Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14789
Title: Simulation of spray dryers using computational fluid dynamics
Authors: HUANG LIXIN
Keywords: Atomization; heat and mass transfer; evaporation; spray drying; turbulence models; two-phase flow
Issue Date: 24-May-2005
Source: HUANG LIXIN (2005-05-24). Simulation of spray dryers using computational fluid dynamics. ScholarBank@NUS Repository.
Abstract: A computational fluid dynamic (CFD) model is developed and used to predict flow patterns and overall drying performance of a conventional cylinder-on-cone spray dryer by comparing the predicted results with published data. An industrial spray dryer fitted with two pressure nozzles is also evaluated and tested. This project also evaluates some novel spray dryer geometries, i.e., conical, hour-glass shape and lantern shape chambers. An innovative one-stage and two-stage, two dimensional horizontal spray dryer concept is evaluated, as well. Spray dryers fitted with rotating disk atomizer and ultrasonic nozzle are tested and validated by the experimental data provided by researchers from Australia and Brazil. New drying kinetics model is inserted into to the commercial code to improve the prediction of CFD model. Hence, such a CFD model can be used as an effective tool for the initial design as well as off-design analysis of a spray dryer, which currently is done empirically.
URI: http://scholarbank.nus.edu.sg/handle/10635/14789
Appears in Collections:Ph.D Theses (Open)

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