In this paper, a numerical methodology to study the active-pressurization inside cryogenic tanks is proposed and validated with the results of an active-pressurization experiment in normal gravity, inside a liquid nitrogen (N2) tank. The tank is modeled as 2D axisymmetric, a fluid-wall conjugate heat transfer model is used, and the two-phase fluid interface is tracked with the Volume-of-Fluid (VOF) method. The results show that the experimental data are accurately reproduced with the SST k − ω with low-Re corrections turbulence model, and that the modeling of the shutdown of pressurant gas injection requires some attention from a numerical standpoint.
Setup of a numerical methodology for the study of active-pressurization of cryogenic tanks / Rossetti, Francesca; Pizzarelli, Marco; Pellegrini, Rocco; Cavallini, Enrico; Bernardini, Matteo. - (2023). (Intervento presentato al convegno Aerospace Europe Conference 2023 – 10ᵀᴴ EUCASS – 9ᵀᴴ CEAS tenutosi a Lausanne, Switzerland) [10.13009/eucass2023-430].
Setup of a numerical methodology for the study of active-pressurization of cryogenic tanks
Rossetti, Francesca;Bernardini, Matteo
2023
Abstract
In this paper, a numerical methodology to study the active-pressurization inside cryogenic tanks is proposed and validated with the results of an active-pressurization experiment in normal gravity, inside a liquid nitrogen (N2) tank. The tank is modeled as 2D axisymmetric, a fluid-wall conjugate heat transfer model is used, and the two-phase fluid interface is tracked with the Volume-of-Fluid (VOF) method. The results show that the experimental data are accurately reproduced with the SST k − ω with low-Re corrections turbulence model, and that the modeling of the shutdown of pressurant gas injection requires some attention from a numerical standpoint.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
