算机进行控制和数据采集,实现了数据采集与处理的全部自动化。它为多点压力测量提供了一个方便的新手段。
Static pressure distribution measurement is an important part of fluid mechanics experiment. The traditional experimental method is to open the test pressure hole on the experimental model or in the water tank, and the pressure value is read on the exhaust pipe by connecting the pressure measuring hole with the multi-tube pressure gauge with a hose. In 1974, Department of Hydrodynamics, Peking University’s Department of Mechanics proposed a novel design idea of multi-point pressure measurement based on the principle of echo. It is based on multi-tube pressure gauge, ultrasonic measurement of water column height. It retains the advantages of multi-tube pressure gauge structure is simple, intuitive pressure display, while using computer control and data acquisition, data acquisition and processing to achieve full automation. It provides a convenient new measure for multi-point pressure measurement.