Title: Study on temperature distribution characteristics of fuel pools' fire in the core engine cavity based on FDS

Authors: Guanbing Cheng; Xiwei Liu; Zhangyuan Chen

Addresses: College of Aeronautical Engineering, Civil Aviation University of China, 300300, Tianjin, China ' College of Aeronautical Engineering, Civil Aviation University of China, 300300, Tianjin, China ' College of Aeronautical Engineering, Civil Aviation University of China, 300300, Tianjin, China

Abstract: Temperature distribution behaviours in aviation engines are important during the design of the engine's fire protection system. The present paper examines the diffusion characteristics of pools' fuel fire in the core engine cavity. Physical and numerical models of the three pools' fires were established. After the grid size was validated, variations in flame temperature and its shapes were examined. The results show that the temperature variation of pools' fire undergoes increasing and steady stages. In the cavity left area, the left single pool fire temperature is higher than that in double pools. In the cavity middle area, the double pool fire temperature is higher than that in both single pools as the smoke gathers at the casings. In the cavity right area, the single pool temperature is higher than that in double pools. The flame shapes of the double pools undergo floating, inclination, and partially and completely merging stages. The single pool flame originally floats, then slightly inclines.

Keywords: turbofan; core engine cavity; double fuel pools; FDS; fire dynamic simulator; temperature distribution; flame shape.

DOI: 10.1504/IJCSM.2024.140914

International Journal of Computing Science and Mathematics, 2024 Vol.20 No.2, pp.149 - 168

Received: 21 Jan 2024
Accepted: 07 May 2024
Published online: 03 Sep 2024 *

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