Volume 40 Issue 1
Jan.  2020
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SHI Jianping, LIU Junguo, DAI Guoliang. Flame Temperature Measurement by a Straight-type Schlieren Method[J]. Journal of Space Science, 2020, 40(1): 79-85. doi: 10.11728/cjss2020.01.079
Citation: SHI Jianping, LIU Junguo, DAI Guoliang. Flame Temperature Measurement by a Straight-type Schlieren Method[J]. Journal of Space Science, 2020, 40(1): 79-85. doi: 10.11728/cjss2020.01.079

Flame Temperature Measurement by a Straight-type Schlieren Method

doi: 10.11728/cjss2020.01.079
  • Received Date: 2019-11-25
  • Publish Date: 2020-01-15
  • It is critical to determinate the temperature distribution of flame for studying its structure. In this paper, the schlieren method of the straight-type, instead of the Z-type in common used, is employed for the sake of compatibility with other optical methods in future space experiments with different purposes. Moreover, the design of straight-type schlieren system is optimized by investigating the effects of light source, lens, and knife edge on the system sensitivity. Then, the schlieren images of a candle flame are recorded using the optimized schlieren system after calibration. The temperature distribution calculated from these images coincides with those measurement through thermocouples, thus the flame temperature can be obtained accurately from the straight-type schlieren system.


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