Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect

In this study, a novel coaxial ducted aircraft structure is considered, based on which the flow field with the ceiling effect under different vertical velocities and heights is obtained by exploiting the CFD (Computational Fluid Dynamics) numerical calculation methods. Taking into account the ceilin...

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Autores principales:	Tianfu Ai, Wei Fan, Bin Xu, Changle Xiang, Yu Zhang, Zhiran Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	coaxial ducted fan aircraft ceiling effect aerodynamic analysis lift mechanism model Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/50cdc19a63384d279514dfbffb9d0ddc
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id	oai:doaj.org-article:50cdc19a63384d279514dfbffb9d0ddc
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spelling	oai:doaj.org-article:50cdc19a63384d279514dfbffb9d0ddc2021-11-04T15:00:43ZAerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect1994-20601997-003X10.1080/19942060.2021.1984311https://doaj.org/article/50cdc19a63384d279514dfbffb9d0ddc2021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/19942060.2021.1984311https://doaj.org/toc/1994-2060https://doaj.org/toc/1997-003XIn this study, a novel coaxial ducted aircraft structure is considered, based on which the flow field with the ceiling effect under different vertical velocities and heights is obtained by exploiting the CFD (Computational Fluid Dynamics) numerical calculation methods. Taking into account the ceiling effect, a total lift mechanism model of the coaxial ducted aircraft structure is established based on the momentum theory and the blade element theory. In the proposed mechanism model, the relationship between the vertical climbing rate and the induced speed of the rotors and the induced velocity interaction between the coaxial rotors and the effect of the wake of the upper rotor on the lower rotor are considered. To verify the effectiveness and feasibility of the mechanism model, the numerical calculation and the bench test are conducted. The results indicated that, under the hovering condition, the error between the mechanism model and the bench test results falls into 15%; under the vertical climbing condition, the error between the mechanism model and the CFD numerical calculation results falls into 10%. It is concluded that the proposed mechanism model exhibits high adaptability and accuracy.Tianfu AiWei FanBin XuChangle XiangYu ZhangZhiran ZhaoTaylor & Francis Grouparticlecoaxial ducted fan aircraftceiling effectaerodynamic analysislift mechanism modelEngineering (General). Civil engineering (General)TA1-2040ENEngineering Applications of Computational Fluid Mechanics, Vol 15, Iss 1, Pp 1563-1584 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coaxial ducted fan aircraft ceiling effect aerodynamic analysis lift mechanism model Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	coaxial ducted fan aircraft ceiling effect aerodynamic analysis lift mechanism model Engineering (General). Civil engineering (General) TA1-2040 Tianfu Ai Wei Fan Bin Xu Changle Xiang Yu Zhang Zhiran Zhao Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
description	In this study, a novel coaxial ducted aircraft structure is considered, based on which the flow field with the ceiling effect under different vertical velocities and heights is obtained by exploiting the CFD (Computational Fluid Dynamics) numerical calculation methods. Taking into account the ceiling effect, a total lift mechanism model of the coaxial ducted aircraft structure is established based on the momentum theory and the blade element theory. In the proposed mechanism model, the relationship between the vertical climbing rate and the induced speed of the rotors and the induced velocity interaction between the coaxial rotors and the effect of the wake of the upper rotor on the lower rotor are considered. To verify the effectiveness and feasibility of the mechanism model, the numerical calculation and the bench test are conducted. The results indicated that, under the hovering condition, the error between the mechanism model and the bench test results falls into 15%; under the vertical climbing condition, the error between the mechanism model and the CFD numerical calculation results falls into 10%. It is concluded that the proposed mechanism model exhibits high adaptability and accuracy.
format	article
author	Tianfu Ai Wei Fan Bin Xu Changle Xiang Yu Zhang Zhiran Zhao
author_facet	Tianfu Ai Wei Fan Bin Xu Changle Xiang Yu Zhang Zhiran Zhao
author_sort	Tianfu Ai
title	Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
title_short	Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
title_full	Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
title_fullStr	Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
title_full_unstemmed	Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
title_sort	aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/50cdc19a63384d279514dfbffb9d0ddc
work_keys_str_mv	AT tianfuai aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect AT weifan aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect AT binxu aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect AT changlexiang aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect AT yuzhang aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect AT zhiranzhao aerodynamicanalysisandmodelingofcoaxialductedfanaircraftwiththeceilingeffect
_version_	1718444769610301440

Aerodynamic analysis and modeling of coaxial ducted fan aircraft with the ceiling effect

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