High-Speed Visualization of Total Radiation and CARS Measurement of Vibrational/Rotational Temperatures behind Hypervelocity Shock Waves of 5 km/s

抄録

In this research we have tried to apply the CARS method to the measurement of vibrational and rotational temperatures with radiation behind the strong shock wave, and have also used high-speed camera to obtain 2D image of total radiation. The strong shock waves are generated by a free-piston, double-diaphragm shock tube with low-density test gas. As the results, CARS measurement for vibrational and rotational temperatures of hypersonic flow behind the strong shock waves has been satisfactorily established over 5km/s shock velocity. We also succeeded to acquire the ultra high-speed 2D image of total radiation of hypervelocity flow with strong shock waves.