A Multiscale Approach for Building a Mechanism Based Catalysis Model for High Enthalpy Carbon Dioxide Flow. Thoemel, J., Lukkien, J., & Chazot, O. In Reston, Virigina, June, 2007. American Institute of Aeronautics and Astronautics. ![A Multiscale Approach for Building a Mechanism Based Catalysis Model for High Enthalpy Carbon Dioxide Flow [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The principles of the gas-surface-interaction taking place in the chemically reacting flow around an atmospheric re-entry vehicle are investigated. It turns out that the currently very often used approach employing a recombination coefficient has a limited applicability. Serious concerns arise when the interaction model is extrapolated from ground to flight tests. A mechanism based approach taking into account every interaction step is therefore proposed for the carbon dioxide interaction with platinum. The necessary reaction rates are determined using a microscopic model, which are then used in a continuum viscous flow simulation. The dependence of the catalysis on the outer flow conditions and also on the wall temperature is demonstrated. Nomenclature γ recombination coefficient,-M rec number of recombining atoms, 1/(m 2 s) M ↓ number of impinging atoms, 1/(m 2 s) [X] concentration of generic species,mol/m 3 k reaction rate, m, mol, s W ads microscopic reaction rate, 1/s p pressure, P a A site area adsorption site, m 2 σ initial/microscopic sticking coefficient,1 m molecular mass, kg k b Stefan-Boltzmann constant, J/K T temperature, K u tangential velocity, m/s v perpendicular velocity, m/s h enthalpy, J/kg w mass production term, kg/m 3 , kg/m 2 c species mass f ν stochiometric coefficient Y partial pressure coefficient/ZGB parameter θ surface coverage Da Damköhler number (s) adsorption site V vacant adsorption site concentration, mol/m 2 Subscripts rec Recombining ref. reference ad Adsorption reac Reaction rel. relative ER Eley-Rideal-Mechanism LH Langmuir-Hinshelwood-Mechanism
@inproceedings{thoemel2007,
address = {Reston, Virigina},
title = {A {Multiscale} {Approach} for {Building} a {Mechanism} {Based} {Catalysis} {Model} for {High} {Enthalpy} {Carbon} {Dioxide} {Flow}},
isbn = {978-1-62410-010-9},
url = {https://arc.aiaa.org/doi/10.2514/6.2007-4399},
doi = {10.2514/6.2007-4399},
abstract = {The principles of the gas-surface-interaction taking place in the chemically reacting flow around an atmospheric re-entry vehicle are investigated. It turns out that the currently very often used approach employing a recombination coefficient has a limited applicability. Serious concerns arise when the interaction model is extrapolated from ground to flight tests. A mechanism based approach taking into account every interaction step is therefore proposed for the carbon dioxide interaction with platinum. The necessary reaction rates are determined using a microscopic model, which are then used in a continuum viscous flow simulation. The dependence of the catalysis on the outer flow conditions and also on the wall temperature is demonstrated. Nomenclature γ recombination coefficient,-M rec number of recombining atoms, 1/(m 2 s) M ↓ number of impinging atoms, 1/(m 2 s) [X] concentration of generic species,mol/m 3 k reaction rate, m, mol, s W ads microscopic reaction rate, 1/s p pressure, P a A site area adsorption site, m 2 σ initial/microscopic sticking coefficient,1 m molecular mass, kg k b Stefan-Boltzmann constant, J/K T temperature, K u tangential velocity, m/s v perpendicular velocity, m/s h enthalpy, J/kg w mass production term, kg/m 3 , kg/m 2 c species mass f ν stochiometric coefficient Y partial pressure coefficient/ZGB parameter θ surface coverage Da Damköhler number (s) adsorption site V vacant adsorption site concentration, mol/m 2 Subscripts rec Recombining ref. reference ad Adsorption reac Reaction rel. relative ER Eley-Rideal-Mechanism LH Langmuir-Hinshelwood-Mechanism},
publisher = {American Institute of Aeronautics and Astronautics},
author = {Thoemel, Jan and Lukkien, Johan and Chazot, Olivier},
month = jun,
year = {2007},
}
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A mechanism based approach taking into account every interaction step is therefore proposed for the carbon dioxide interaction with platinum. The necessary reaction rates are determined using a microscopic model, which are then used in a continuum viscous flow simulation. The dependence of the catalysis on the outer flow conditions and also on the wall temperature is demonstrated. Nomenclature γ recombination coefficient,-M rec number of recombining atoms, 1/(m 2 s) M ↓ number of impinging atoms, 1/(m 2 s) [X] concentration of generic species,mol/m 3 k reaction rate, m, mol, s W ads microscopic reaction rate, 1/s p pressure, P a A site area adsorption site, m 2 σ initial/microscopic sticking coefficient,1 m molecular mass, kg k b Stefan-Boltzmann constant, J/K T temperature, K u tangential velocity, m/s v perpendicular velocity, m/s h enthalpy, J/kg w mass production term, kg/m 3 , kg/m 2 c species mass f ν stochiometric coefficient Y partial pressure coefficient/ZGB parameter θ surface coverage Da Damköhler number (s) adsorption site V vacant adsorption site concentration, mol/m 2 Subscripts rec Recombining ref. reference ad Adsorption reac Reaction rel. relative ER Eley-Rideal-Mechanism LH Langmuir-Hinshelwood-Mechanism","publisher":"American Institute of Aeronautics and Astronautics","author":[{"propositions":[],"lastnames":["Thoemel"],"firstnames":["Jan"],"suffixes":[]},{"propositions":[],"lastnames":["Lukkien"],"firstnames":["Johan"],"suffixes":[]},{"propositions":[],"lastnames":["Chazot"],"firstnames":["Olivier"],"suffixes":[]}],"month":"June","year":"2007","bibtex":"@inproceedings{thoemel2007,\n\taddress = {Reston, Virigina},\n\ttitle = {A {Multiscale} {Approach} for {Building} a {Mechanism} {Based} {Catalysis} {Model} for {High} {Enthalpy} {Carbon} {Dioxide} {Flow}},\n\tisbn = {978-1-62410-010-9},\n\turl = {https://arc.aiaa.org/doi/10.2514/6.2007-4399},\n\tdoi = {10.2514/6.2007-4399},\n\tabstract = {The principles of the gas-surface-interaction taking place in the chemically reacting flow around an atmospheric re-entry vehicle are investigated. It turns out that the currently very often used approach employing a recombination coefficient has a limited applicability. Serious concerns arise when the interaction model is extrapolated from ground to flight tests. A mechanism based approach taking into account every interaction step is therefore proposed for the carbon dioxide interaction with platinum. The necessary reaction rates are determined using a microscopic model, which are then used in a continuum viscous flow simulation. The dependence of the catalysis on the outer flow conditions and also on the wall temperature is demonstrated. Nomenclature γ recombination coefficient,-M rec number of recombining atoms, 1/(m 2 s) M ↓ number of impinging atoms, 1/(m 2 s) [X] concentration of generic species,mol/m 3 k reaction rate, m, mol, s W ads microscopic reaction rate, 1/s p pressure, P a A site area adsorption site, m 2 σ initial/microscopic sticking coefficient,1 m molecular mass, kg k b Stefan-Boltzmann constant, J/K T temperature, K u tangential velocity, m/s v perpendicular velocity, m/s h enthalpy, J/kg w mass production term, kg/m 3 , kg/m 2 c species mass f ν stochiometric coefficient Y partial pressure coefficient/ZGB parameter θ surface coverage Da Damköhler number (s) adsorption site V vacant adsorption site concentration, mol/m 2 Subscripts rec Recombining ref. reference ad Adsorption reac Reaction rel. relative ER Eley-Rideal-Mechanism LH Langmuir-Hinshelwood-Mechanism},\n\tpublisher = {American Institute of Aeronautics and Astronautics},\n\tauthor = {Thoemel, Jan and Lukkien, Johan and Chazot, Olivier},\n\tmonth = jun,\n\tyear = {2007},\n}\n\n\n\n","author_short":["Thoemel, J.","Lukkien, J.","Chazot, O."],"key":"thoemel2007","id":"thoemel2007","bibbaseid":"thoemel-lukkien-chazot-amultiscaleapproachforbuildingamechanismbasedcatalysismodelforhighenthalpycarbondioxideflow-2007","role":"author","urls":{"Paper":"https://arc.aiaa.org/doi/10.2514/6.2007-4399"},"metadata":{"authorlinks":{}}},"bibtype":"inproceedings","biburl":"https://bibbase.org/zotero-group/khanquist/4882481","dataSources":["qwkM8ZucCwtxbnXfc","ya2CyA73rpZseyrZ8","2252seNhipfTmjEBQ"],"keywords":[],"search_terms":["multiscale","approach","building","mechanism","based","catalysis","model","high","enthalpy","carbon","dioxide","flow","thoemel","lukkien","chazot"],"title":"A Multiscale Approach for Building a Mechanism Based Catalysis Model for High Enthalpy Carbon Dioxide Flow","year":2007}