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Experimental study of flow regimes in three‐dimensional confined impinging jets reactor
Author(s) -
Li WeiFeng,
Du KeJiang,
Yu GuangSuo,
Liu HaiFeng,
Wang FuChen
Publication year - 2014
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.14459
Subject(s) - reynolds number , mechanics , particle image velocimetry , flow visualization , inlet , nozzle , vortex , flow (mathematics) , jet (fluid) , oscillation (cell signaling) , physics , instability , boundary layer , materials science , chemistry , thermodynamics , turbulence , mechanical engineering , engineering , biochemistry
Dynamic behaviors in a three‐dimensional confined impinging jets reactor (CIJR) were experimentally studied by a flow visualization technique at 100 ≤ Re ≤ 2000 and 2 ≤ D/d ≤ 12 (where D is the reactor diameter and d is the nozzle diameter). The effects of inlet Reynolds numbers (Re) and geometry configurations of the CIJR on the flow regimes have been investigated by a particle image velocimetry and a high‐speed camera. Results show that with the increasing Re, a segregated flow regime, a radial deflective oscillation, an axial oscillation and a vortex shedding regime emerge in turns in CIJR. A map of parameter space formed by the inlet Reynolds number (Re) and the normalized reactor diameter (D/d) has been presented. The effects of jet instability and confined boundary of the chamber on the flow regimes and their transition are also investigated and discussed. © 2014 American Institute of Chemical Engineers AIChE J , 60: 3033–3045, 2014
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