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非强制环流混合器中的颗粒速度特性
Authors
刘梦溪
卢春喜
+3 more
孟振亮
张博峰
王维
Publication date
1 January 2017
Publisher
Abstract
为了考察无导流筒的非强制环流混合器的颗粒混合效率,强化颗粒沿径向的混合效果,采用计算流体动力学(CFD)方法,基于能量最小化多尺度(EMMS)的非均匀化曳力模型模拟研究了非强制环流混合器中的颗粒混合方式及相关流场。模拟结果所示:由于导流筒限制消失,颗粒在中心区与边壁区之间流入与流出,增加了颗粒的混合;在混合器底部(h=0.04 m),颗粒由边壁处向中心处流动,而其他高度,颗粒沿径向向外侧运动;由于中心下料管进料的偏流作用,使得颗粒在上部下降管区及h为0.16 m附近截面产生了明显的沿周向运动。在上部下降管区,边壁区的范围随着表观气速以及轴向高度的增加而减小。模拟结果为环流混合器结构的进一步优化提供了依据。</p
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/25147
Last time updated on 08/09/2018
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.ipe.ac.cn:122111/35688
Last time updated on 05/12/2019