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Sizing of Safety Valves Using ANSYS CFX‐Flo ®
Author(s) -
Moncalvo D.,
Friedel L.,
Jörgensen B.,
Höhne T.
Publication year - 2009
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200800530
Subject(s) - discretization , turbulence , sizing , fineness , computational fluid dynamics , flow (mathematics) , mechanics , volume (thermodynamics) , work (physics) , degree (music) , engineering , mass flow , mechanical engineering , materials science , physics , nuclear engineering , mathematics , chemistry , thermodynamics , metallurgy , mathematical analysis , organic chemistry , acoustics
This work discusses the effect of the degree of fineness of the flow volume discretization and that of the turbulence model on the accuracy of reproduction of air mass flow rates in two safety valves using the CFD software ANSYS Flo ® . Calculations show that the degree of fineness of the discretization is the decisive factor affecting the exactness of the calculations and that the best reproduction is achieved with grids where at least two cells are built on the smallest edge. The selection of the turbulence model has by far in comparison a lower impact; however, the best accuracy is obtained using the standard k ‐ ω model and the SST modification of Menter.