氢燃烧室边界层回火机制和预测方法综述

doi:10.7527/S1000-6893.2024.30952

Abstract

Abstract:

In the pursuit of a carbon-neutral society， hydrogen， as a zero-carbon fuel， has gained significant attention in aviation propulsion systems. Hydrogen has a higher flame propagation speed and a thinner flame thickness， which increases the risk of flashback in the design and operation of hydrogen-fueled combustor. The widely used micro-mixer nozzle effectively prevents core flow flashback by increasing axial velocity. However， the boundary layer flashback remains a challenging issue in the hydrogen-fueled combustor. This paper gives a review of the research on the boundary layer flashback of hydrogen-fueled combustor. The flame propagation characteristics and unique molecular transport properties of hydrogen are examined. Experimental and numerical simulations for non-swirling and swirling boundary layer flashback are reviewed. The flashback criteria on the laminar and turbulent boundary layer developed over recent decades are summarized. The fast flashback prediction method is introduced. Current challenges in the research on boundary layer flashback in hydrogen-fueled combustors， and the future development of boundary layer flashback criterion and modeling for premixed hydrogen flames is also discussed.

Key words: hydrogen combustion, boundary layer flashback, differential diffusion, flashback mechanism, flashback criteria

CLC Number:

V231.2

Xiaoxu ZHANG, Wei XIAO, Jun CAO, Wei LI, Hua ZHOU, Zhuyin REN. Review of mechanism and prediction model of boundary layer flashback in hydrogen-fueled combustor[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(9): 630952.

Figures/Tables 17

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Table 1

Fig.10

Fig.11

Table 2

Development of laminar BLF criteria

判据提出人与提出年份

回火判据形式

验证实验

核心假设与理论

Putnam和Jensen^［48］，1948

$P e f l o w ≤ P e f l a m e 2 8 K 1 1 - K P e f l a m e$

定性预测趋势

层流管道回火实验

临界速度梯度

Wohl^［45］，1953

$g ≤ g c = C S L δ f$

定性预测趋势

层流管道回火实验

平板边界层回火实验

临界速度梯度

Berlad和Potter^［46］，1957

$g ≤ g c = C S L δ q$

定性预测趋势

层流管道回火实验

平板边界层回火实验

临界速度梯度

Table 2

Table 3

Development of turbulent BLF criteria

判据提出人与提出年份	回火判据形式	验证实验	核心假设与理论
Khitrin等^［47］，1965	$P e f l a m e ≥ δ p D R e 1.8 P r$ 定性预测趋势	层流与湍流管道回火实验甲烷空气火焰 T_u=293~673 K p=1 atm	临界速度梯度
Lin等^［50］，2013	$g ≤ g c = S T L e × δ f$ 定量预测回火极限	湍流管道回火实验 X（H₂）=50% T_u=293~673 K p=1~15 atm	临界速度梯度
Kalantari等^［51］，2016	$D a = C L e 1.68 P e f l a m e 1.91 T u T 0 2.57$ · $T t i p T 0 - 0.49 P P 0 - 2.1 ≥ 1$ 定性预测趋势	湍流管道回火实验氢气空气火焰 T_u=300~500 K p=3~8 atm	临界速度梯度
Hoferichter等^［52-53］，2017	$U ≤ U C, F B = 2.172 7 S T, m a x T a d T u - 1$ 定量预测回火极限	湍流槽道回火实验氢气空气火焰 T_u=293~673 K p=1 atm	边界层分离
Ebi等^［38］，2021	$K a F B = τ f l a m e τ f l o w ≤ 1$ 定性预测趋势	旋流钝体回火实验氢气/甲烷空气火焰 X（H₂）=50%~100% T_u=293~523 K p=1~7.5 atm	临界速度梯度
Novoselov等^［54］，2022	$S L, e x t 2 α g ≥ 1$ 定量预测回火极限	旋流钝体回火实验氢气/甲烷空气火焰 X（H₂）=50%~100% T_u=293~523 K p=1~7.5 atm	临界速度梯度

Table 3

Fig.12

Fig.13

Fig.14

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算例	回火速度/（m·s^-1）
算例	实验值	T_wall=500 K	绝热壁面
Soret，DD	0.94	0.845 7	1.023 2
Soret，Le=1		0.842 5	0.889 1
w/o Soret，DD		0.527 6	0.610 8
w/o Soret，Le=1		0.240 2	0.269 2

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Review of mechanism and prediction model of boundary layer flashback in hydrogen-fueled combustor

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