Jet impingement against surfaces is uses in several industrial applications, including the internal cooling of turbine blades. Coolant used for blade cooling is air bleed from a compressor and is laden with particles. A numerical simulation of a particle-laden impinging jet is here proposed, aiming at studying and analysing the effect of surface curvature on flow field, particle motion and deposit formation. To this aim, an impinging jet on a flat and a curved walls is considered. Flow motion is be solved using Direct Numerical Simulation, thus no additional model is needed for turbulence effect on particle motion. Results show that the deposit patterns follow some secondary flow structure, showing a series of peaks forming according to those structures. The peaks are present in both the main orthogonal direction of the jet, but they are not symmetrical due to surface curvature.

Numerical simulation of a particle-laden impinging jet: Effect of wall curvature on particle deposition / Agati, Giuliano; Borello, Domenico; Rispoli, Franco; Salvagni, Alessandro; Venturini, Paolo. - 2:(2017), p. V02DT48A017. (Intervento presentato al convegno ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 tenutosi a usa nel 2017) [10.1115/GT2017-64629].

Numerical simulation of a particle-laden impinging jet: Effect of wall curvature on particle deposition

Agati, Giuliano;Borello, Domenico
;
Rispoli, Franco;Salvagni, Alessandro;Venturini, Paolo
2017

Abstract

Jet impingement against surfaces is uses in several industrial applications, including the internal cooling of turbine blades. Coolant used for blade cooling is air bleed from a compressor and is laden with particles. A numerical simulation of a particle-laden impinging jet is here proposed, aiming at studying and analysing the effect of surface curvature on flow field, particle motion and deposit formation. To this aim, an impinging jet on a flat and a curved walls is considered. Flow motion is be solved using Direct Numerical Simulation, thus no additional model is needed for turbulence effect on particle motion. Results show that the deposit patterns follow some secondary flow structure, showing a series of peaks forming according to those structures. The peaks are present in both the main orthogonal direction of the jet, but they are not symmetrical due to surface curvature.
2017
ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
Engineering (all)
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Numerical simulation of a particle-laden impinging jet: Effect of wall curvature on particle deposition / Agati, Giuliano; Borello, Domenico; Rispoli, Franco; Salvagni, Alessandro; Venturini, Paolo. - 2:(2017), p. V02DT48A017. (Intervento presentato al convegno ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 tenutosi a usa nel 2017) [10.1115/GT2017-64629].
File allegati a questo prodotto
File Dimensione Formato  
GT2017-64629_draft_sent_review_ALE.doc

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 4.05 MB
Formato Microsoft Word
4.05 MB Microsoft Word   Contatta l'autore
Agati_numerical_2017.pdf

solo gestori archivio

Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 776.36 kB
Formato Adobe PDF
776.36 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/11573/1016134
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 1
social impact