Premium
Development of a hybrid k ‐ε turbulence model for swirling recirculating flows under moderate to strong swirl intensities
Author(s) -
Chang KehChin,
Chen ChingShun
Publication year - 1993
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650160506
Subject(s) - turbulence , mechanics , physics , anisotropy , k epsilon turbulence model , flow (mathematics) , computational fluid dynamics , k omega turbulence model , statistical physics , optics
Abstract A hybrid k ‐ε turbulence model, based on the concept that the modification of anisotropic effects should not be made in the flow regions inherent to small streamline curvatures, has been developed and examined with the swirling recirculating flows, with the swirl levels ranging from 0·6 to 1·23 in abrupt pipe expansion. A fairly satisfactory agreement of model predictions with the experimental data shows that this hybrid k ‐ε model can perform better simulation of swirling recirculating flows as compared to the standard k ‐ε model and the modified k ‐ε model proposed by Abujelala and Lilley.