scholarly journals Temperature measurement in combustion flow field with femtosecond laser-induced filament

2020 ◽  
Vol 69 (23) ◽  
pp. 234207
Author(s):  
Shuai-Yao Li ◽  
Da-Yuan Zhang ◽  
Qiang Gao ◽  
Bo Li ◽  
Yong He ◽  
...  
Keyword(s):  
Flow Field ◽  
Femtosecond Laser ◽  
Temperature Measurement ◽  
Combustion Flow

Applicability of Femtosecond Laser Electronic Excitation Tagging in Combustion Flow Field Velocity Measurements

2018 ◽  
Vol 72 (12) ◽  
pp. 1807-1813 ◽  
Author(s):  
Dayuan Zhang ◽  
Bo Li ◽  
Qiang Gao ◽  
Zhongshan Li
Keyword(s):  
Flow Field ◽  
Femtosecond Laser ◽  
Electronic Excitation ◽  
Flow Fields ◽  
Velocity Measurements ◽  
Molecular Tagging Velocimetry ◽  
Molecular Tagging ◽  
Field Velocity ◽  
Combustion Flow ◽  
Better Than

Femtosecond laser electronic excitation tagging (FLEET) is a molecular tagging velocimetry technique that can be applied in combustion flow fields, although detailed studies of its application in combustion are still needed. We report the applicability of FLEET in premixed CH4–air flames. We found that FLEET can be applied in all of the combustion areas (e.g., the unburned region, the burned region and the reaction zone). The FLEET signal in the unburned region is significantly higher than that in the burned region. This technique is suitable for both lean and rich CH4–air combustion flow fields and its performance in lean flames is better than that in rich flames.

Absorption Model of Wavelength Modulation Spectroscopy in Combustion Flow Field

2019 ◽  
Vol 46 (7) ◽  
pp. 0711001
Author(s):  
张步强 Buqiang Zhang ◽  
许振宇 Zhenyu Xu ◽  
刘建国 Jianguo Liu ◽  
夏晖晖 Huihui Xia ◽  
聂伟 Wei Nie ◽  
...  
Keyword(s):  
Flow Field ◽  
Wavelength Modulation Spectroscopy ◽  
Absorption Model ◽  
Wavelength Modulation ◽  
Modulation Spectroscopy ◽  
Combustion Flow

scholarly journals Research on combustion flow field imaging method based on ray casting algorithm

AIP Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 055022 ◽  
Author(s):  
Min Yao ◽  
Yueqi Zhang ◽  
Min Zhao ◽  
Ruipeng Guo ◽  
Jun Xu
Keyword(s):  
Flow Field ◽  
Imaging Method ◽  
Ray Casting ◽  
Combustion Flow ◽  
Ray Casting Algorithm ◽  
Field Imaging

Radiation temperature measurement of optical thick hypersonic combustion flow

2017 ◽  
Author(s):  
Bin Qi ◽  
Li-song Zhang ◽  
Wei Dong ◽  
Ning Tian ◽  
Ling Zhao ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Radiation Temperature ◽  
Combustion Flow

Feature-Section-Criterion for Predicting Lean Blowout and Comparison Research

2013 ◽  
Author(s):  
Zhibo Zhang ◽  
Hongtao Zheng ◽  
Honglei Yang ◽  
Ren Yang ◽  
Qian Liu ◽  
...  
Keyword(s):  
Experimental Data ◽  
Flow Field ◽  
New Method ◽  
Engineering Applications ◽  
Lean Blowout ◽  
Comparison Research ◽  
Annular Combustor ◽  
Combustion Flow ◽  
Feature Section

Lean blowout (LBO) plays an important role in combustor performance. A new method named Feature-Section-criterion (FSC) for predicting the LBO of annular combustor has been put forward and expounded in this paper. A CFD software FLUENT has been used to simulate the combustion flow field of an annular combustor. The process of blowout and effects of flow split among swirlers and primary holes have been researched by using of FSC. The result shows that the predictions of FSC are in agreement with corresponding experimental data. So this method for predicting lean blowout is reliable and can be used for engineering applications.

scholarly journals Parametric effects on the combustion flow field of a typical strut-based scramjet combustor

2011 ◽  
Vol 56 (35) ◽  
pp. 3871-3877 ◽  
Author(s):  
Wei Huang ◽  
ZhenGuo Wang ◽  
ShiBin Luo ◽  
Jun Liu
Keyword(s):  
Flow Field ◽  
Scramjet Combustor ◽  
Parametric Effects ◽  
Combustion Flow

scholarly journals A Preliminary Calculation of the Combustion Recirculating Flow Behind Flame-Holders

1985 ◽  
Author(s):  
C. F. Zeng ◽  
J. X. Zhao ◽  
Z. T. Ding
Keyword(s):  
Flow Field ◽  
Equivalence Ratio ◽  
Variable Density ◽  
Combustion Model ◽  
Preliminary Calculation ◽  
Flame Spreading ◽  
Inlet Velocity ◽  
Recirculating Flow ◽  
Combustion Flow ◽  
Recirculation Length

In this paper the numerical method is adopted to predict the combustion recirculating flow behind flame-holders. A modified k-ε turbulence model and Magnussen’s combustion model are employed. Becouse of the large variation of density in combustion flow field, the influences of variable density have been considered. The results predicted include: the combustion recirculating flow field and the flame spreading; the variation of recirculation length with equivalence ratio, and inlet velocity, etc. All of these are qualitatively good comparing with experimental results.

Applications of measurement techniques based on lasers in combustion flow field diagnostics

2018 ◽  
Vol 11 (4) ◽  
pp. 531-549
Author(s):  
刘晶儒 LIU Jing-ru ◽  
胡志云 HU Zhi-yun
Keyword(s):  
Flow Field ◽  
Measurement Techniques ◽  
Combustion Flow

Background Noise Suppress Method for Hydroxyl Tagging Velocimetry in Combustion Flow Field

2019 ◽  
Vol 46 (3) ◽  
pp. 0309001
Author(s):  
邵珺 Shao Jun ◽  
叶景峰 Ye Jingfeng ◽  
王晟 Wang Sheng ◽  
胡志云 Hu Zhiyun ◽  
方波浪 Fang Bolang ◽  
...  
Keyword(s):  
Flow Field ◽  
Background Noise ◽  
Combustion Flow ◽  
Hydroxyl Tagging Velocimetry

2D reconstruction of combustion flow field temperature based on multiple absorption lines

2019 ◽  
Vol 48 (3) ◽  
pp. 306004
Author(s):  
宋俊玲 Song Junling ◽  
饶 伟 Rao Wei ◽  
王广宇 Wang Guangyu ◽  
辛明原 Xin Mingyuan
Keyword(s):  
Flow Field ◽  
Absorption Lines ◽  
Field Temperature ◽  
Multiple Absorption ◽  
Combustion Flow
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