Effect of T-Shaped Micro-Channel Structure Dimension on Formation of Micro-Liquid-Columns Formed by Vertical-Shear-Flow

Abstract:

Effects of T-shaped micro-channel structure sizes on the formation of micro-liquid column formed by vertical-shear-flow were studied. The method of CFD based on VOF (Volume of Fluid) model was used in the computation. H₂O and C₅H₃ were used as continuous-phase and as dispersed-phase. Interface-tracking method was used to get data of the two phases. The size parameters include crossing angle (∠β), width ratio of vertical channel and main channel (W₂/W₁), depth ratio of vertical channel and main channel (D₂/D₁), depth-width ratio of main channel (D₁/W₁). The above parameters affect the forming time of micro-liquid columns, the order of importance is D₂/D₁,∠β, D₁/W₁, W₂/W₁; And for the length, the order is∠β, D₂/D₁, D₁/W₁, W₂/W₁. For the shortest forming time, the optimized parameters of ∠β, D₂/D₁, D₁/W₁ and W₂/W₁ are 90°, 1.00, 1.00 and 1.60. To get the shortest micro-liquid columns, the optimized parameters of ∠β, D₂/D₁, D₁/W₁ and W₂/W₁ are 60°, 1.00, 1.00 and 1.60.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 998-1002
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.998
• Online since: June 2014
• Authors: Zhi Xin Wang, Zhe Li, Heng Zhi Cai, Ya Jun Zhang, Jian Zhuang*
• Keywords: CFD, Micro-Channel, Micro-Liquid-Columns, Micro-Reactors, Vertical-Shear-Flow

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