Numerical Simulation of Methane-Air Nozzle Burners for Aluminum Remelt Furnaces

A. Mukhopadhyay, I. Puri, Serguei Zelepouga, D. Rue
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引用次数: 2

Abstract

A turbulent nozzle-mix burner, suitable for industrial use in aluminum remelt furnaces has been numerically simulated using FLUENT software. The burner has been modeled as a vertical axisymmetric arrangement of fuel duct at the center, surrounded by a coaxial annular duct of air. The ducts discharge into a confined environment, formed by a chimney, placed coaxially with the ducts. The effects of fuel velocity and air coflow velocity ratio on the flame height have been investigated. The flame height is found to increase with increase in fuel velocity for a given air-fuel velocity ratio and with decrease in air velocity for a given fuel velocity. The different flame height definitions found in literature give nearly identical flame heights for all the cases studied.
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铝熔炼炉甲烷-空气喷嘴燃烧器的数值模拟
采用FLUENT软件对一种适用于工业铝熔炼炉的湍流喷嘴混合燃烧器进行了数值模拟。燃烧器被模拟成一个垂直轴对称布置的燃料管道在中心,被一个同轴的环形空气管道包围。管道排放到一个封闭的环境中,由烟囱形成,与管道同轴放置。研究了燃料速度和空气共流速度比对火焰高度的影响。对于给定的空气-燃料速度比,火焰高度随着燃料速度的增加而增加,对于给定的燃料速度,火焰高度随着空气速度的减少而增加。在文献中发现的不同火焰高度定义给出了几乎相同的火焰高度的所有研究案例。
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