Flame attachment lengths

In-Line Flame Arrester A flame arrester which is fitted with two pipe connections, one on each side of the flame arrester element. An in-line flame arrester may be either a deflagradon or a detonation flame arrester. An in-line arrester that is installed on a vessel vent nozzle with a short length of pipe attached to the discharge (atmospheric) side is sometimes also called a pipe-away flame arrester. 

Liftoff height with jet velocity in free jet [10] (H attached flame length, quenching distance, Hp liftoff height, L premixed flame length). 

The base of the jet flame is usually not attached to the release point, due to the high velocity and richness of the fuel near the heat source. This lift-off distance has been measured on flares to be 20% of jet length. This effect is important in reducing the predicted radiation level on the leak source, which might otherwise cause a small leak to escalate to a full-bore failure. 

PIC Plastic Igniter Cord. A fuse burning with an intense flame progressively along its length. Used for igniting the match attached to shells, etc. Different burning speeds are available from 49 sm to 3.3 sm ... 

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