Modeling the coolant flow in regeneratively cooled rocket engines is a challenging task because of high wall temperature gradients, high Reynolds number and 3D-geometry of the passages. In case of methane as coolant, a further complication is the trans-critical operating condition of the fluid,which can greatly influence the coolant flow field and heat transfer. In the present paper a 3D Navier-Stokes solver for real gas is first validated for trans-critical hydrogen flows, then it is used to study the 3D flow fields of transcritical methane flow in rectangular cross section cooling channels. Finally, the results obtained for a reference straight channel flow are compared with those of a simplified approach based on empirical relations which could be more easily used in the engine design phase.

Numerical Investigation of Transcritical Fluid Flow and Heat Transfer in Channels / Pizzarelli, Marco; Nasuti, Francesco; Onofri, Marcello. - ELETTRONICO. - (2009), pp. 1-9. (Intervento presentato al convegno 3rd European Conference for Aero-Space Sciencies (EUCASS) tenutosi a Versailles, Francia nel 6-9 luglio 2009).

Numerical Investigation of Transcritical Fluid Flow and Heat Transfer in Channels

PIZZARELLI, MARCO;NASUTI, Francesco;ONOFRI, Marcello
2009

Abstract

Modeling the coolant flow in regeneratively cooled rocket engines is a challenging task because of high wall temperature gradients, high Reynolds number and 3D-geometry of the passages. In case of methane as coolant, a further complication is the trans-critical operating condition of the fluid,which can greatly influence the coolant flow field and heat transfer. In the present paper a 3D Navier-Stokes solver for real gas is first validated for trans-critical hydrogen flows, then it is used to study the 3D flow fields of transcritical methane flow in rectangular cross section cooling channels. Finally, the results obtained for a reference straight channel flow are compared with those of a simplified approach based on empirical relations which could be more easily used in the engine design phase.
2009
9782930389479
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

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/11573/358500
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact