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在环缝-喷孔对撞式喷注模型发动机上，采用H2/O2热射流切向喷注的起爆方式，进行了H2/Air组合的连续旋转爆震试验，试验成功起爆并实现了爆震波的持续旋转传播。切向喷注的热射流并没有直接诱导形成旋转爆震波，从点火到形成稳定传播的旋转爆震波之间存在时间间隔。高频信号时频分析结果表明，在该试验工况下，旋转爆震波的传播过程非常稳定，其传播频率在5.35-5.85kHz之间，平均传播频率为5.61kHz，...
Molecular hydrogen (H2) emissions and their isotopic signatures (H/D) from a motor vehicle: implications on atmospheric H2
Molecular hydrogen (H2) isotopic signatures (H/D) a motor vehicle atmospheric H2
2010/8/13
Molecular hydrogen (H2), its isotopic signature (deuterium/hydrogen, δD), carbon monoxide (CO), and other compounds were studied in the exhaust of a passenger car engine fuelled with gasoline or metha...
Isotope effect in the formation of H2 from H2CO studied at the atmospheric simulation chamber SAPHIR
Isotope effect the formation of H2 from H2CO the atmospheric simulation chamber SAPHIR
2010/8/13
Formaldehyde of known, near-natural isotopic composition was photolyzed in the SAPHIR atmosphere simulation chamber under ambient conditions. The isotopic composition of the product H2 was used to det...
Multi-species inversion of CH4, CO and H2 emissions from surface measurements
Multi-species CH4 CO H2 emissions surface measurements
2009/8/7
In order to study the spatial and temporal variations of the emissions of greenhouse gases and of their precursors, we developed a data assimilation system and applied it to infer emissions of CH4, CO...