Combustion instability phenomenon arises from the coupling between heat release and acoustics. Several studies have been carried out in the past years with very dierent tools, from analytical studies to high delity simulations, like large eddy simulations (LES) or hybrid RANS-LES simulations. Despite the promising results, the computational eort required for such detailed numerical tools can be prohibitive for many applications. For this reason simplied models represent an alternative approach that needs to be improved. The main dierence between the simplied approaches with respect to detailed simulations is the necessity, for the former, of the preliminary knowledge of response functions, describing the coupling between heat release and acoustics. Looking for response function suitable to model longitudinal combustion instabilities in one-dimensional formulations, three dierent approaches are presented to extract them from hybrid RANS-LES simulations data.

Determination of heat release response function from 2D hybrid RANS-LES data for the CVRC combustor / Frezzotti, MARIA LUISA; Nasuti, Francesco; Huang, C.; Merkle, C.; Anderson, W. E.. - ELETTRONICO. - 2:(2015), pp. 1636-1648. (Intervento presentato al convegno 51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015 tenutosi a ORLANDO, FL USA nel 2015) [10.2514/6.2015-3841].

Determination of heat release response function from 2D hybrid RANS-LES data for the CVRC combustor

FREZZOTTI, MARIA LUISA;NASUTI, Francesco;
2015

Abstract

Combustion instability phenomenon arises from the coupling between heat release and acoustics. Several studies have been carried out in the past years with very dierent tools, from analytical studies to high delity simulations, like large eddy simulations (LES) or hybrid RANS-LES simulations. Despite the promising results, the computational eort required for such detailed numerical tools can be prohibitive for many applications. For this reason simplied models represent an alternative approach that needs to be improved. The main dierence between the simplied approaches with respect to detailed simulations is the necessity, for the former, of the preliminary knowledge of response functions, describing the coupling between heat release and acoustics. Looking for response function suitable to model longitudinal combustion instabilities in one-dimensional formulations, three dierent approaches are presented to extract them from hybrid RANS-LES simulations data.
2015
51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015
engineering (all); combustion instability; response function; low-order models
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Determination of heat release response function from 2D hybrid RANS-LES data for the CVRC combustor / Frezzotti, MARIA LUISA; Nasuti, Francesco; Huang, C.; Merkle, C.; Anderson, W. E.. - ELETTRONICO. - 2:(2015), pp. 1636-1648. (Intervento presentato al convegno 51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015 tenutosi a ORLANDO, FL USA nel 2015) [10.2514/6.2015-3841].
File allegati a questo prodotto
File Dimensione Formato  
Frezzotti_determination-of-heat_2015.pdf

solo gestori archivio

Note: AIAA 2015-3841
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 482.3 kB
Formato Adobe PDF
482.3 kB Adobe PDF   Contatta l'autore

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: https://hdl.handle.net/11573/849332
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? ND
social impact