Coaxial rocket injector mixing and combustion via mid-infrared laser absorption tomography

被引：0

作者：

Keller, Alex R. ^{[1
]}

Spearrin, R. Mitchell ^{[1
]}

Bendana, Fabio A. ^{[2
]}

Kaialau, Dean K. ^{[2
]}

Perezselsky, Armando A. ^{[2
]}

Cortopassi, Andrew C. ^{[2
]}

机构：

[1] Univ Calif Los Angeles UCLA, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

[2] Aerosp Corp, Prop Sci Dept, El Segundo, CA 90245 USA

来源：

AIAA SCITECH 2024 FORUM | 2024年

关键词：

JET; TEMPERATURE; DYNAMICS; RECESS;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Mixing characteristics of methane-oxygen shear-coaxial single-element rocket injectors were experimentally assessed using laser absorption tomography. The spectroscopic technique enables quantitative and spatially-resolved measurements of carbon monoxide and temperature within the near-field region of coaxial flames, probing mid-infrared rovibrational absorption lines of carbon monoxide (CO) near 5 mu m. Multiple injector designs were examined with differing oxidizer post recess depths to compare mixing characteristics. A tomographic inversion method was applied to obtain radially-resolved distributions of temperature and CO mole fraction for each axial position, from which two-dimensional images of the thermochemical structure are generated. Stoichiometric contours and mixing lengths were extracted from features within the species and temperature profiles to visualize the spatial evolution of CO production.

引用

页数：16

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