کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11009901 1815034 2019 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The characteristics of flame propagation in ammonia/oxygen mixtures
ترجمه فارسی عنوان
ویژگی های انتشار شعله در مخلوط آمونیاک / اکسیژن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
As a carbon free fuel and a hydrogen-energy carrier, ammonia is expected to be one of the promising energy carriers and to be widely used in industries. In this study, the parameters of ammonia/oxygen flame, such as laminar flame speed, the Markstein length, laminar flame thickness, and critical radius of flame instability onset have been investigated experimentally and numerically. A spherical ammonia /oxygen flame propagated in a constant volume chamber and a high speed digital Schilieren photograph system were used in the study. The influences of initial pressure and equivalence ratio on flame propagation have been investigated. It was found that the maximum laminar flame speed in ammonia/oxygen mixture is 1.09 m/s. The flame thickness decreases with the initial pressure increase. Generally, Markstein length increases with the increasing of equivalence ratio while it decreases with the increasing of initial pressure. The minimum critical radius in ammonia/oxygen is 1.8 cm. And the critical radius decreases with the increase of initial pressure. The mechanisms of flame instability in ammonia/oxygen mixture were analyzed, and the stabilize effect of flame stretch in ammonia/oxygen have been observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 363, 5 February 2019, Pages 187-196
نویسندگان
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