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Validation of CFD simulations of a stirred tank using particle image velocimetry data
Author(s) -
Sheng Jian,
Meng Hui,
Fox Rodney O.
Publication year - 1998
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450760333
Subject(s) - particle image velocimetry , reynolds averaged navier–stokes equations , mechanics , computational fluid dynamics , turbulence , reynolds stress , impeller , reynolds number , turbulence kinetic energy , particle tracking velocimetry , physics , materials science
Abstract Methods for validating CFD simulations based on the Reynolds Average Navier‐Stokes equation (RANS) against Particle Image Velocimetry (PIV) measurements are investigated and applied to one of the most common problems in the chemical process industry — the prediction of flow field in a stirred vessel. A total of 1024 sequential instantaneous 2D velocity fields along the central axial plane of a stirred vessel with a P‐4 axial impeller are obtained through PIV measurement. From the PIV data, the mean velocity, turbulent kinetic energy, Reynolds stresses and dissipation rate fields are extracted. By introducing several tools to quantify the similarities and differences between two‐dimensional fields, CFD predictions of the flow field are validated against PIV data. Furthermore, using PIV and LDV data, the effect of boundary conditions on CFD simulation results is examined. The effect of different Reynolds stress closures on the flow prediction is also studied.