Flame dynamics, three-dimensional structure and flow field of premixed H2/air flame with heat loss

Xiaobo Shen, Weiye Wang, Yunsheng Ma and Jennifer X. Wen

Renewable Energy, 2025, vol. 245, issue C

Abstract: In this paper, the large eddy simulation (LES) model of OpenFOAM was used to study the flame propagation characteristics of H2/air premixed flame in a closed tube with an aspect ratio of 12. The flame phenomena observed in the experiment, such as spherical flame, finger-shaped flame, flat flame, classical tulip flame, T-shaped flame, and distorted tulip flame, were reproduced through numerical simulation. The mechanism of flame propagation was studied. The effects of different wall conditions and dimensional conditions were compared. The parameters, such as temperature, turbulence intensity, velocity, and laminar flame velocity was well characterized and analyzed to interpret the flame deformation. The numerical model provides good prediction on the flame front velocity and overpressure at the three-dimensional isothermal wall condition with heat loss, which could be adopted as a tool for flame investigation.

Keywords: H2/air; Premixed flame; LES; Flame deformation; Turbulence (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:245:y:2025:i:c:s0960148125004677

DOI: 10.1016/j.renene.2025.122805

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