bufferfly meaning in English

美丽花蝴蝶

Therefore , this paper studies three kindsvalves such like bufferfly valve , brake valve and ball valve , with the numerical simulation method by cfx which is often used to simulate the fluid . by the simulation of three kinds of valves , we can kown dynamic characteristic of them . in this paper , i not only simulate for three kinds of valves , but also analyse cause of flow - noise and give respectively mathematical model of main noise sources in piping system such as pupm and valve
本文通过cfx软件，用数值模拟的方法，对海水管路系统中常见的三种阀门(蝶阀、闸阀、球阀)流动特性及噪声进行了仿真分析，阐明阀门噪声产生的机理，建立了泵和阀门等噪声源的数学模型，并对管路系统中涉及到的边界条件做了适当的处理，分析了阀门下游的涡声。