| Non-symmetric jets in crossflow have been studied with various jet geometries, jet orientations, jet characteristics and jet to crossflow velocity ratios. The asymmetric jets/crossflow interacting flow field contains many vortices, which vary significantly with the variation of the conditions of the jets and the crossflow. Under certain specific conditions, the shedding vortices appear periodically. Four different cross-section geometry jets were studied and compared with a circular jet with identical jet port cross-sectional area. Standard dye and laser induced fluorescent flow visualization techniques were used to identify the existence of various vortices in the flow field. A three components hot-film anemometer was used to aid in understanding of the highly three dimensional and complex flow field. Among many forms of secondary vortices produced, three major vortex systems were identified. These are main jet vortices, wake vortices and "spin-off" vortices. The shedding of "spin-off" vortices were found with jets orientation... |
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