Flame Acceleration in Volume with Turbulence Promoters

3 Flame Acceleration in Volume with Turbulence Promoters 

Flame acceleration caused by turbulence promoting obstacles is especially efficient in tubes or closed vessels. In open volumes, obstacles met in the path of the flame are most often surface pipelines, plants, or building structures. In industrial zones, fuel-air mixture (FAM) combustion has caused the generation of powerful shock waves, which proves the practicability of fast local combustion of a partial or even total volume of FAM. The possibility of combustion transition to detonation in a woodland area has been verified in practice. 

By now, some experiments covering widespread scenarios of HAM combustions that allow estimating the obstacle effect on the explosion characteristics have been carried out. In [8-10] the experiments were performed at (j) = 1, Pq = 0.1 MPa, To = 293 K. Two coaxial tubes of = 40 mm and d2 = 40 and 80 mm diameters and Li = 500 mm and L2 = 2,500 mm lengths have been connected in series and separated 

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