期刊
POWDER TECHNOLOGY
卷 395, 期 -, 页码 501-515出版社
ELSEVIER
DOI: 10.1016/j.powtec.2021.09.054
关键词
Hydrocyclone; LES-WALE model; Lagrangian particle tracking; Air-core; Bypass reduction; Annular Rings
资金
- TCS Research, Tata Consultancy Services [SWON 1045144]
Hydrocyclones provide an efficient environment for particle classification or phase separation, but face the performance limitation of fine particle bypassing. A novel design modification involving fitting thin concentric rings to the cylindro-conical section can mitigate this limitation and achieve better fine particle separation.
Hydrocylones offer a process intensified environment for rapid, high-throughput and relatively sharp particle classification or phase separation. One of the main performance limitations of hydrocyclone is bypassing of fines to the underflow. To address this limitation, a novel design modification of fitting thin concentric rings to the cylindro-conical section has been proposed. The Computational Fluid Dynamics (CFD) modeling based methodology has been adopted to validate the hypothesis. Predictions using Realizable k-epsilon, Reynolds Stress Model (RSM), and Large Eddy Simulation Wall Adopting Local Eddy viscosity (LES-WALE) turbulence models has revealed that LES-WALE matched better with the experimental observations. The experimental data included overall performance parameters and detailed observations of axial and tangential velocity profiles across the hydrocyclone. The validated CFD model and the methodology was then used to predict the behavior of the proposed designs. They established that the modifications held promise in reducing the bypass with additional benefits of sharper separation curve and finer D-50. (C) 2021 Elsevier B.V. All rights reserved.
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