dc.contributor
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica
dc.contributor
Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.contributor
Universitat Politècnica de Catalunya. GReCEF- Grup de Recerca en Ciència i Enginyeria de Fluids
dc.contributor.author
Bandarrinha Monteiro, Carlos Alexandre
dc.contributor.author
Jofre Cruanyes, Lluís
dc.identifier
Bandarrinha, C.; Jofre, L. Buoyant high-pressure transcritical fluid duct flows. A: European Congress on Computational Methods in Applied Sciences and Engineering. "Proceedings of the 9th European Congress on Computational Methods in Applied Sciences and Engineering". Barcelona: International Centre for Numerical Methods in Engineering (CIMNE), 2024. ISBN 2696-6999. DOI 10.23967/eccomas.2024.054 .
dc.identifier
https://hdl.handle.net/2117/418450
dc.identifier
10.23967/eccomas.2024.054
dc.description.abstract
In this work, direct numerical simulations of a high-pressure transcritical square duct flow with distinct gravity directions in the cross-stream plane are performed. The buoyancy effects on the instantaneous and mean fields are analyzed. Significant differences are highlighted in the distributions of Prandtl’s second-kind motions due to a strong coupling effect between the high-pressure transcritical phenomena and the buoyancy effects. The observed phenomena indicate that prior characterizations of secondary flows and their contribution to heat and mass transfer (commonly considered as independent from the Reynolds number) do not apply in cases above the critical regime where strong variations in thermophysical properties are found. Furthermore, the number and dynamics of these secondary flows are significantly affected by the gravity direction.
dc.description.abstract
Peer Reviewed
dc.description.abstract
Postprint (published version)
dc.format
application/pdf
dc.publisher
International Centre for Numerical Methods in Engineering (CIMNE)
dc.relation
https://www.scipedia.com/public/Monteiro_Jofre_2024a
dc.relation
info:eu-repo/grantAgreement/EC/HE/101040379/EU/Turbulence-On-a-Chip: Supercritically Overcoming the Energy Frontier in Microfluidics/SCRAMBLE
dc.rights
http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rights
Attribution-NonCommercial-ShareAlike 4.0 International
dc.subject
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
dc.subject
Supercritical fluids
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Buoyancy effects
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Supercritical fluids
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Turbulent square duct
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Fluids supercrítics
dc.title
Buoyant high-pressure transcritical fluid duct flows
dc.type
Conference report
