Two-phase cryogenic flow are widely present in high performance cooling systems and in aerospace technology. In this paper we re-examine previously developed cavitation models, used for water liquid, including thermal effect for simulations of cryogenic fluids. Thermal effects substantially impact the cavitation dynamics of cryogenic fluids. Different numerical cavitation models, based on different physics of mass exchange between liquid and vapor phases, were used to simulate the flowfield in external flow. The energy equation for the mixture is solved in conjunction with the mass and momentum conservation, and the evaporative cooling effects of cavitation are accounted for. Performances of the reported cavitation models are tested, comparing the predicted pressure and temperature profiles with the experimental data, with non-cryogenic and cryogenic fluids.

Investigation Of Thermodynamic Effects In Cryogenic Cavitation

DE GIORGI, Maria Grazia
2006-01-01

Abstract

Two-phase cryogenic flow are widely present in high performance cooling systems and in aerospace technology. In this paper we re-examine previously developed cavitation models, used for water liquid, including thermal effect for simulations of cryogenic fluids. Thermal effects substantially impact the cavitation dynamics of cryogenic fluids. Different numerical cavitation models, based on different physics of mass exchange between liquid and vapor phases, were used to simulate the flowfield in external flow. The energy equation for the mixture is solved in conjunction with the mass and momentum conservation, and the evaporative cooling effects of cavitation are accounted for. Performances of the reported cavitation models are tested, comparing the predicted pressure and temperature profiles with the experimental data, with non-cryogenic and cryogenic fluids.
2006
9788889884034
File in 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/11587/118431
 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