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Evaluation of plug flow assumption in packed beds
Author(s) -
Foumeny Esmail A.,
Pahlevanzadeh Hassan
Publication year - 1990
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270130123
Subject(s) - plug flow , packed bed , transient flow , void (composites) , transient (computer programming) , flow (mathematics) , simulation , mechanics , computer simulation , spark plug , computer science , mathematics , mathematical optimization , engineering , mechanical engineering , materials science , physics , electrical engineering , surge , chemical engineering , composite material , operating system
Knowledge of modelling and computer simulation is an essential prerequisite for type design and operation of packed bed systems. Unfortunately, the existing models are based on a number of weak assumptions of which plug flow can be considered as a common deficiency. Such a simplification would inevitably have a noticeable bearing on the accuracy of the final design and consequently calls for the development of a coherent mathematical description of the packed bed systems so that reliable design information can be explored. A two‐dimensional heterogeneous transient model has been developed which allows for the radial variations of velocity and void age. The model equations have been solved using numerical approximation. The simulated results reveal significant differences between the present refined data and those established from existing plug flow models.