Open AccessChemistry in plumes of high-flying aircraft with H2 combustion engines: a modelling study
Author(s) -
G. Weibring,
R. Zellner
Publication year - 1994
Publication title -
annales geophysicae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.522
H-Index - 93
eISSN - 1432-0576
pISSN - 0992-7689
DOI - 10.1007/s00585-994-0403-y
Subject(s) - plume , trace gas , combustion , atmospheric sciences , meteorology , supersonic speed , environmental science , atmosphere (unit) , aerospace engineering , atmospheric chemistry , chemistry , geology , physics , engineering , ozone
Recent discussions on high-speed civil\udtransport (HSCT) systems have renewed the interest in the chemistry of\udsupersonic-aircraft plumes. The engines of these aircraft emit large\udconcentrations of radicals like O, H, OH, and NO. In order to study the effect\udof these species on the composition of the atmosphere, the detailed chemistry of\udan expanding and cooling plume is examined for different expansion models.\ud
For a representative flight at 26 km the computed trace gas\udconcentrations do not differ significantly for different models of the expansion\udbehaviour. However, it is shown that the distributions predicted by all these\udmodels differ significantly from those adopted in conventional meso-scale and\udglobal models in which the plume chemistry is not treated in detail. This\udapplies in particular to the reservoir species HONO and H2O2