Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation

Based on the theory of computational fluid dynamics (CFD), with the help of the Fluent software and the powerful parallel computing capability of the super cloud computer, the single-phase flow transient simulation calculation of the windage power loss of the engagement spiral bevel gear pair (SBGP)...

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Autores principales:	Yuzhong Zhang, Linlin Li, Ziqiang Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	multi-objective optimization computational fluid dynamics spiral bevel gear pair windage power loss dynamic mesh model windshield Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/1cdaa11b1e3742f793a7bcd48b913c63
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spelling	oai:doaj.org-article:1cdaa11b1e3742f793a7bcd48b913c632021-11-25T18:51:21ZOptimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation10.3390/pr91119992227-9717https://doaj.org/article/1cdaa11b1e3742f793a7bcd48b913c632021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1999https://doaj.org/toc/2227-9717Based on the theory of computational fluid dynamics (CFD), with the help of the Fluent software and the powerful parallel computing capability of the super cloud computer, the single-phase flow transient simulation calculation of the windage power loss of the engagement spiral bevel gear pair (SBGP) was performed. The two-equation SST <i>k-ω</i> turbulence model based on the assumption of eddy viscosity was adopted, which was improved from the standard <i>k-ε</i> model combined with the Wilcox <i>k-ω</i> model. The SST <i>k-ω</i> turbulence model inherited the respective advantages of the Wilcox <i>k-ω</i> model in the near-wall region and the <i>k-ε</i> model in the free shear layer and could more accurately describe the resistance and separation effect of the gear tooth surface on the airflow. The simulation analyzed the airflow characteristics around SBGP and the mechanism of the windshield to reduce the windage loss of the gear. It also studied the influence of the windshield clearance and opening size on the windage power loss. Then the orthogonal experimental analysis method was adopted to perform numerical simulation analysis. The windage torque was studied under different clearance values between the windshield and the gear tooth surface, as well as the large end and the small end. The variance analysis was performed on the numerical simulation data. The results showed that when the windshield clearance value was 1 mm and the engagement opening was 30°, the windage torque was the smallest, and the effect of reducing the windage power loss was the best. According to the changes in the pressure, velocity, and turbulent kinetic energy cloud diagram of the flow field in the reducer during multi-group simulation tests, the local optimal windshield configuration was obtained, which provided a method for further research on the multi-objective optimization of the windshield and the windage loss of the gear pair under the oil–gas two-phase flow and also provided a reference for the practical engineering application of the windshield.Yuzhong ZhangLinlin LiZiqiang ZhaoMDPI AGarticlemulti-objective optimizationcomputational fluid dynamicsspiral bevel gear pairwindage power lossdynamic mesh modelwindshieldChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1999, p 1999 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	multi-objective optimization computational fluid dynamics spiral bevel gear pair windage power loss dynamic mesh model windshield Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	multi-objective optimization computational fluid dynamics spiral bevel gear pair windage power loss dynamic mesh model windshield Chemical technology TP1-1185 Chemistry QD1-999 Yuzhong Zhang Linlin Li Ziqiang Zhao Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
description	Based on the theory of computational fluid dynamics (CFD), with the help of the Fluent software and the powerful parallel computing capability of the super cloud computer, the single-phase flow transient simulation calculation of the windage power loss of the engagement spiral bevel gear pair (SBGP) was performed. The two-equation SST <i>k-ω</i> turbulence model based on the assumption of eddy viscosity was adopted, which was improved from the standard <i>k-ε</i> model combined with the Wilcox <i>k-ω</i> model. The SST <i>k-ω</i> turbulence model inherited the respective advantages of the Wilcox <i>k-ω</i> model in the near-wall region and the <i>k-ε</i> model in the free shear layer and could more accurately describe the resistance and separation effect of the gear tooth surface on the airflow. The simulation analyzed the airflow characteristics around SBGP and the mechanism of the windshield to reduce the windage loss of the gear. It also studied the influence of the windshield clearance and opening size on the windage power loss. Then the orthogonal experimental analysis method was adopted to perform numerical simulation analysis. The windage torque was studied under different clearance values between the windshield and the gear tooth surface, as well as the large end and the small end. The variance analysis was performed on the numerical simulation data. The results showed that when the windshield clearance value was 1 mm and the engagement opening was 30°, the windage torque was the smallest, and the effect of reducing the windage power loss was the best. According to the changes in the pressure, velocity, and turbulent kinetic energy cloud diagram of the flow field in the reducer during multi-group simulation tests, the local optimal windshield configuration was obtained, which provided a method for further research on the multi-objective optimization of the windshield and the windage loss of the gear pair under the oil–gas two-phase flow and also provided a reference for the practical engineering application of the windshield.
format	article
author	Yuzhong Zhang Linlin Li Ziqiang Zhao
author_facet	Yuzhong Zhang Linlin Li Ziqiang Zhao
author_sort	Yuzhong Zhang
title	Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
title_short	Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
title_full	Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
title_fullStr	Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
title_full_unstemmed	Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation
title_sort	optimal design of computational fluid dynamics: numerical calculation and simulation analysis of windage power losses in the aviation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1cdaa11b1e3742f793a7bcd48b913c63
work_keys_str_mv	AT yuzhongzhang optimaldesignofcomputationalfluiddynamicsnumericalcalculationandsimulationanalysisofwindagepowerlossesintheaviation AT linlinli optimaldesignofcomputationalfluiddynamicsnumericalcalculationandsimulationanalysisofwindagepowerlossesintheaviation AT ziqiangzhao optimaldesignofcomputationalfluiddynamicsnumericalcalculationandsimulationanalysisofwindagepowerlossesintheaviation
_version_	1718410635660754944

Optimal Design of Computational Fluid Dynamics: Numerical Calculation and Simulation Analysis of Windage Power Losses in the Aviation

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