Laminar flow transitions in a 2D channel with circular spacers
Laminar flow transitions in a 2D channel with circular spacers
复制标题
具有圆形垫片的 2D 通道中的层流过渡
DOI：
10.1021/ie0607797
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发表时间：
2007
影响因子：
4.2
通讯作者：
J. Bao
中科院分区：
文献类型：
--
作者：
A. Alexiadis;D. Wiley;D. Fletcher;J. Bao
采用计算流体动力学（CFD）模型模拟了螺旋缠绕膜组件纵向截面的狭窄间隔物填充通道中的流动。计算了不同几何形状和雷诺数下的流动。计算表明，在层流状态下存在不同的流动模式。导出了描述不同流型之间发生转变的临界雷诺数的方程。结果表明，临界雷诺数决定了在没有过多的压力降，实现良好的混合条件的点。
A computational fluid dynamics (CFD) model was used to simulate the flow in a narrow spacer-filled channel, which represents the longitudinal section of a spiral-wound module membrane. The flow was computed for different geometries and Reynolds numbers. Calculations show the presence of different flow patterns in the laminar regime. Equations describing the critical Reynolds numbers at which the transition between different patterns occur were derived. It is shown that the critical Reynolds number determines the point at which good mixing conditions are achieved without excessive pressure drop.