Measurement of gas flow by means of critical flow venturi nozzles 用临界流量文丘里喷嘴测定气体流量
Measurement of gas flow by means of critical flow venturi nozzles 用临界流量文丘里喷嘴测定气体流量
Real gas critical flow coefficient 真实气体临界流量系数
Critical flow venturi 临界流量文杜里管
Critical flow measurement 临界流量测量
Measurement of gas flow by means of critical flow venturi nozzles iso 9300 : 2005 ; german version en iso 9300 : 2005 用文杜利临界流量喷嘴测量气体流量
By reading papers on debris flow ' s triggering and confluence , we know that if we consider debris flow ' s triggering and confluence as a whole system , its whole process have many critical characteristic situation . such as , critical slope grade , critical thickness of earth source , critical precipitation , critical runoff and critical velocity of flow 本文通过对泥石流产汇流研究现状的分析得知,泥石流的产汇流可作为一个系统来研究,泥石流产汇流过程具有一系列临界特征值,如:临界坡度、土源临界厚度、临界雨量、临界流量和临界流速。
The results of this part of the study show that the supersonic separator has a satisfactory dehydration performance without any need of external mechanical power and chemicals . the influences of pressure loss ratio on its dehydration performance were also studied . it is well indicated by the results that the pressure loss ratio is a key factor that determines the dehydration performance of the supersonic separator , increasing pressure loss ratio usually improves its separation performance 如果要获得较低的干气出口露点或较大的露点降,那么必须以牺牲一部分初始压力作为代价;保持超音速分离管入口流量为临界流量是保证超音速分离管具有良好气液分离性能的必要条件;压损比、激波产生的位置是影响超音速分离管工作性能的关键。
The third chapter employed a new method of taking pressure as step to simulate refrigerant flow characteristics in adiabatic capillary tubes , based on adiabatic capillary tube mathematic models . refrigerant critical flux in capillary tubes is predicted by means of back - propagated method . it indicates that this method can save computational time , so it can be used in engineering 在建立绝热毛细管数学模型基础上,采用以压力为步长的新方法对绝热毛细管进行了仿真计算,采用bp神经网络对制冷剂在毛细管中临界流量进行了预测,结果表明该方法能够较大幅度地节省计算时间,因而具有工程应用价值。