Experiment on fuel injection in high-enthalpy flow

Hideyuki Tanno; Tomoyuki Komuro; Kazuo Sato; Katsuhiro Itoh; Shuichi Ueda

doi:10.1117/12.424254

17 April 2001 Experiment on fuel injection in high-enthalpy flow

Hideyuki Tanno, Tomoyuki Komuro, Kazuo Sato, Katsuhiro Itoh, Shuichi Ueda

Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424254
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

An experiment of inert gas injection into a high enthalpy hypersonic air flow is described. Gaseous helium at room temperature was injected transversely through four (phi) 1.5 mm circular sonic injectors at a spacing of 20 mm, which was located 28 mm downstream from a backward-facing step of 4 mm height. The experiment was carried out in the high enthalpy shock tunnel HIEST under the free stream test condition at Mach number of 6.5 and at the velocity of 4 km/s. The purpose of the experiment was to examine transient behavior of the helium jet mixing with the test air flow. Sequential Schlieren flow visualization with high-speed CCD camera of 1 (mu) sec exposure time have been used. Pitot pressure profile in the helium jet was measured at three stream-wise location. The measurements showed that the helium jet reached to the steady state in less than 2 msec, which was within HIEST test duration.

Citation Download Citation

Hideyuki Tanno, Tomoyuki Komuro, Kazuo Sato, Katsuhiro Itoh, and Shuichi Ueda "Experiment on fuel injection in high-enthalpy flow", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424254

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