Abstract: This paper describes the fuel distribution of the primary zone in a rectangular testing combustor that has been fitted with three counter double\|swirler airblast atomizer. The investigation was made by the use of gas analysis technique after the measurement of the flow field. The results of fuel distribution experiment indicated that the local fuel\|air ratio is very high and fuel mass\|flow is low in the recirculation zone and the region between the two atomizers, but the local fuel\|air ratio is close to the proper value and the fuel mass\|flow is high in the main stream. These experimental results are important in the research of that type of engine.

Key words: combustor　airblastatomizer, swirl flow, fuel distribution