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Prediction of flow over helically ribbed surfaces
Author(s) -
Henry F. S.,
Collins M. W.
Publication year - 1991
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.1650130305
Subject(s) - transverse plane , turbulence , pressure drop , mechanics , cylinder , annulus (botany) , flow (mathematics) , heat transfer , structural engineering , engineering , materials science , physics , mechanical engineering , composite material
Fully developed, steady flow through an annulus with a multistart, helical‐ribbed inner cylinder is numerically predicted and compared with available data. To facilitate comparison, the transverse‐ribbed case is included. It is predicted that substantial differences exist between turbulent flow over helical ribs and that over transverse ribs. The predictions clarify the experimental finding that helical‐ribbed cylinders can be expected to have better pressure drop and heat transfer characteristics than transverse‐ribbed cylinders. For this work the AERE Harwell code FLOW3D Release 2 was used.