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Influence of the pressure relief door area and aspect ratio on discharge and force characteristics

Shiyu Feng (College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Chenchen Wang (College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Xiaotian Peng (College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China)
Yan Yan (School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, Xi’an, Shaanxi Province, China)
Yang Deng (AECC Commercial Aircraft Engine Co Ltd, Shanghai, China)
Jun Chen (AECC Commercial Aircraft Engine Co Ltd, Shanghai, China)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 18 September 2019

Issue publication date: 22 January 2020

Abstract

Purpose

The purpose of this paper is to analyze the effects of the PRD geometric parameters, including the area and aspect ratio, on the discharge and force characteristics of pressure relief process under various plenum compartment pressures and Mach numbers.

Design/methodology/approach

Under various plenum compartment pressures and Mach numbers, the effect of the area and aspect ratio on the discharge and force characteristics of the PRD are numerically investigated via a three-dimensional steady Reynolds-averaged Navier–Stokes equations solver based on structured grid technology.

Findings

When the aspect ratio remains constant, the discharge coefficient CD, thrust coefficient CT and moment coefficient CM are not affected by the PRD. When the area is constant, the aspect ratio dramatically impacts the discharge and force characteristics because the aspect ratio increases, the discharge coefficient CD of the PRD decreases, and the thrust coefficient CT and the moment coefficient CM both increase. When the aspect ratio is 2, the discharge coefficient CD decreases by 14.7 per cent, the thrust coefficient CT increases by 10-15 per cent, and the moment coefficient CM increases by 10-23 per cent compared with when the aspect ratio is 1.

Practical implications

This study provides detailed data and conclusions for nacelle PRD researchers and actual engineering applications.

Originality/value

On the basis of considering the influence of operating conditions on the discharge and force characteristics of the nacelle PRD, the impact of geometric parameters, including the area and aspect ratio on the discharge and force characteristics is comprehensively considered.

Keywords

Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities (kfjj20180108) and National Natural Science Foundation of China (U1933121). A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Citation

Feng, S., Wang, C., Peng, X., Yan, Y., Deng, Y. and Chen, J. (2020), "Influence of the pressure relief door area and aspect ratio on discharge and force characteristics", Aircraft Engineering and Aerospace Technology, Vol. 92 No. 2, pp. 107-116. https://doi.org/10.1108/AEAT-03-2019-0038

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited