【摘要】 旋进型旋涡流量计是一种新型流量计。被称为70年代的理想的流量计之一。但其内部机理尚待弄清楚。 本文利用高速摄影研究了流体在此流量计中的运动规律,建立了一个较完整、较精确、较具体的物理模型。 本文针对此物理模型进行了理论分析。获得了此流量计的两个基本公式。其中一个公式揭露了旋涡强度同各几何参数和运动参数间的关系,另一个公式表达了涡核的进动规律。更多还原

【Abstract】 Swirl-meter is a new flowmeter. It is called one of the ideal flowmeters in the last years.In this article, the fluid motion in a flowmeter of this type was studied by highspeed photograpby. A more complete, more exact and more concrete physical model of fluid flow is proposed.Two basic formulas are derived through theoretical analysis of the model. The relation between vortical intensity and geometric as well as moving parameters is expressed by one of the formulas while the law of precession of vortical nucleus is shown by the other one.更多还原