TY - JOUR
TI - Investigation on steady and unsteady performance of a SCO2 centrifugal compressor with splitters
AU - Guo Ding
AU - Shi Dongbo
AU - Zhang Di
JN - Thermal Science
PY - 2017
VL - 21
IS - 11
SP - 185
EP - 192
PT - Article
AB - Supercritical carbon dioxide (SCO2 ) is widely concerned with its excellent  physical properties. Its high density helps to achieve a compact mechanical  structure, especially in all kinds of turbomachinery. In this paper, a SCO2  centrifugal compressor with splitter blades is displayed and numerically  investigated. A thorough numerical analysis of the steady and unsteady  performance of this SCO2 centrifugal compressor is performed in ANSYS-CFX  with SST turbulence model. Streamlines, pressure and temperature under  steady- and unsteady-state are compared and analyzed. Moreover, the  trans-critical phenomenon at the leading edge of the rotor blade and the  aerodynamic performance are covered. The results in this paper provide the  foundation for the design and numerical investigation of SCO2 centrifugal  compressors.