高压静电场作用下的两相流动模型

从荷电两相流中荷电离散相粒子的受力分析及量级比较出发,采用雷诺输运原理,建立了适合荷电离散相和连续相的雷诺输运方程。在此基础上,导出了荷电两相流中颗粒相和连续相的连续性方程、动量方程和能量方程。从而在荷电两相流动的研究中,完整地建立了荷电两相流动的基本方程。

静电喷粉植保机具两相流流场的分析计算

对静电喷粉植保机具中的荷电气固两相流流场进行了理论和实验研究,分析了荷电粉粒的受力状况,建立了荷电粉粒的运动方程,并对其求解、给出了具体算例。用激光多普勒技术测量了充电区域中粉粒的速度场,将计算结果和测量结果进行了对比,二者比较接近。此结果可用于指导喷粉机具的设计与计算。

荷电两相射流的理论分析与计算

通过荷电两相流中荷电离散相粒子的受力分析 ,建立了荷电两相流动的基本方程 在此基础上 ,对荷电两相湍流圆射流流场进行了理论分析 根据射流的结构 ,分别给出了位势核心区和其以外区域连续相流场和离散相速度场的计算公式 该计算方法已用于喷粉机的设计 分析中未考虑离散相对连续相的反作用及离散相粒子间的相互作用 。

Characteristics of a Flow Transducer Based on Polarized Charge

In this paper we analyze the characteristics of a flow transducer based on polarized charge. The effects of the charged particles in pneumatic pipeline on the measurement pipe potential are discussed in detail and the equivalent circuits of the potential measurement are presented. On this bases, the relationships between mass flowrate and the electrical potential are obtained for different time constants of the measurement circuit. A satisfactory model is presented based on the characteristics of gas solid two phase flow. The linearity of the model is verified by the experiment results. The transducer, which is coaxially connected with the transport pipeline, does not disturb the flow state and has the features of ruggedness and durability, it is especially suitable for industry process control.