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CFD predictions for chemical processing in a confined impinging‐jets reactor
Author(s) -
Liu Ying,
Fox R. O.
Publication year - 2006
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.10633
Subject(s) - computational fluid dynamics , reynolds number , turbulence , chemical reactor , jet (fluid) , range (aeronautics) , mechanics , flow (mathematics) , scale (ratio) , scale up , process engineering , mechanical engineering , physics , engineering , thermodynamics , aerospace engineering , classical mechanics , quantum mechanics
Abstract Confined impinging‐jets reactors (CIJR) offer many advantages for the chemical processing of rapid processes, such as precipitation and the production of organic nanoparticles. Nevertheless, due to the lack of predictive design criteria, the use of such a reactor for a new process currently requires a significant experimental campaign before it can be used commercially. Experimentally derived scale‐up rules for CIJRs have recently been reported. Using carefully controlled experiments with a fast parallel‐reaction system, the conversion of 2,2‐dimethoxypropane (DMP) for a wide range of jet Reynolds numbers have been measured. The experimental conversion data can be accurately predicted using computational fluid dynamics (CFD) for the range of jet Reynolds number where the flow is turbulent. In addition, the CFD provides a wealth of detailed information on the reacting flow inside of the CIJR. Such information provides excellent guidance for improving the performance of the reactor by, for example, changes in the geometry. By clearly illustrating the ability of CFD to reproduce (without adjustable parameters) the experimental data for a CIJR, this study makes a significant step in the direction of “experiment‐free” design and scale‐up of chemical reactors. © 2005 American Institute of Chemical Engineers AIChE J, 2006