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10th International Workshop on Radiation of High Temperature Gases for Space Missions

9–12 Sept 2024
University Oxford
Europe/London timezone

Contact/Information

Session

State to state and Collisional Radiative Modelling

CRM
9 Sept 2024, 09:50
Oxford e-Research Centre (University Oxford)

Oxford e-Research Centre

University Oxford

7 Keble Rd, Oxford OX1 3QG United Kingdom

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  1. 139. Ab Initio Electronic Structure Calculations of CNN for CN Excitation Studies
    Eric Geistfeld (NASA)
    09/09/2024, 09:50
    State to state and Collisional Radiative Modelling

    Background

    Titan's atmosphere is composed mostly of N$_2$ with a small amount of CH$_4$, and so, shock layers around craft entering Titan's atmosphere will contain a variety of molecules formed from H, C, and N atoms, including the cyanogen radical CN. Sensitivity analysis has shown that the radiative heat flux predicted by computational fluid dynamics (CFD) simulations of...

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  2. 136. State-to-State investigation of hypersonic high-enthalpy nitrogen flows
    Francesco Bonelli (Politecnico di Bari)
    09/09/2024, 11:00
    State to state and Collisional Radiative Modelling

    1 Background of the study
    Nowadays, reusable vehicles to access space are very attractive for cost reduction. Many reusable spacecrafts, such as Space Shuttle, have been conceived for both orbital and suborbital services [1]. These vehicles must withstand very high temperatures when they fly at hypersonic speeds in the continuum regime, and an adequate Thermal Protection System (TPS) is...

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  3. 148. Electronic State-to-State Modelling of a Recombining N2/Argon Plasma and Comparisons with Experiments
    Ulysse Dubuet (Laboratoire EM2C, CNRS, CentraleSupélec, Université Paris-Saclay)
    09/09/2024, 11:25
    State to state and Collisional Radiative Modelling

    An electronic state-to-state kinetic model for nitrogen/argon mixtures is obtained by reduction of a state-of-the-art vibronic-specific model. The model is used to study nitrogen recombination. A high-temperature plasma initially at local thermodynamic equilibrium at 6750 K and 1 atm passes through a water-cooled tube that forces rapid cooling and nonequilibrium recombination. Simulations...

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  4. 155. Collisional-Radiative Modeling of Air Plasma Generation at Suborbital Hypersonic Velocities
    Timothy Aiken (University of Colorado)
    09/09/2024, 11:50
    State to state and Collisional Radiative Modelling

    See attached.

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  5. 153. Multi-temperature model for giant planet atmospheres
    Gianpiero Colonna (PLASMI Lab at CNR-NANOTEC)
    12/09/2024, 09:00
    State to state and Collisional Radiative Modelling

    \section{Introduction}
    %\label{sec:intro}

    In the last years, state-to-state (StS) chemical kinetics have been used to model high-enthalpy flows in 2D configurations in dissociating air~\cite{bonelli2024finite,guo2024investigation,wang2023high}. The recent interest in the exploration of ice giant planets~\cite{blanc2021science} needs the construction of kinetic schemes for Hydrogen/Helium...

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  6. 161. Thermodynamics and transport properties for the characterization of ice giant entry conditions
    Annarita Laricchiuta (CNR ISTP Bari)
    12/09/2024, 09:25
    State to state and Collisional Radiative Modelling

    \section{Background of the study}
    \label{sec:intro}
    The planned NASA missions to the ice-giants, i.e. Uranus and Neptune, push the space exploration to the edge of the solar system and commit to new challenges the research activities meant to address all the related engineering issues. Fluid-dynamic models of hypersonic entry conditions allows the estimation of heat load at the surface of...

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  7. 166. Comparative assessment of state-to-state and macroscopic multi-temperature modeling for atmospheric re-entry conditions on ice giants
    Dr Marco Fossati (University of Strathclyde)
    12/09/2024, 09:50
    State to state and Collisional Radiative Modelling

    Background of the study

    The continuous study of ice giants, Uranus and Neptune is critical to advance our understanding of the solar system's origin and evolution. Despite being subject of numerous previous studies, fundamental questions still remain about the composition and thermal behaviour of their atmosphere and about the planets’ bulk composition. It is therefore paramount to...

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  8. 174. Simplifying Chemical Kinetics in Hypersonics Non-Equilibrium Flows for Earth Re-entry
    Claudio Rapisarda (University of Oxford)
    12/09/2024, 10:15
    State to state and Collisional Radiative Modelling

    Background to the study

    Thermal-chemical kinetics for non-equilibrium flows can be accurately represented through state-to-state (StS) models, where each molecular energy state is treated as a distinct pseudo-species. However, StS modeling requires a significantly larger number of variables than multi-temperature models, as it involves hundreds of internal energy states and thousands of...

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