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The flame behavior and coherent structure of the combusting propane gas jet in a cross airstream at low jet-to-wind momentum flux ratios are studied experimentally. A one-component constant-temperature hot-wire anemometer is employed to extract frequency information from the traveling coherent structures evolving from the upwind side of the jet body. The reduced traveling frequency of the coherent structure in the near burner region is correlated to the jet-to-wind momentum flux ratio. The reduced eddy traveling frequency approaches to a constant of about 0.35 at high jet-to-wind momentum flux ratios. The trajectories of the traveling coherent structures depicted by the bisector of the eddy traveling avenue (the narrow band where the coherent structures sweep over) are correlated by nondimensional coordinates
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Huang et al. (1994) studied this question.
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