航空发动机燃烧室辐射传热特性研究

Translated title of the contribution: Study on radiation heat transfer characteristics of aeroengine combustion chamber

Pengyu Shi, Ming Li, Qianqian Yu, Zhisheng Wang, Lishi Ren, Wei Fan

Research output: Contribution to journalArticlepeer-review

Abstract

The

non-ash-body characteristics. In this paper, based on the OpenFOAM platform, a numerical study on multi-field coupled turbulence-combustion-radiation radiative heat transfer was carried out for a certain type of aero-engine combustion chamber using the mean weighted sum of grey gas (WSGG) gas radiation model, which can accurately describe the non-ash characteristics of the gas. The results show that the radiation heat transfer characteristics are influenced by several factors such as equivalent ratio, combustion pressure and wall emissivity, among which the equivalent ratio is dominant. Increasing the equivalence ratio from 0.11 to 0.4 resulted in a 189% increase in average incident radiation at the combustion chamber wall and a 233% increase in average incident radiation at the exit. Increasing the equivalent ratio, combustion pressure or wall emissivity will increase the average radiation intensity in the combustion chamber and the inhomogeneity of radiation distribution at the exit of the combustion chamber. The radial radiation distribution factor (RRDF) also increases with the increase of equivalent ratio, combustion pressure and wall emissivity.

Translated title of the contributionStudy on radiation heat transfer characteristics of aeroengine combustion chamber
Original languageChinese (Traditional)
Pages (from-to)697-706
Number of pages10
JournalXibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
Volume42
Issue number4
DOIs
StatePublished - Aug 2024

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