激波管内氢-氧混合气体爆轰温度的测量

 以光纤传输光能，用多通道光学高温计，在垂直和平行于爆轰波传播方向上，测量了激波管中氢氧（或含氮）混合气体的爆轰温度。在20~53 kPa压力范围内，进行了六种初始压力氢氧混合气体的爆轰，分别测出横向温度和纵向温度；这两种温度在实验测量的误差范围内是一致的，并与正常爆轰的理论值符合得相当好。

DETONATION TEMPERATURE FOR HYDROGEN-OXYGEN MIXTURES USING MULTIWAVELENGTH PYROMETER

A multiwavelengih method that can be used to measure the detonation temperature-for hydrogen-oxygen mixture in shock tube was described in this paper, with the entire field of view of the receiving fibres either filled by the gases or not. To calculate transverse temperature and longitudinal temperature, the continuum radiation at four wavelengths (406.4,540,636.835nmi was measured by two ways, one was that the receiving fibres were vertical to the direction of detonation wave, the other was that the receiving fibres were parallel to the direction of detonatipn wave. If Planck equation is assumed to be suitable for product gases and the emissivily of the gases is assumed to be gray for the above four wavelengths, the transverse and longitudinal temperatures for six hydrogen-oxygen mixtures were calculated in the initial pressure range 0.020-0.053 MPa and the fitting errors were about 10%.The transverse temperature coincides with the longitudinal temperature in the experimental errors and the temperatures also coincide with the theorectical C-J temperature very well.