Development of in situ temperature measurement of high temperature gas by two-band infrared emission method

提出了一种利用红外热像仪测量热气中二氧化碳释放的能量来测量温度分布的方法。该测量方法是非侵入式的，可以得到二维温度分布。将该方法应用于超音速热气射流，能够捕捉到激波串结构及其温度分布。将该方法应用于快速压气机(RCM)中的预混气体，成功地捕捉到了自燃现象，包括冷火焰和热火焰的传播。

The temperature measurement method was developed to capture the temperature distribution with the emitted energy from carbon dioxide in hot gas by an infrared camera. The measurement is non-intrusive and two-dimensional temperature distribution can be obtained. Applying this method to supersonic hot gas jet, we were able to capture the shock train structure and its temperature profile. Applying the method to the premixed gas in the rapid compression machine (RCM), we succeeded in capturing the self-ignition phenomena, including the propagations of cool flame and hot flame respectively.