Radiation from Luminous Flame at High Pressures : Spray Combustion of Liquid Fuel

概要

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The pressure dependences of carbon particle cloud radiation and of nunluminous gas radiation are examined individually in order to predictradiation from luminous flame of liquid fuel at high pressures. For carbon particle cloud radiation, the equation of carbon formation is determined in terms of pressure and excess air factor with reference to the experiments on the soot formation from vaporized fuel at low excess air factor and on the combustion of a single droplet of fuel in a large chamber. For nonluminous gas radiation, the expressions obtained by Edwards are adopted. A method is developed to calculate the luminous flame radiation at high pressures using the above expressions and the experimental results at an atmospheric pressure. The calculated results agree well with the measured values. The maximum, average and endzone absorption coefficients in the luminous flame can be easily calculated.