Experimental study of flame acceleration and the deflagration-to-detonation transition under conditions of transverse venting
| Autor: | S.B. Dorofeev, V.I. Alekseev, Mike Kuznetsov, Yu. Yankin |
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| Rok vydání: | 2001 |
| Předmět: |
Premixed flame
Deflagration to detonation transition Chemistry General Chemical Engineering Detonation Energy Engineering and Power Technology Mechanical engineering Mechanics Management Science and Operations Research Critical value Industrial and Manufacturing Engineering Expansion ratio Transverse plane Acceleration Control and Systems Engineering Tube (fluid conveyance) Safety Risk Reliability and Quality Food Science |
| Zdroj: | Journal of Loss Prevention in the Process Industries. 14:591-596 |
| ISSN: | 0950-4230 |
| DOI: | 10.1016/s0950-4230(01)00051-1 |
| Popis: | Results of experiments on critical conditions for flame acceleration and the deflagration-to-detonation transition in tubes with transverse venting are presented. Tests were made with hydrogen mixtures in two tubes (inner diameter of 46 and 92 mm) with obstacles. Ratios of vent area to total tube area were 0.2 and 0.4. Venting was shown to influence flame acceleration significantly. The greater the vent ratio, the more reactive the mixture necessary for development of fast flames. Critical conditions for flame acceleration in tubes with venting, expressed through a critical mixture expansion ratio σcr, were found to be σcr/σ0∼1+2α, where σ0 is the critical value for a closed tube. Critical conditions for detonation onset in a vented tube were found to be very close to those in a closed tube with similar configuration of obstacles. |
| Databáze: | OpenAIRE |
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