1705 二段膜衝撃波管における反射衝撃波後方の温度分布(OS17-1 超音速流と衝撃波,オーガナイズドセッション)

概要

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A shock-compression stoichiometric methane ignition in the lower temperature region has been originated not at the end of the shock tube but a little to the inside of the tube. This curious phenomenon has been investigated experimentally and numerically. The distributions of temperature and density behind a reflected shock wave were measured by infrared 3.39-μm He-Ne laser-absorption technique in a double diaphragm shock tube. Computations were carried out by solving the two-dimensional compressible Navier-Stokes equations by using an explicit TVD-MacCormack finite difference scheme. It was found from the result that a double diaphragm technique provides a more uniform temperature distribution behind the reflected shock wave. However, the theoretically calculated densities behind the reflected shock from incident shock velocities are higher than measured density.
2010-10-29