The numerical simulation of the effect of atomizing angle on the particle's movement and convection in granular tower 雾化角对造粒塔内颗粒飞行及换热影响的数值模拟
Through the special studies on impacts to atomizing and humidifying effect from such factors as the firing pin type, centrifugal structure, higher spraying pressure, less aperture, initial water temperature and original state of the air, some conclusions are obtained, such as : the centrifugal nozzle with firing pin type, high pressure and little aperture has bigger air eddy and atomizing angle . the spaying liquid has high velocity . the droplet is small, and the heat and mass transfer velocity is high 通过对撞针型结构、离心式结构、较高的喷水压力、较小的喷嘴孔径、喷水初温及待加湿空气初状态对雾化加湿效果的作用原理的重点分析,得到:撞针型高压小孔径离心式喷嘴具有较大的空气涡与雾化角,喷出的液体流速高、液滴小、水与空气传热传质速率高,撞针型结构提高了雾化加湿效率,高压小孔径的特点为雾化加湿提供了较大的能量,而喷水初温的升高会减小水的粘性力和表面张力,从而优化加湿效果。