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Heat Transfer Research
インパクトファクター: 0.404 5年インパクトファクター: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016016764
pages 1169-1186

EXERGY TRANSFER RESEARCH ON THE SANDIA FLAME D − A TURBULENT PILOTED METHANE − AIR JET FLAME

Yaning Zhang
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China; Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, 55108, USA
Xiangyu Yu
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China
Bingxi Li
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150000, Heilongjiang, China

要約

The Sandia Flame D is a typical and popular turbulent piloted nonpremixed methane-air jet flame. It is extensively studied through both experiments and simulations, however, no exergy analysis of the Sandia Flame D has been reported. This study reports the exergy transfer of the Sandia Flame D for the first time by demonstrating the local kinetic, chemical, thermal, and total exergy of gas in the computational domain. The results obtained from this study show that the local kinetic, chemical, thermal, and total exergy values vary in the ranges of 0.0003–1.974, 1.734–8032.531, 0.003–1568.504, and 1.791–8034.545 kJ/kg, respectively. Both the local kinetic and chemical exergy show the highest values near the gas inlet, and they diffuse and diminish in both the axial and radial directions whereas the local thermal exergy has higher values around the flame marginal and lower values beyond. When the combustion of methane goes on, the chemical exergy transfers to the thermal exergy and it consequently reduces monotonically, whereas the thermal exergy increases first and then diminishes, these collectively making the total exergy reduce monotonically on the whole. The results obtained from this study illustrate well what the local exergy characteristics of the Sandia Flame D are as well as how the exergy transfers and loses.


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