Volume 18, Issue 2 (4-2018)                   Modares Mechanical Engineering 2018, 18(2): 401-412 | Back to browse issues page

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Ghiyasi M, Shams M. Numerical Simulation of the Hydrodynamics of Two Phase Flow in Distillation Column Sieve Trays. Modares Mechanical Engineering 2018; 18 (2) :401-412
URL: http://mme.modares.ac.ir/article-15-11287-en.html
Numerical Simulation of the Hydrodynamics of Two Phase Flow in Distillation Column Sieve Trays
Mehdi Ghiyasi1 , Mehrzad Shams * 2
1- Department of Mechanical Engineering, Khaje Nasir Toosi University of Technology, Tehran, Iran.
2- Department of Mechanical Engineering, Khaje Nasir Toosi University of Technology, Tehran, Iran
Abstract:   (4486 Views)
The purpose of this research was to investigate the hydraulic parameters affecting the performance of the distillation column and the hydrodynamic characteristics of the flow field on the industrial scale-sieve tray using numerical simulation. Computational fluid dynamics method was used for analyzing and predicting flow behavior. The desired geometry including the space between two trays of the distillation column and the down comer region was considered. After plotting geometry, three dimensional grids were generated in Gambit software and the analysis of the flow field was traced in Fluent software. The Eulerian-Eulerian approach was applied to simulate two-phase flow and k-ε RNG model for turbulence modeling. Validation of the results was done successfully using Solari and Bell experiment data and the correlation presented by Colwell. The velocity distribution and volume fraction of liquid and gas in different zones were determined. The influence of inlet volumetric flow rate of liquid and gas, as well as the geometry of the weir, on parameters related to the tray performance such as clear liquid height and froth height were investigated. The results indicated that a better separation would occur in lower gas and liquid loads.
Keywords: Distillation Column, Sieve Tray, Clear Liquid Height, Computational Fluid Dynamics, Gas-Liquid Two phase Flow
Full-Text [PDF 1686 kb]   (6191 Downloads)    
Article Type: Research Article | Subject: Two & Multi Phase Flow
Received: 2017/11/6 | Accepted: 2017/12/24 | Published: 2018/02/15
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