The current experimental setup produces a 2×20 mm slab jet, and reaches a maximum Reynolds number 5×104, corresponding to a jet velocity of 12 m/s.
Fluidized depths of up to 1.9 m in the saturated zone (with refusal on a peat layer) and 2.5 m in the unsaturated zone (no refusal) were attained, using a 1.9-m-long, 50 mm diameter jet operated at 5 13 l s−1.
Ten young female sheep (27.1 ± 4.2 kg) were anesthetized with ketamine, trachotomized and intubated with a 9 mm ID jet Ventilation ETT (Mallinkrodt), with its tip placed 2 cm proximal to the carina.
Under co-flow jets conditions, except for the case L = 75 mm, as the jet spacing increases, the oxidizer flow could be internally diluted to a lower concentration and preheated to a higher temperature, at least 1200 K.
It is found that the substrate has a substantial effect on the last 20 mm of the jet.
In response to these threats, the U.S. Project Engineering Office for Ammunition (PEO Ammo) worked with ARDEC to develop a highly reproducible and well characterized standardized 81 mm shaped charge jet initiation test configuration.
In response to these threats, the U.S. Project Engineering Office for Ammunition (PEO Ammo) have worked with the U.S. Army Armament Research, Development and Engineering Center ARDECC) Energetics and Warheads Division EWDD) to develop a highly reproducible and well characterized standardized 81 mm shaped charge jet initiation test configuration.
Jet exit diameters of 3.5, 9.5 and 21 mm are positioned at jet exit-to-surface distances of 2 5 diameters.
Two different values of jet diameter (4 mm, 8 mm), of air velocity at nozzle exit (110 m/s, 140 m/s), of jet-to-jet spacing (40 mm, 60 mm), of jet-to-plate distance (40 mm, 60 mm) and of nozzle height (20 mm, 60 mm) are considered.
The distance (D) between the plasma torch nozzle exit and the sample plate was 4 mm and the plasma jet temperature was below 30 °C.
