Detonation in heptane/oxygen/air mixtures in a pulsed combustor
The present paper considers the propagation dynamics of combustion wave in the pulsed combustor of small length (L =620 mm) where pulsing heterogeneous detonation in air-diluted heptane and oxygen mixtures is implemented.It is found that detonation combustion and deflagration-to-detonation transition are influenced by the initial mixture temperature, the cell-structure obstacle, and the fuel-air equivalent ratio.It is shown that depending on the above factors, in heptane and oxygen mixtures detonation is generated at distances of 100-250 mm from the ignition initiator, whereas in air-diluted heptane and oxygen mixtures in the air-to-oxygen ratios air/O2 =1.4...5.0-at distances of 400-600 mm.The results of this research illustrate the possibility to obtain controlled pulsing detonation in the small-length tube.
combustor pulsing detonation deflagration-to-detonation transition wave velocity thermal activation accelerator mixture composition
M.S.ASSAD O.G.PENYAZKOV
A.V.Luikov Heat and Mass Transfer Institute of National Academy of Sciences of Belarus,Minsk,Belarus,st.P.Brovki 15,Minsk,220072,Republic of Belarus
国际会议
成都
英文
284-286
2013-09-24（万方平台首次上网日期，不代表论文的发表时间）