Numerical investigation of dense gas flows through transcritical multistage axial Organic Rankine Cycle turbines
TypeCommunications avec actes
Many recent studies suggest that supercritical Organic Rankine Cycles have a great potential for lowtemperature heat recovery applications, since they allow better recovery efficiency for a simplified cycle architecture. In this work we investigate flows of dense gases through axial, multi-stage, supercritical ORC turbines, using a numerical code including advanced equations of state and a high-order discretization scheme. Several working fluids are considered, and performances of supercritical turbines are compared to those of subcritical ones using the same fluids.
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SCIACOVELLI, Luca; CINNELLA, Paola (ASME, 2014)Transonic flows through axial, multi-stage, transcritical ORC turbines, are investigated by using a numerical solver including advanced multiparameter equations of state and a high-order discretization scheme. The working ...
SCIACOVELLI, Luca; CINNELLA, Paola; GLOERFELT, Xavier (Cambridge University Press (CUP), 2017)The influence of dense-gas effects on compressible wall-bounded turbulence is investigated by means of direct numerical simulations of supersonic turbulent channel flows. Results are obtained for PP11, a heavy fluorocarbon ...
GLOERFELT, Xavier; ROBINET, Jean Christophe; SCIACOVELLI, Luca; CINNELLA, Paola; GRASSO, Francesco (Cambridge University Press, 2020)A study of dense-gas effects on the stability of compressible boundary-layer flows is conducted. From the laminar similarity solution, the temperature variations are small due to the high specific heat of dense gases, ...
SCIACOVELLI, Luca; CINNELLA, Paola; GLOERFELT, Xavier (Springer, 2018)Dense gas effects, encountered in many engineering applications, lead to unconventional variations of the thermodynamic and transport properties in the supersonic flow regime, which in turn are responsible for considerable ...
SCIACOVELLI, Luca; CINNELLA, Paola; CONTENT, C.; GRASSO, Francesco (Cambridge University Press (CUP), 2016)A detailed numerical study of the influence of dense gas effects on the large-scale dynamics of decaying homogeneous isotropic turbulence is carried out by using the van der Waals gas model. More specifically, we focus on ...