throttling area

There is a huge waste of pressure energy in natural gas processing and transport area by using throttling refrigeration process.

天然气处理、输运过程中常采用节流制冷工艺，这会导致压力能的巨大浪费。

The simulation results showed that the high pressure fluid speed mutation and pressure drop is the largest when high pressure fluid flow through the throttle mouth place. The appearance of cavitations and eddy was easily to observe at the place of throttling mouth area.

仿真结果表明：高压流体在节流口处是速度突变最大和压降最大的地方，在节流口区域处很容易观察到有气穴和漩涡现象发生。

To study the cavitation mechanics and its relation-ship with noise characteristics of the valve-port high-speed flow, high-speed photography and noise spectrum analysis are applied to investigate the flow area and the related phenomenon inside the throttling area of valves.

为研究阀口高速流动中的旋涡空化机理及其与噪声特性的关系，运用高速摄像、噪声频谱分析等手段对典型阀口孔隙节流处的流场及流动现象进行分析。