A numerical framework for the direct simulation, in the low-Mach number limit, of reacting and non-reacting transcritical flows is presented. The key feature are an efficient and detailed representation of the real fluid properties and an high-order spatial discretization. The latter is of fundamental importance to correctly resolve the largely non-linear behavior of the fluid in the proximity of the pseudo-boiling. The validity of the low-Mach number assumptions is assessed for a previously developed non-reacting DNS database of transcritical and supercritical mixing. Fully resolved DNS data employing high-fidelity thermodynamical models are also used to investigate the spectral characteristic as well as the differences between transcritical and supercritical jets.

Low-mach number simulations of transcritical flows / Lapenna, Pasquale E.; Lamioni, Rachele; Ciottoli, Pietro Paolo; Creta, Francesco. - ELETTRONICO. - :210059(2018), p. 2979. ((Intervento presentato al convegno AIAA Aerospace Sciences Meeting, 2018 tenutosi a usa [10.2514/6.2018-0346].

Low-mach number simulations of transcritical flows

Lapenna, Pasquale E.
;
Lamioni, Rachele;Ciottoli, Pietro Paolo;Creta, Francesco
2018

Abstract

A numerical framework for the direct simulation, in the low-Mach number limit, of reacting and non-reacting transcritical flows is presented. The key feature are an efficient and detailed representation of the real fluid properties and an high-order spatial discretization. The latter is of fundamental importance to correctly resolve the largely non-linear behavior of the fluid in the proximity of the pseudo-boiling. The validity of the low-Mach number assumptions is assessed for a previously developed non-reacting DNS database of transcritical and supercritical mixing. Fully resolved DNS data employing high-fidelity thermodynamical models are also used to investigate the spectral characteristic as well as the differences between transcritical and supercritical jets.
9781624105241
9781510857032
File allegati a questo prodotto
File Dimensione Formato  
Lapenna_low_2018.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 5.02 MB
Formato Adobe PDF
5.02 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Frontespizio_ 56th-Science-Meeting_2018.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.58 MB
Formato Adobe PDF
3.58 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/1119290
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? ND
social impact