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本文主要讨论采用Apple-Ⅱ微型计算机采集气流沿缩放喷管、渐缩喷管各截面压力或在不同工况下(初压不变,改变背压)采集孔板流量计的压差,通过CRT把有关变量汇集在一个图面上连续显示压力和流量和流量的变化规律、观察临界现象。可以命令打印机拷贝压力、流量、比容、流速等曲线。本文介绍了系统组成、系统工作过程、系统处理流程以及位移、压力、流量的标定,并给出有关程序。
This paper mainly discusses the use of Apple-Ⅱ microcomputer to collect airflow along the scaled nozzle, tapered nozzle of the cross-section pressure or under different conditions (initial pressure unchanged back pressure change) collection orifice flowmeter differential pressure through the CRT The relevant variables in a graph on a continuous display of pressure and flow and flow changes in the law to observe the critical phenomenon. You can order the printer copy pressure, flow, specific volume, flow rate and other curves. This article describes the system components, system work process, system processing flow and displacement, pressure, flow calibration, and gives the program.