Fire accidents in confined regions of public recreation theatres, malls, railroad cars and in tunnels are influenced by atmospheric, confinement and fuel charge conditions. Obstacles in the confinements are found to have a significant impact on flame propagation. Careful design of confinement geometry can avoid accidents or slow down the flame propagation. Current experimental investigation is intended to find the effect of obstacle interaction, free obstacle space, non-reacted gas flow, and turbulence at the near-wall on flame acceleration. Two rows of bench shaped obstacles enhance the flame speed in the obstacle free path. Turbulence intensity is higher in the local regions where flow is high subsonic and mildly supersonic, which enhances the flame speed.

International Seminar on Fire and Explosion Hazards (9; 2019; Saint Petersburg, Russia). Proceedings of the Ninth International Seminar on Fire and Explosion Hazards [Электронный ресурс]. Vol. 1: 21-26 April 2019, Saint Petersburg, Russia / Peter the Great St. Petersburg Polytechnic University, Autonomous Non-Profit Organization "Fire and Explosion Safety", Gefest Holding Ltd ; [edited by A. Snegirev [et al.]. — Электрон. текстовые дан. (1 файл : 118 Мб). — Saint Petersburg, 2019. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/k19-45.pdf>. — <URL:http://doi.org/10.18720/SPBPU/2/k19-45>.