Multi-temperature model from state-specific data for Hydrogen/Helium mixture in high-enthalpy flows

International Journal of Heat and Mass Transfer 2026 Open access

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Authors: Gianpiero Colonna, Louis Walpot, Davide Ninni, Francesco Bonelli, G. Pascazio, Lucia Daniela Pietanza, Annarita Laricchiuta
DOI: 10.1016/j.ijheatmasstransfer.2026.128376
Cited by: 2
References: 48

Abstract

The paper presents a multi-temperature model for H 2 /He mixture derived from the state-to-state kinetics. Electronically excited states have been included in the model as separate pseudo-species. The theoretical approach on the reduction of a state-specific model to multi-temperature kinetic is described in detail in the Supplementary Material , reporting also analytical fits. The model has been verified against state-to-state calculations in 0D approximation, demonstrating a good degree of accuracy. The verification has also been performed investigating the hypersonic flow past a two-dimensional capsule entering in Uranus atmosphere.

Fields of Study & Subjects

Gas Dynamics and Kinetic Theory Lattice Boltzmann Simulation Studies Fluid dynamics and aerodynamics studies

Publication details

Journal / source
International Journal of Heat and Mass Transfer
Publisher
Elsevier BV
Volume
259
Pages
128376–128376
Publication date
15 January 2026
Language
EN