Planar Rayleigh Scattering Results in Helium/air Mixing
نویسندگان
چکیده
Planar Rayleigh scattering measurements using an ArF-excimerlaser have been performed to investigate helium mixing into air atsupersonic speeds. The capability of the Rayleigh scattering technique for flowvisualization of a turbulent environment is demonstrated in a large-scale, Mach 6facility. The detection limit obtained with the present setup indicates thatplanar, quantitative measurements of density can be made over a large cross sectionalarea (5 cm by 10 cm) of the flow field in the absence of clusters.
منابع مشابه
Planar Rayleigh Scattering Results in Helium / Air Mixing Experiments in a Mach
Planar Rayleigh scattering measurements using an ArF-excimer laser have been performed to investigate helium mixing into air at supersonic speeds. The capability of the Rayleigh scattering technique for flow visualization of a turbulent environment is demonstrated in a large-scale, Mach 6 facility. The detection limit obtained with the present setup indicates that planar, quantitative measureme...
متن کاملPLANAR RAYLEIGH SCATTERING RESULTS IN HELIUM/AIR MIXING EXPERIMENTS IN A MACH 6 WIND TUNNEL by
Planar Rayleigh scattering measurements using an ArF-excimerlaser have been performed to investigate helium mixing into air atsupersonic speeds. The capability of the Rayleigh scattering technique for flowvisualization of a turbulent environment is demonstrated in a large-scale, Mach 6facility. The detection limit obtained with the present setup indicates thatplanar, quantitative measurements o...
متن کاملPlanar Rayleigh scattering results in helium-air mixing experiments in a Mach-6 wind tunnel.
Planar Rayleigh scattering measurements with an argon-fluoride excimer laser are performed to investigate helium mixing into air at supersonic speeds. The capability of the Rayleigh scattering technique for flow visualization of a turbulent environment is demonstrated in a large-scale, Mach-6 facility. The detection limit obtained with the present setup indicates that planar, quantitative measu...
متن کاملShock-induced mixing of nonhomogeneous density turbulent jets
An experimental study of the mixing enhancement and changes in flow structure arising from the interaction of weak normal shock waves with turbulent jets was conducted. The experimental configuration was an axisymmetric jet processed by weak normal shock waves propagating in a shock tube along the jet axis. Experiments involved three different jet gases: helium, air, and carbon dioxide, each in...
متن کاملThe Scattering of Light from Liquid Helium
A review is given of the scattering of light by superfluid helium. A brief discussion is given first of the theory of Brillouin and Rayleigh scattering from an ordinary simple pure liquid. It is shown how this discussion must be modified in the case of the superfluid phase of purc 4He, and experimental observations of Brillouin scattering from first sound in liquid helium are described. The dis...
متن کامل