Akademik Veri Yönetim Sistemi
2001 ASME Fluids Engineering Division Summer Meeting, New Orleans, LA, Amerika Birleşik Devletleri, 29 Mayıs - 01 Haziran 2001, cilt.1, ss.935-942
Simultaneous PIV/PLIF measurements of velocity and concentration were made in a circular jet issuing normal to a fully developed crossflow in a water channel of square cross section. Data in the plane of symmetry are presented for two turbulent flow cases (at channel Reynolds number Re c=33150 and jet-to-crossflow velocity ratios of R=3.3 and 1.3, respectively) and one laminar flow case (Re c=675 and R=3.3). Results are discussed in terms of topology of streamlines, distributions of mean velocity and concentration, Reynolds stresses and Reynolds fluxes, eddy viscosity and eddy diffusivity, and turbulent Schmidt number. Data are presented both in Cartesian and jet-trajectory-based coordinate systems. Extreme values of speed and Reynolds stress are found above the jet trajectory whereas maximal values of concentration and Reynolds flux are located below the jet trajectory. The turbulent Schmidt number varies significantly between 0 and 10 near the jet exit and tends to decrease with increasing distance along the jet trajectory. Reynolds flux lines reveal a line of divergence near the jet trajectory and a line of convergence below the jet trajectory.