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Analysis of Transient Inhomogeneous Flow and Thermal Characteristics in a Drying Room via Large Eddy Simulation
Author(s) -
Li Jin,
Zhao Peng,
Shi Yajun,
Chang Xing,
Zhang Chungang,
Guo Yong,
Liu Yali,
Liu Chongying,
Chen Yan,
Yin Dachuan
Publication year - 2020
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.201900661
Subject(s) - mechanics , inlet , transient (computer programming) , flow (mathematics) , large eddy simulation , thermal , materials science , transient flow , computer simulation , turbulence , meteorology , geology , physics , computer science , geomorphology , surge , operating system
To optimize the flow structure in a soft‐capsule drying room, the notable inhomogeneous characteristics of flow behavior and thermal feature are numerically explored. An advanced three‐dimensional numerical model is established and a verified large eddy simulation (LES) model is adopted. The results indicated that there is a highly inhomogeneous flow structure especially approaching the bilateral region of the drying room, mainly caused by the large velocity gradient whereas a relatively uniform flow structure is observed in the middle region. In the drying process, the inhomogeneous flow feature is sensitive to the increased inlet velocity and aspect ratio λ . It was found that a suitable inlet velocity and a small aspect ratio λ can provide a better drying flow environment.