کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7720934 1497504 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air
ترجمه فارسی عنوان
تأثیر غلظت هیدروژن بر شعله های اتمسفر هیدروژن-متان-هوا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
The unstretched laminar burning velocities and Markstein numbers of spherically propagating hydrogen-methane-air flames were studied at a mixture pressure of 0.10 MPa and a mixture temperature of 350 K. The fraction of hydrogen in the binary fuel was varied from 0 to 1.0 at equivalence ratios of 0.8, 1.0 and 1.2. The unstretched laminar burning velocity increased non-linearly with hydrogen fraction for all the equivalence ratios. The Markstein number varied non-monotonically at equivalence ratios of 0.8 and 1.0 and increased monotonically at equivalence ratio of 1.2 with increasing hydrogen fraction. Analytical evaluation of the Markstein number suggested that the trends could be due to the effective Lewis number, which varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0 and increased monotonically at 1.2. The propensity of flame instability varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 5, 4 February 2014, Pages 2409-2417
نویسندگان
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