Abstract
This paper examines the flame development patterns after a propane-air mixture is ignited at double spark locations. The particular characteristics associated with the growth of double flames originate from the compression flow generated by the opposing flame. A complete simulation of this process is extremely complex. Therefore, for simulating three-dimensional flame development, a simplified numerical method for the analysis of this flow has been added to the space difference method. The effects on the flame development of the ignition locations and of the spark time delay between the ignition points were examined. The calculated results are in good agreement with measurements except when a strong secondary flow is generated.
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