| Title: |
Time-resolved, single-ended laser absorption thermometry and H 2 O, CO 2 , and CO speciation in a H 2 /C 2 H 4 -fueled rotating detonation engine |
| Authors: |
Cassady, Séan J.; Peng, Wen Yu; Strand, Christopher L.; Dausen, David F.; Codoni, Joshua R.; Brophy, Christopher M.; Hanson, Ronald K. |
| Contributors: |
Mechanical and Aerospace Engineering (MAE) |
| Publisher Information: |
Elsevier |
| Publication Year: |
2021 |
| Collection: |
Naval Postgraduate School: Calhoun |
| Subject Terms: |
Laser absorption spectroscopy; Rotating detonation engine; Wavelength modulation spectroscopy |
| Description: |
The article of record as published may be found at http://dx.doi.org/10.1016/j.proci.2020.06.125 ; Proceedings of the Combustion Institute 38 ; Rotating detonation engines (RDEs) require novel diagnostic tools to better understand complex detonation behavior and improve performance. To this end, a single-ended laser absorption sensor for in situ, time-resolved measurements of temperature, H 2 O, CO 2 , and CO concentrations has been developed and deployed within the annulus of a hydrogen/ethylene/air-fed RDE. With a measurement rate of 44 kS/s, the sensor delivers four co-aligned, mid-infrared laser beams into the annular detonation chamber and captures the back-reflected radiation through a single optical port. A ray-tracing optimization algorithm, designed to maximize signal-to-noise ratio and beam-perturbation tolerance, was used to determine the optimal sensor optical configuration. Wavelength-modulation spectroscopy (WMS) further compensated for interference sources in the harsh detonation environment. Time-resolved and time-averaged sensor measurements of gas temperature and species at equivalence ratios of 0.74, 0.87, and 1.03 are presented. ; N00014-15-P-1121 ; Office of Naval Research ; Innovative Scientific Solution, Inc. ; Department of Defense through the National Defense Science and Engineering Graduate (NDSEG) |
| Document Type: |
conference object |
| File Description: |
9 p.; application/pdf |
| Language: |
unknown |
| Relation: |
Faculty & Researcher Publications; https://hdl.handle.net/10945/68009 |
| Availability: |
https://hdl.handle.net/10945/68009 |
| Rights: |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
| Accession Number: |
edsbas.DAB223B7 |
| Database: |
BASE |