Deflagration-to-detonation transition in spiral channels

• Published in: Technical physics Vol. 62; no. 10; pp. 1496 - 1499
• Main Authors: Golovastov, S. V., Mikushkin, A. Yu, Golub, V. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-10-2017; Springer; Springer Nature B.V
• Subjects: Channels; Classical and Continuum Physics; Configurations; Deflagration; Detonation; Gases and Liquids; Hydrogen; Physics; Physics and Astronomy
• ISSN: 1063-7842; 1090-6525
• DOI: 10.1134/S1063784217100139

The deflagration-to-detonation transition in hydrogen–air mixtures that fill spiral channels has been studied. A spiral channel has been produced in a cylindrical detonation tube with a twisted ribbon inside. The gas mixture has been ignited by means of a spark gap switch. The predetonation distance versus the twisted ribbon configuration and molar ratio between the gas mixture components has been determined. A pulling force exerted by the detonation tube after a single event of hydrogen–air mixture burnout has been found for four configurations of the twisted ribbon. Conditions under which the use of a spiral tube can be more effective (increase the pulling force) have been formulated.