Premium
CFD modeling of flow patterns and hydraulics of commercial‐scale sieve trays
Author(s) -
Gesit Getye,
Nandakumar K.,
Chuang K. T.
Publication year - 2003
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690490410
Subject(s) - tray , computational fluid dynamics , mechanics , hydraulics , sieve (category theory) , mass transfer , superficial velocity , flow (mathematics) , two phase flow , scale up , simulation , engineering , mechanical engineering , environmental science , thermodynamics , mathematics , physics , combinatorics , classical mechanics
A computational fluid dynamics (CFD) model was used to predict the flow patterns and hydraulics of a commercial‐scale sieve tray. The model considers the 3‐D two‐phase flow of gas and liquid in which each phase is treated as an interpenetrating continuum having separate transport equations. Interaction between the two phases occurs via an interphase momentum transfer. For the CFD analysis, the commercial packages CFX5.4 and CFX4.4 of AEA Technology were employed. Velocity distributions, clear liquid height, froth height, and liquid holdup fraction in froth were predicted for various combinations of gas and liquid flow rates. Tray geometry and operating conditions were based on the experimental work that Solari and Bell carried out in a 1.22‐m diameter air–water simulator in 1986 at Fractionation Research Inc. Predicted results were found to be in good agreement with the experimental data of these authors. The objective of the work was studying the extent to which CFD can be used as a prediction and design tool for industrial trays. The simulation results are such that CFD can be used as an invaluable tool in tray design and analysis.