[Detonation temperature measurement of epoxypropane using instantaneous spectrum method]
Ying Li1, Ping Li, Hai-Bo Xiao
1Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|June 10, 2008
Summary
Researchers measured the detonation temperature of epoxypropane at 2,416 K. This provides crucial experimental data for understanding the deflagration to detonation transition (DDT) process in fuels.
Area of Science:
- Chemical Engineering
- Combustion Science
- Spectroscopy
Context:
- Investigating the deflagration to detonation transition (DDT) in epoxypropane.
- Addressing challenges in synchronizing measurement systems and preventing false triggers during high-speed events.
Purpose:
- To acquire the instantaneous emission spectrum of epoxypropane during the DDT phase.
- To determine the detonation temperature of epoxypropane through spectral analysis.
Summary:
- An advanced spectroscopic system, including an intensified charge-coupled-device detector and a digital delay generator, was employed to capture the emission spectrum of epoxypropane.
- The system successfully synchronized measurements and avoided false triggers, enabling the acquisition of spectra at 2 microseconds exposure and 0.2 nm resolution.
- Pressure transducers monitored the DDT process, and spectral data, after intensity correction, were fitted to Planck's blackbody formula to derive a detonation temperature of 2,416 K.
Impact:
- Provides the first experimental detonation temperature for epoxypropane.
- Offers critical data for validating computational models of combustion and detonation phenomena.
- Contributes to a deeper understanding of the microscopic mechanisms governing the DDT process in energetic materials.
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