Temperature and velocity measurements of imploding detonation
Using stoichiometric hydrogen-oxygen and propane-oxygen mixtures, the detonation was made spherically converge toward the center of the detonation chamber, whose cross section was made conical. The scratch was observed at the center. The depth and the width of the deepest point of the scratch were twenty and several μm and 0.1 mm, respectively.
Also the converging profiles of the stoichiometric hydrogen-oxygen mixture were followed by measuring pressure profiles at various radii. The relations between the pressure P/PCJ and the radius (r/Ro)m agreed well with those of propane-oxygen mixture. The power dependencies m were m=1.1±0.2 for the incident detonation, m=0.9±0.1 for the first reflected shock wave, m=1.2±0.1 for the second reflected shock wave.
The argon temperatures at imploding center were 7000 ± 4000 K between 1 and 3 /xs and the electron temperatures were 20000 ± 10000 K, which were measured by estimation of Bremsstrahlung.
KeywordsShock Wave Detonation Wave Initial Pressure Plasma Physic Report Oxygen Mixture
Unable to display preview. Download preview PDF.
- 5.T. Tsuboi, K. Ishii, H. Takada: ‘Pressure Measurement at the Center of an Imploding Detonation’. In: Proceedings of the 21st International Symposium on Shock Waves (Panther Publishing & Printing, Fyshwick 1997), pp. 367–372Google Scholar
- 7.K. Terao: ‘Nucear Fusion Reactor Ignited by Imploding Detonation Waves’. In: 35th Intersociety Energy Conversion Engineering Conference, AIAA 2000-2965, Las Vegas, July 2000, pp. 1–10Google Scholar
- 8.G. Herzberg: Molecular Spectra and Molecular Structure, I. Spectra of Diatomic Molecules (Van Nostrand Reinhold Co., New York 1950) Chap. 8 p.451Google Scholar
- 9.M.W. Chase Jr, CA. Davies, J.R. Downey Jr, D.J. Frurip, RA. McDonald, A.N. Syverud: JANAF Thermochemical Tables (3rd ed) (American Institute of Physics, Inc., New York 1985) J. Phys. Chem. Ref. Data, Suppl. 1, 14Google Scholar