The influence of rotational excitation on vibration-chemistry-vibration-coupling

Kanne, S.; Knab, O.; Fruehauf, H.-H.; Messerschmid, Ernst

doi:10.2514/6.1996-1802

Cited by 9 publications

(3 citation statements)

References 2 publications

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“…In-fact, the above model for Morrone and Treanor was extended by Knab et al 32 assuming an effective dissociation energy, which was further modified to include rotational energy in Ref. 33 . Other researchers have proposed various functional forms for the parameter U, including a parametrized model from Andrienko and Boyd 34 and a more generalized expansion from Kustova et.…”

Section: Relation To Prior Dissociation Modelsmentioning

confidence: 99%

Consistent kinetic-continuum dissociation model. II. Continuum formulation and verification

Singh

Schwartzentruber

2020

The Journal of Chemical Physics

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In this article, we implement a recently developed non-equilibrium chemical kinetics model 1 based on ab initio simulation data and perform verification studies. Direct molecular simulation data is used to verify the predictive capabilities of the model. Using the model, dominant physics such as need for a rotational energy equation, and the quantitative role of non-Boltzmann effects are identified. Based on the analysis and reasonable assumptions, a simplified model for implementation into large-scale CFD simulations is proposed. Without incurring additional computational cost, the model can be used in existing flow solvers to analyze hypersonic flows.

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Section: Relation To Prior Dissociation Modelsmentioning

confidence: 99%

Consistent kinetic-continuum dissociation model. II. Continuum formulation and verification

Singh

Schwartzentruber

2020

The Journal of Chemical Physics

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“…The conservation vector Thermochemical relaxation processes in the gas-phase are accounted for by the advanced multiple temperature Coupled Vibration-Chemistry-Vibration (CVCV) model 3) . The influence of vibrational and rotational excitation on chemistry and the influence of chemical reactions on vibration and rotation are modelled consistently in the source terms of the conservation equations.…”

Section: ∂(ρ I E Inti ) ∂Tmentioning

confidence: 99%

“…For the accurate determination of the thermochemical conditions, advanced thermochemical relaxation models for the gas-phase 1,2,3,4,5) as well as sophisticated gas-surface interaction models have been being developed. 6,7,8,9,10,11,12) …”

Section: Introductionmentioning

confidence: 99%

The Advanced URANUS Navier-Stokes Code for the Simulation of Nonequilibrium Re-entry Flows

Fertig

Herdrich

2009

Trans. JSASS Space Tech. Japan

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In order to predict the thermal and mechanical loads during re-entry, the URANUS (Upwind Relaxation Algorithm for Nonequilibrium Flows of the University of Stuttgart) has been being developed at the Institute of Space Systems (IRS) of the Universität Stuttgart. For the accurate determination of the thermochemical conditions, advanced thermochemical relaxation models for the gas-phase as well as sophisticated gas-surface interaction models have been developed. The Navier-Stokes equations for the 11-component air flow, which consists of+ and e − , have been derived by the Chapman-Enskog method from the Boltzmann-Equation. The linearized system of equations is solved fully coupled and fully implicitly, employing Newton's method. In the paper, the modelling is described in some detail and selected simulation results are presented.Key Words: Nonequilibrium, Re-entry, CFD, Boltzmann, Chapman-Cowlingc p :specific heat capacity at constant pressure J kgc v :specific heat capacity at constant volume J kg f int :distribution function for an internal degree of freedom (int ∈ {rot, vib, el} ) (−) g :relative velocity ms Trans. JSASS Space Tech. Japan Vol. 7, No. ists26, pp. Pe_15-Pe_24, 2009 V :thermal velocity m s

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Recent Improvements of the Parallel-Multiblock URANUS 3D Nonequilibrium Code

Fertig

Infed

Olawsky

et al.

High Performance Computing in Science and Engineering’ 04

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The influence of rotational excitation on vibration-chemistry-vibration-coupling

Cited by 9 publications

References 2 publications

Consistent kinetic-continuum dissociation model. II. Continuum formulation and verification

Consistent kinetic-continuum dissociation model. II. Continuum formulation and verification

The Advanced URANUS Navier-Stokes Code for the Simulation of Nonequilibrium Re-entry Flows

Recent Improvements of the Parallel-Multiblock URANUS 3D Nonequilibrium Code

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