Numerical investigation of dense gas flows through transcritical multistage axial Organic Rankine Cycle turbines
Communication avec acte
Date
2013Abstract
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.
Files in this item
- Name:
- LDF_CFM_2013_SCIACOVELLI.pdf
- Size:
- 3.380Mb
- Format:
- Description:
- Article principal
Collections
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteA high-order shock-capturing finite-difference scheme for scale-resolving numerical simulations of hypersonic high-enthalpy flows, involving thermal non-equilibrium effects, is presented. The suitability of the numerical ...
-
Communication avec actePASSIATORE, Donatella; SCIACOVELLI, Luca; CINNELLA, Paola; PASCAZIO, Giuseppe (Council of the Aeronautical Sciences, 2022-11)A hypersonic turbulent boundary layer over a flat plate is numerically investigated. The large Mach number and temperature values in the freestream (M e = 12.48 and T e = 594.3 K, respectively) lead to a high-enthalpy ...
-
Communication avec acteCANNICI, Aron; PASSIATORE, Donatella; SCIACOVELLI, Luca; CINNELLA, Paola (3AF, Association Aéronautique et Astronautique de France, 2023-03)The present work reports the results of a priori tests of Reynolds-Averaged Navier–Stokes (RANS) models based on Direct Numerical Simulations (DNS) data of zero-pressure-gradient flat-plate turbulent boundary layers. The ...
-
Communication avec actePASSIATORE, Donatella; SCIACOVELLI, Luca; CINNELLA, Paola; PASCAZIO, Giuseppe (3AF, Association Aéronautique et Astronautique de France, 2021-04)The influence of high-enthalpy effects in hypersonic, spatially developing boundary layers is investigated by means of direct numerical simulations. The flow of a reacting mixture of nitrogen and oxygen over a flat plate ...
-
Communication avec actePASSIATORE, Donatella; SCIACOVELLI, Luca; CINNELLA, Paola; PASCAZIO, Giuseppe (3AF, Association Aéronautique et Astronautique de France, 2023-03-29)The dynamics of a shock wave impinging on a freestream-perturbed high-enthalpy boundary layer is investigated by means of direct numerical simulation. The oblique shock impacts on a cooled flat-plate boundary layer with ...