Influence of the obstacles located in different volumes, filled with combustible mixture, on the propagation of Flame Front (FF) is investigated for a long time. These researches are performed to find out both the dependence of combustion regime on the type of obstacles and possibility to influence on combustion regimes by varying of an obstacle shape. It is known that if the composition of gas mixture is far from concentration limits of ignition the velocity of flame propagation in the presence of obstacles can quickly increase to supersonic values. At studying of quickly accelerated flames it is possible to observe DDT (deflagration to detonation transition), however, the velocity of supersonic combustion wave in the presence of obstacles is often below Chapman-Jouquet velocity. [Rubtsov NM, Sepljarsky BS, Naboko IM, Chernysh VI, Tsvetkov GI (2013) Interaction of Spherical Flames of Hydrogen-Air and Methane-Air Mixtures in the Closed Reactor at the Central Spark Initiation with Close-Meshed Obstacles].
Last date updated on June, 2021