Interaction of Two Parallel Plane Jets of Different Velocities

Article type: Research Article

Authors: Fujisawa, N. | Nakamura, K. | Srinivas, K.

Affiliations: Department of Mechanical and Production Engineering, Niigata University, 8050 Ikarashi 2, Niigata, 950-2181, Japan. | School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, NSW 2006, Australia

Abstract: The interaction of two parallel plane jets of different velocities is studied by flow visualization and PIV measurement to examine the influence of velocity ratio on the development of jets in the initial region. It is found that the parallel plane jets develop toward the high velocity side and the jet width is reduced with a decrease in the jet velocity ratio. Corresponding to the variation of mean velocity field to the velocity ratio, the magnitudes of turbulence intensities, Reynolds stress and static pressure are weakened in the merging region of the jets and their peak locations of the properties are shifted to the high velocity side. These results indicate that the interaction of two parallel jets is weakened with a decrease in the velocity ratio of the jets.

Keywords: Parallel jets, Flow measurement, Turbulent flow, PIV, Flow visualization

Journal: Journal of Visualization, vol. 7, no. 2, pp. 135-142, 2004