High-fidelity database of supercritical homogeneous isotropic turbulence in the pseudo-boiling region
Supercritical fluids operate above their critical point and are characterized by strong nonlinearities in the equation of state, highly non-ideal fluid behavior, and a tight coupling between thermodynamics and transport properties. As a result, supercritical fluid flows behave fundamentally differen...
| Autores: | , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2025 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositório: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglês |
| OAI Identifier: | oai:upcommons.upc.edu:2117/457188 |
| Acesso em linha: | https://hdl.handle.net/2117/457188 https://dx.doi.org/10.1038/s41597-025-05693-3 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Supercritical fluids Turbulence Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids::Transport de fluids Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids::Reologia |
| Resumo: | Supercritical fluids operate above their critical point and are characterized by strong nonlinearities in the equation of state, highly non-ideal fluid behavior, and a tight coupling between thermodynamics and transport properties. As a result, supercritical fluid flows behave fundamentally different from their low-pressure counterparts. The thermodynamic space of supercritical fluids is commonly divided into two main regions separated by the pseudo-boiling region, where a second-order phase transition occurs. Transcritical flows—those crossing the pseudo-boiling line—undergo substantial variations in thermophysical properties. Additionally, near the pseudo-boiling line, smaller-than-Kolmogorov thermal scales are generated, which are tightly coupled with small velocity scales. The complex two-way interaction between pseudo-boiling phenomena and turbulence remains an open question, both from a fundamental physics perspective and for modeling efforts. In this regard, a database of homogeneous isotropic turbulence under various supercritical thermodynamic conditions in the vicinity of the pseudo-boiling line is presented. The dataset includes instantaneous three-dimensional turbulent flow fields and real-fluid thermophysical quantities, as well as Reynolds- and Favre-averaged data, enabling the study and modeling of transcritical fluid turbulence. |
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