2026-04-14T09:00:51Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3941092026-01-21T13:07:17Zcom_2072_1033col_2072_452950

Non-dissipative large-eddy simulation of high-pressure transcritical turbulent flows: formulation and a priori analysis Bernades, Marc Jofre Cruanyes, Lluís Capuano, Francesco Universitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids Universitat Politècnica de Catalunya. GReCEF- Grup de Recerca en Ciència i Enginyeria de Fluids Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids Eddies Turbulence Remolins (Mecànica de fluids) Turbulència This work presents a filtered set of equations suitable for the large-eddy simulation of high-pressure transcritical turbulent flows. The formulation is derived from a novel kinetic-energy- and pressureequilibrium- preserving numerical framework, recently proposed to provide physics-compatible (stable and non-dissipative) simulations of the problem. In particular, the compressible Navier-Stokes equations are required to describe the evolution of supercritical fluids along with adequate real-gas thermodynamic closures based, for example, on the Peng-Robinson equation of state. The novelty of this work focuses, therefore, on (i) deriving the filtered set of equations based on the kinetic-energy and pressure-equilibriumpreserving framework, (ii) identifying the sub-filtered unclosed terms, and (iii) performing exploratory assessments of the resulting framework. In the future, these results will potentially enable the design of physics-based sub-filter scale models for high-fidelity LES of high-pressure transcritical turbulent flows. This work is funded by the European Union (ERC, SCRAMBLE,101040379). Peer Reviewed Postprint (published version) 2023 Conference report Bernades, M.; Jofre, L.; Capuano, F. Non-dissipative large-eddy simulation of high-pressure transcritical turbulent flows: formulation and a priori analysis. A: International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements. "14th International ERCOFTAC Symposium on Engineering, Turbulence, Modelling and Measurements: 6th-8th September 2023, Barcelona, Spain: proceedings". European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023, p. 1-6. https://hdl.handle.net/2117/394109 eng https://drive.google.com/file/d/1q2BDOO5bXfqq0Y4z4HCGndiFI033bPyg/view?usp=drive_link info:eu-repo/grantAgreement/EC/HE/101040379/EU/Turbulence-On-a-Chip: Supercritically Overcoming the Energy Frontier in Microfluidics/SCRAMBLE Open Access 6 p. application/pdf European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC)