Laser Doppler Anemometer (LDA) is used for studying the effects of various parameters of impingement jets in cylindrical chamber (IJCC), such as d/D, H/d, γ (momentum ratio) and Re, on flow pattern, as well as those ...Laser Doppler Anemometer (LDA) is used for studying the effects of various parameters of impingement jets in cylindrical chamber (IJCC), such as d/D, H/d, γ (momentum ratio) and Re, on flow pattern, as well as those on turbulence intensity. Experimental results show that turbulence intensity is enhanced with decrease of II/d and/ or increase of d/D; and turbulence intensity approaches to a maximum as T=1. Re imposes a quite complicated in- fluence. In case the jet velocity remains unchanged, turbulence intensities might keep almost constant when Re's vary even a magnitude of order.展开更多
文摘Laser Doppler Anemometer (LDA) is used for studying the effects of various parameters of impingement jets in cylindrical chamber (IJCC), such as d/D, H/d, γ (momentum ratio) and Re, on flow pattern, as well as those on turbulence intensity. Experimental results show that turbulence intensity is enhanced with decrease of II/d and/ or increase of d/D; and turbulence intensity approaches to a maximum as T=1. Re imposes a quite complicated in- fluence. In case the jet velocity remains unchanged, turbulence intensities might keep almost constant when Re's vary even a magnitude of order.
