ホログラフィー干渉を応用した液相内非定常温度分布の測定法

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  • A technique for measuring an unsteady temperature distribution in a liquid using holographic interferometry.
  • ホログラフィー カンショウ オ オウヨウシタ エキソウナイ ヒテイジョウ オン

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説明

The application of a holographic interferometry technique for measuring the steady and unsteady state temperature distributions in two liquids, water and n-propanol, were demonstrated. The deflection and temperature errors caused by refraction, which is the most important source of errors within a steep temperature field such as the thermal boundary layer were discussed and estimated. Estimated errors in the measured temperature of the liquid phase under spreading flame conditions for a 0.5 cm path length of n-propanol with 250°C/cm temperature gradient is within 2% below 36°C. The technique required:(1) transparency of the liquid, and (2) availability of the relation for the thermooptic coefficient of the liquid with temperature. If these requirements are satisfied, the temperature distribution of the liqid phase can be measured with a high spatial resolution of 20μm.

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