顶吹搅拌液相流体的水模实验与数值模拟分析
Journal of Wuhan University of Science and Technology(Natural Science Edition)（2018）
Abstract
采用水模型和 VOF数学模型对浸没式气体顶吹搅拌液相流体分别进行实验与数值模拟,分析在不同喷吹条件下气泡在液相中的形变、运动及液相流体的流场特性.结果表明,随着气流量和喷管浸入液面深度的增加,气-液混合区域分布范围逐渐扩大,液面波动更剧烈;气流量越大、喷管浸入液面越深、液相温度越高,气泡运动对液相流体内部的搅拌作用越强,流体内部扰动越剧烈,液相流场域中的流场速度越大,其中,当气流量为2.0 m3/h、喷管浸入液面深度为340 mm时,其液相流场速度最大值达到1.18 m/s.
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Key words
flow field of liquid phase,bubble motion,mixing by top blowing,VOF,multi-phase flow,water model experiment,numerical simulation,flow field characteristics
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