This book contains a collection of the main contributions from the third edition of the NICFD conference, organized by the Special Interest Group on Non-Ideal Compressible Fluid Dynamics (SIG-49). It provides insight on the latest research findings in the field of NICFD that are relevant to a number of engineering applications related to the conversion of renewable and waste energy sources, like organic Rankine cycles, supercritical CO2 cycle power plants, combustors operating with supercritical fluids, and heat pumps. The various chapters of the book document research encompassing theoretical, computational, and experimental aspects of the gas dynamics of non-ideal reactive and non-reactive flows and their impact for the design of internal flow components (turbomachinery, heat exchangers, combustors). Since the accurate calculation of fluid thermo-physical properties is of great concern in NICFD, all the chapters address this problem by describing state-of-the-art modelsfor the characterization of the properties of pure fluids and mixtures.
Содержание
1. The effect of isentropic exponent on supersonic turbine wakes.- 2. Evaluating the fundamental derivative in the equilibrium and non-equilibrium two-phase expansion of MM.- 3. Towards subgrid-scale turbulence modeling in dense gas flows.- 4. Application of hot-wire anemometry in the high subsonic organic vapor flow regime.- 5. Performance of a rotatable cylinder Pitot probe in high subsonic real gas flows.- 6. Non-ideal gas effects on supersonic-nozzle transfer functions.- 7. Design of a closed-loop supercritical Carbon Dioxide wind tunnel: numerical modelling of non-equilibrium condensation in a converging-diverging nozzle.- 8. Numerical investigation of loss mechanisms in a partially loaded supersonic ORC turbine stage.- 9. Generic numerical test case to understand cryogenic methane combustion dynamics.- 10. Numerical investigation of a supercritical CO2 centrifugal compressor with an in-house density based compressible CFD solver.- 11. Numerical characterization of premixed methane flames in vitiated atmosphere at supercritical conditions.- 12. Measurement system of small-scale high expansion ratio ORC turbine.- 13. A novel acoustic resonator for speed of sound measurement in dense organic vapours.- 14. Formation of rarefaction shockwaves in non-ideal gases with temperature gradients.
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