渦漩式霧化裝置之理論分析暨實驗探討
Date Issued
2005
Date
2005
Author(s)
練懿海
DOI
zh-TW
Abstract
Theoretical and experimental studies have been made to investigate the influence of atomizer construction and controlled pressure difference of swirl atomizers. The analysis of fluid field in the swirl chamber is governed by mass/energy conservation rules; in the region outside the nozzle, the analysis of oscillation of liquid sheet is based on Squire`s expression for the amplitude growth rate. With some physical assumptions of control volume, initial values and model correlation, analytical results make it possible to predict film thickness, velocity distribution, spray cone angle and droplet size directly. A series of experiments have been carried out to support and compare the theoretical results. The pictures for velocity profile and boundary layer thickness in the swirl chamber have been established with the aid of MATLAB. Finally, it has been recognized that the change of different individual design parameter and its corresponding flow number would still be a way to optimize the performance of swirl atomizers.
Subjects
霧化
液膜
渦漩式
粒徑
swirl atomizer
film thickness
droplet size
spray cone angle
SDGs
Type
thesis
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