کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
240933 | 1427930 | 2005 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Detonation properties of stoichiometric gaseous n-heptane/oxygen/argon mixtures Detonation properties of stoichiometric gaseous n-heptane/oxygen/argon mixtures](/preview/png/240933.png)
A study of detonation velocity and cellular structure for stoichiometric heptane/oxygen and for some stoichiometric heptane/oxygen/argon mixtures is carried out in a shock tube at low initial pressure. The critical conditions for the detonation onset and for the propagation of a self-sustained detonation wave are determined. A simplified form of the ZND model used in conjunction with a validated detailed kinetic model leads to the determination of the proportionality factor, A, between the detonation cell width, λ, and the induction distance, Δ, in the detonation wave. This A factor is of practical importance to estimate the detonation properties of n-heptane based mixtures including n-heptane/air. The prediction of detonation cell size λ for n-heptane based mixtures is discussed according to the recent semi-empirical detonation model of Gavrikov et al. The cell sizes predicted according to this detonation model are underestimated by a factor of about 8. The limitations of this model are underlined when applied to n-heptane based mixtures.
Journal: Proceedings of the Combustion Institute - Volume 30, Issue 2, January 2005, Pages 1925–1931