OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa
This study focuses on the application of OH planar laser-induced fluorescence (OH-PLIF) in high-pressure rocket combustion conditions, up to 7.0 MPa. The signal to noise ratio of PLIF degrades in high-pressure combustion owing to effects such as line broadening and interference from intense chemilum...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2019-07-01
|
| Series: | Journal of Thermal Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jtst/14/2/14_2019jtst0018/_pdf/-char/en |
| _version_ | 1819183204735647744 |
|---|---|
| author | Yasuhiro HIGUCHI Kiyonori TAKEUCHI Yoshio NUNOME Sadatake TOMIOKA Kazuki SAKAKI Taku KUDO Akihiro HAYAKAWA Hideaki KOBAYASHI |
| author_facet | Yasuhiro HIGUCHI Kiyonori TAKEUCHI Yoshio NUNOME Sadatake TOMIOKA Kazuki SAKAKI Taku KUDO Akihiro HAYAKAWA Hideaki KOBAYASHI |
| author_sort | Yasuhiro HIGUCHI |
| collection | DOAJ |
| description | This study focuses on the application of OH planar laser-induced fluorescence (OH-PLIF) in high-pressure rocket combustion conditions, up to 7.0 MPa. The signal to noise ratio of PLIF degrades in high-pressure combustion owing to effects such as line broadening and interference from intense chemiluminescence. The OH(2,0) band excitation method was applied to obtain the OH(2,1) fluorescence emitted near 290 nm and filter out the intense OH(0,0) band chemiluminescence emitted near 308 nm. The gaseous H2/O2 (GH2/GO2) jet diffusion flame was formed using a recessed coaxial shear injector. The GH2/GO2 injection Reynolds number, Re (ReH2/ReO2 ≈ 2320/22800–4660/45600), was varied to examine the variation of the flame structure and reaction zone thickness under each pressure condition Pc, and Re injection condition. In addition, the variation of the experimentally derived full width at half maximum (FWHM) of the radial OH distribution, δOH, with the Damköehler number, Da, was compared with that of the simulated FWHM of the OH mole fraction, δOH-SIM. The OH distribution was clearly observed in the instantaneous PLIF image while eliminating the intense OH chemiluminescence even in the highest pressure condition of 7.0 MPa, which is a pressure higher than any of the previous OH-PLIF studies conducted on rocket combustion. The flame structure showed the typical characteristics of a turbulent jet diffusion flame and depended on Re rather than on the chamber pressure Pc. The variation of δOH with Da corresponded qualitatively with δOH-SIM and showed the characteristics of flame stretch in the vicinity of the injector. |
| first_indexed | 2024-12-22T22:58:19Z |
| format | Article |
| id | doaj.art-1129960dcb5847c7bcc7d05627ba32eb |
| institution | Directory Open Access Journal |
| issn | 1880-5566 |
| language | English |
| last_indexed | 2024-12-22T22:58:19Z |
| publishDate | 2019-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Thermal Science and Technology |
| spelling | doaj.art-1129960dcb5847c7bcc7d05627ba32eb2022-12-21T18:09:45ZengThe Japan Society of Mechanical EngineersJournal of Thermal Science and Technology1880-55662019-07-01142JTST0018JTST001810.1299/jtst.2019jtst0018jtstOH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPaYasuhiro HIGUCHI0Kiyonori TAKEUCHI1Yoshio NUNOME2Sadatake TOMIOKA3Kazuki SAKAKI4Taku KUDO5Akihiro HAYAKAWA6Hideaki KOBAYASHI7Institute of Fluid Science, Tohoku UniversityInstitute of Fluid Science, Tohoku UniversityResearch and Development Directorate, Japan Aerospace Exploration AgencyResearch and Development Directorate, Japan Aerospace Exploration AgencyResearch and Development Directorate, Japan Aerospace Exploration AgencyInstitute of Fluid Science, Tohoku UniversityInstitute of Fluid Science, Tohoku UniversityInstitute of Fluid Science, Tohoku UniversityThis study focuses on the application of OH planar laser-induced fluorescence (OH-PLIF) in high-pressure rocket combustion conditions, up to 7.0 MPa. The signal to noise ratio of PLIF degrades in high-pressure combustion owing to effects such as line broadening and interference from intense chemiluminescence. The OH(2,0) band excitation method was applied to obtain the OH(2,1) fluorescence emitted near 290 nm and filter out the intense OH(0,0) band chemiluminescence emitted near 308 nm. The gaseous H2/O2 (GH2/GO2) jet diffusion flame was formed using a recessed coaxial shear injector. The GH2/GO2 injection Reynolds number, Re (ReH2/ReO2 ≈ 2320/22800–4660/45600), was varied to examine the variation of the flame structure and reaction zone thickness under each pressure condition Pc, and Re injection condition. In addition, the variation of the experimentally derived full width at half maximum (FWHM) of the radial OH distribution, δOH, with the Damköehler number, Da, was compared with that of the simulated FWHM of the OH mole fraction, δOH-SIM. The OH distribution was clearly observed in the instantaneous PLIF image while eliminating the intense OH chemiluminescence even in the highest pressure condition of 7.0 MPa, which is a pressure higher than any of the previous OH-PLIF studies conducted on rocket combustion. The flame structure showed the typical characteristics of a turbulent jet diffusion flame and depended on Re rather than on the chamber pressure Pc. The variation of δOH with Da corresponded qualitatively with δOH-SIM and showed the characteristics of flame stretch in the vicinity of the injector.https://www.jstage.jst.go.jp/article/jtst/14/2/14_2019jtst0018/_pdf/-char/enhigh-pressure combustionlaser-induced fluorescencejet diffusion flamechemiluminescenceoh(2,0) band excitation |
| spellingShingle | Yasuhiro HIGUCHI Kiyonori TAKEUCHI Yoshio NUNOME Sadatake TOMIOKA Kazuki SAKAKI Taku KUDO Akihiro HAYAKAWA Hideaki KOBAYASHI OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa Journal of Thermal Science and Technology high-pressure combustion laser-induced fluorescence jet diffusion flame chemiluminescence oh(2,0) band excitation |
| title | OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa |
| title_full | OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa |
| title_fullStr | OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa |
| title_full_unstemmed | OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa |
| title_short | OH planar laser-induced fluorescence measurement for H2/O2 jet diffusion flames in rocket combustion condition up to 7.0 MPa |
| title_sort | oh planar laser induced fluorescence measurement for h2 o2 jet diffusion flames in rocket combustion condition up to 7 0 mpa |
| topic | high-pressure combustion laser-induced fluorescence jet diffusion flame chemiluminescence oh(2,0) band excitation |
| url | https://www.jstage.jst.go.jp/article/jtst/14/2/14_2019jtst0018/_pdf/-char/en |
| work_keys_str_mv | AT yasuhirohiguchi ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT kiyonoritakeuchi ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT yoshionunome ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT sadataketomioka ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT kazukisakaki ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT takukudo ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT akihirohayakawa ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa AT hideakikobayashi ohplanarlaserinducedfluorescencemeasurementforh2o2jetdiffusionflamesinrocketcombustionconditionupto70mpa |