Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles

In view of the issue that surface catalysis has a significant influence on aerodynamic heating of hypersonic vehicle heatshield and is difficult to accurately predict, a four-step surface heterogeneous catalytic model including physisorption, chemisorption, Eley-Rideal (ER) recombination, and Langmu...

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Autor principal:	LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Office of Journal of Shanghai Jiao Tong University 2021
Materias:	surface catalysis chemical nonequilibrium physisorption aerodynamic heat hypersonic interface physics Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/e3928d9568a74700a5f459141e5ff1b7
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spelling	oai:doaj.org-article:e3928d9568a74700a5f459141e5ff1b72021-12-03T02:59:23ZNumerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles1006-246710.16183/j.cnki.jsjtu.2020.288https://doaj.org/article/e3928d9568a74700a5f459141e5ff1b72021-11-01T00:00:00Zhttp://xuebao.sjtu.edu.cn/article/2021/1006-2467/1006-2467-55-11-1352.shtmlhttps://doaj.org/toc/1006-2467In view of the issue that surface catalysis has a significant influence on aerodynamic heating of hypersonic vehicle heatshield and is difficult to accurately predict, a four-step surface heterogeneous catalytic model including physisorption, chemisorption, Eley-Rideal (ER) recombination, and Langmuir-Hinshelwood (LH) recombination was established by combining theoretical analysis and numerical simulation. Based on the model, the nonequilibrium flow and the aerodynamic heat around a two-dimensional cylinder were simulated. The influence of the fraction of occupied physisorption and chemisorption sites on the catalysis rate and the aerodynamic heat was analyzed. The results show that the established model can improve the prediction accuracy of the aerodynamic heat. The surface adsorption has a nonlinear influence on the aerodynamic heat due to the competing and promoting between different reaction pathways. Based on the real physicochemical process, the model can reflect the catalytic properties of different materials and further provides theoretical support for the lightweight and low redundancy design of the thermal protection system.LI Qin, YANG Xiaofeng, DONG Wei, DU YanxiaEditorial Office of Journal of Shanghai Jiao Tong Universityarticlesurface catalysischemical nonequilibriumphysisorptionaerodynamic heathypersonicinterface physicsEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156Naval architecture. Shipbuilding. Marine engineeringVM1-989ZHShanghai Jiaotong Daxue xuebao, Vol 55, Iss 11, Pp 1352-1361 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	surface catalysis chemical nonequilibrium physisorption aerodynamic heat hypersonic interface physics Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	surface catalysis chemical nonequilibrium physisorption aerodynamic heat hypersonic interface physics Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
description	In view of the issue that surface catalysis has a significant influence on aerodynamic heating of hypersonic vehicle heatshield and is difficult to accurately predict, a four-step surface heterogeneous catalytic model including physisorption, chemisorption, Eley-Rideal (ER) recombination, and Langmuir-Hinshelwood (LH) recombination was established by combining theoretical analysis and numerical simulation. Based on the model, the nonequilibrium flow and the aerodynamic heat around a two-dimensional cylinder were simulated. The influence of the fraction of occupied physisorption and chemisorption sites on the catalysis rate and the aerodynamic heat was analyzed. The results show that the established model can improve the prediction accuracy of the aerodynamic heat. The surface adsorption has a nonlinear influence on the aerodynamic heat due to the competing and promoting between different reaction pathways. Based on the real physicochemical process, the model can reflect the catalytic properties of different materials and further provides theoretical support for the lightweight and low redundancy design of the thermal protection system.
format	article
author	LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia
author_facet	LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia
author_sort	LI Qin, YANG Xiaofeng, DONG Wei, DU Yanxia
title	Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
title_short	Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
title_full	Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
title_fullStr	Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
title_full_unstemmed	Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles
title_sort	numerical simulation of influence of adsorption on surface heterogeneous catalysis process of hypersonic vehicles
publisher	Editorial Office of Journal of Shanghai Jiao Tong University
publishDate	2021
url	https://doaj.org/article/e3928d9568a74700a5f459141e5ff1b7
work_keys_str_mv	AT liqinyangxiaofengdongweiduyanxia numericalsimulationofinfluenceofadsorptiononsurfaceheterogeneouscatalysisprocessofhypersonicvehicles
_version_	1718373961052454912

Numerical Simulation of Influence of Adsorption on Surface Heterogeneous Catalysis Process of Hypersonic Vehicles

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