150USRT Class R-513A Refrigerant Two-Stage Centrifugal Compressor Design Point and Separation Point Flow Field Simulation Analysis
نویسندگان
چکیده
This study used computational fluid dynamics for low greenhouse effect refrigerant (R-513A) simulation analysis in the two-stage 150 USRT class oil-free centrifugal compressor using integrated part load value (IPLV) and internal flow field. The rotor speed mass rate IPLV working conditions with various loads were planned Stage 1 2 simulations, respectively. performance field numerical analyses is discussed. Ansys-CFX software conservation form of a 3D steady-state Navier–Stokes equation set finite volume discretization method computation. computing mode produced better efficiency flexible mesh setting k-omega (k-ω) model, which has near wall boundary layer Reynolds number (used as turbulence model) simulation. R-513A property was calculated Soave–Redlich–Kwong gas equation. discusses shaft work, pressure ratio, isentropic also describes main research findings meridional pressure, contour maps, velocity vector diagrams. According to results, highest results 75% case, are 88.19% 89.06%, decreased 75.93% 82.26%, respectively, 25% case. diagram shows that there back-flow distribution impeller shroud. analyzed.
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ژورنال
عنوان ژورنال: Processes
سال: 2023
ISSN: ['2227-9717']
DOI: https://doi.org/10.3390/pr11010253