Temperature / soot volume fraction correlations in the fuel-rich region of buoyant turbulent diffusion flames
نویسندگان
چکیده
منابع مشابه
Imaging Measurements of Soot Temperature and Volume Fraction in Flames
New diagnostics are presented that use a digital camera to measure full-field soot temperatures and soot volume fractions in axisymmetric flames. The camera was a Nikon D700 with 12 megapixels and 14 bit depth in each color plane, and was modified by removing the infrared and anti-aliasing filters. The flame considered here was an 88 mm long ethylene/air coflowing laminar jet diffusion flame on...
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The structure of soot was investigated within the fuel-lean (overfire) region of overventilated buoyant turbulent diffusion flames burning in still air. The study was limited to the long residence time regime where characteristic flame residence times are roughly more than an order of magnitude longer than the laminar smoke point residence time and soot generation factors (the mass of soot emit...
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A three-dimensional (3-D) imaging system for studies of reactive and non-reactive flows is described. It can be used to reveal the topology of turbulent structures and to extract 3-D quantities, such as concentration gradients. Measurements are performed using a high repetition rate laser and detector system in combination with a scanning mirror. In this study, the system is used for laserinduc...
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Simultaneous planar measurements of laser-induced incandescence (LII) and Laser-Induced Fluorescence of OH radical were carried out in turbulent jet flames from a simple jet, precessing jet and bluff body burner firing natural gas. These flames span a wide range of global mixing rates and sooting characteristics, and are selected because measurements of total NOx emissions, radiant fraction and...
متن کاملModeling soot formation in turbulent kerosene/air jet diffusion flames
Soot volume fraction and number density in a turbulent diffusion flame burning kerosene/air were predicted using two approaches. The first used a conventional soot inception model based on the acetylene concentration and is referred to as the acetylene model. The second used a soot inception model based on the formation rate of three and two ring aromatics [1] and is referred to as the PAH ince...
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ژورنال
عنوان ژورنال: Combustion and Flame
سال: 1990
ISSN: 0010-2180
DOI: 10.1016/0010-2180(90)90061-u