The state-of-the-art of the study on soot formation and exhaust smoke From gas turbine combustor has been reviewed with stress on the effects of fuel chemical properties. Based on a great amount of experimental data obtained on a variety of gas turbine combustors. the best correlation parameter representing the fuel effect has been determined as SP-0.92(100-Δx)-0.4

where SP is smoke point

V is the naphthalene content ( in percentage) of the fuel.