Hot surface ignition of n-hexane in air

Experimental and numerical study of the ignition of hydrogen-air mixtures by a localized stationary hot surface

“…The present study focuses on a stationary localized surface with an imposed heating rate. Similar configurations were studied by Roth et al [7,8], Beyer and Markus [9], Dubaniewicz [10], Dubaniewicz et al [11], Dubaniewicz et al [3], Bothe et al [12], Homan [13], Boettcher et al [14], Boettcher [15], and Menon et al [16]. These previous studies demonstrated the importance of the mixture chemical properties and surface properties (e.g.…”

“…The ignition experiments were performed in a closed vessel with a volume of 2.2 L. This combustion facility has been previously described in detail by Boettcher et al [14], Boettcher [15] and Menon et al [16]. Briefly, the vessel inner dimensions were 114 mm x 114 mm x 171 mm.…”

“…In the low-temperature regime, Boettcher et al [17] and Melguizo-Gavilanes et al [18] showed that the heating rate imposed on an extended hot surface determines the type of reaction that the reactive mixture experiences, namely slow oxidation or rapid explosion. For a small hot surface, Menon et al [16] showed that for n-hexane-air mixtures, the chemical processes characteristic of the negative temperature coefficient region influence the ignition behavior. In a previous study by Mével et al [19], the effect of the hot surface heating rate on the ignition threshold and ignition location (relative to the hot surface) was investigated, using a commercial glow plug.…”

Hot surface ignition of stoichiometric hydrogen-air mixtures

“…where the rate at which the mixture is heated can influence the ignition threshold due to low temperature pathways as shown by Menon et al [21]. Such effects may be important for very lean hydrogen-air mixtures at low heating rates, however we did not examine these situations in the present study.…”

Research on the hot surface ignition of hydrogen-air mixture under different influencing factors

“…Boettcher 20 researched the effect of hot surface area on ignition temperature using one-step and detailed chemical reactive models. Marengo et al 21 23 measured the hot-surface temperature at the point of ignition of n-hexane/air mixture in a rectangular prism combustion chamber using a fast heating glow plug for equivalence ratios ranging from 0.6 to 3 and chamber pressures varying from 25 to 100 kPa. They founded that the hot-surface temperature resulting in ignition was weakly sensitive to equivalence ratio, on the contrary, the chamber pressure had a stronger influence on it.…”