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基于图像法的稀相气/固两相流混合比及空隙率分析 被引量:4
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作者 周云龙 彭颖 《化工自动化及仪表》 CAS 2013年第10期1270-1275,共6页
通过使用高速摄影系统获得稀相气/固两相流流动图像,并利用图像处理技术对获得的图像进行均匀光照、二值化及粘连颗粒分割等预处理,统计出图像中颗粒尺寸参数。利用数学公式,计算出稀相气/固两相流流混合比与空隙率的纵向分布和横向分布... 通过使用高速摄影系统获得稀相气/固两相流流动图像,并利用图像处理技术对获得的图像进行均匀光照、二值化及粘连颗粒分割等预处理,统计出图像中颗粒尺寸参数。利用数学公式,计算出稀相气/固两相流流混合比与空隙率的纵向分布和横向分布,以及不同截面积的混合比与空隙率分布,并对混合比与空隙率的分布进行比较分析。最终得出在稀相气/固两相流中,混合比比空隙率能更好地描述气/固两相流流动特性的结论。 展开更多
关键词 稀相气 固两相流 图像处理技术 混合比分布 空隙率分布
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Laws of Jet Mixing of the Swirled Flows in a Pipe
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作者 Nikolay Shishkin 《Journal of Energy and Power Engineering》 2013年第7期1223-1230,共8页
Results of experimental research of the mixing process of coaxial flows in a pipe with swirled peripheral jet are presented in this paper. Distribution of temperature and concentration of gases on the axis and wall of... Results of experimental research of the mixing process of coaxial flows in a pipe with swirled peripheral jet are presented in this paper. Distribution of temperature and concentration of gases on the axis and wall of the channel under the influence of such factors as the regime flow, ratio of density of flows and swirl degree of the peripheral jet are studied. Research of temperature, swirl angle, circulation in cross sections along with the channel have shown that their distributions have the jet-like character and are described by known dependences for the layer of mixture. 展开更多
关键词 Film cooling adiabatic jet mixing swirl flow.
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