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WANG Yu
College of Food Science and
Technology,
Nanjing Agricultural University,
Nanjing 210095, China
HE Pingting
College of Material Science and
Technology,
Nanjing University of Aeronautics
and Astronautics
Nanjing 210016, China
YE Hong
XIN Zhihong
College of Food Science and
Technology,
Nanjing Agricultural University,
Nanjing 210095, China
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NUMERICAL SIMULATION BY
COMPUTATIONAL FLUID DYNAMICS
AND EXPERIMENTAL STUDY ON
STIRRED BIOREACTOR WITH
PUNCHED IMPELLER
Abstract:
Instantaneous flow field and temperature field of the two-phase fluid are measured by particle image velocimetry (PIV) and steady state method during the state of onflow. A turbulent two-phase fluid model of stirred bioreactor with punched impeller is established by the computational fluid dynamics (CFD), using a rotating coordinate system and sliding mesh to describe the relative motion between impeller and baffles. The simulation and experiment results of flow and temperature field prove their warps are less than 10% and the mathematic model can well simulate the fields, which will also provide the study on optimized-design and scale-up of bioreactors with reference value.
Key words:
Stirred bioreactor with punched impeller Computational fluid dynamics (CFD)
Particle image velocimetry (PIV) Flow field Temperature field
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