Study on Behavior of Methane/Oxygen Gas Detonation Near Propagation Limit in Small Diameter Tube: Effect of Tube Diameter

Experimental study of detonation limits in methane-oxygen mixtures: Determining tube scale and initial pressure effects

“…When the structure of detonation is single-headed, the characteristic dimension is the circumference of the tube, i.e., πD. This criterion was verified by other researchers, e.g., Dupré et al [62], Yoshida et al [36], Fischer et al [63] and Gao et al [30]. As can be seen from Table 3, D/λ ~ 0.41, which approaches well to the detonation limit criterion λ =πD within the experimental uncertainties.…”

“…As the detonation limit is reached, a variety of unstable propagation phenomena occur, e.g., No [35] 2015 3 50.8 59.1 12. Yoshida et al [36] 2016 6 5.8/8/10 1034.5 13. Jackson et al [37] 2016 30 4.1 7317.1 14.…”

“…For unstable mixtures, the detonation propagation limit criterion λ = πD holds in macro-scale ducts. Yoshida et al [36] proposed a factor (α) that determines the detonation limit, i.e., α = πD/λ. When α equals to 1, the detonation limit is approached.…”

Experimental investigation on the properties of liquid film breakup induced by shock waves*

“…The aerosol fuel clouds containing droplets may burn faster than an optimally homogeneous vapor/air mixture. [15][16][17][18][19] Many studies have been performed to regard the droplet size and combustion characteristics of liquid fuels. [20,21] Liu et al [22] investigated the influence of droplet size on the explosion parameters of n-hexane/air mixture.…”

Experimental investigation of near-limit gaseous detonations in small diameter spiral tubing

“…Hence, experimental data on detonation limits have been measured extensively for many explosives in different geometrical configurations [5][6][7][8].…”