Transparent heater for study of the boiling crisis near the vapor–liquid critical point

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• 作者：Yves Garrabos ; Carole Lecoutre ; Daniel Beysens ; Vadim Nikolayev ; Sebastien Barde ; Gabriel Pont ; Bernard Zappoli
• 关键词：Boiling crisis ; Critical heat flux ; Liquid– ; gas critical point
• 刊名：Acta Astronautica
• 出版年：2010
• 出版时间：March-April 2010
• 年：2010
• 卷：66
• 期：5-6
• 页码：760-768
• 全文大小：1004 K

文摘

New design for a pressurized optical cell dedicated to study the boiling crisis in non-homogeneous critical fluids in microgravity conditions is presented. The main characteristic concerns in situ integration of a heating device as a form of transparent resistive thin layer appropriate for light transmission observation of the liquid film boiling, by monitoring the thermal power produced by this heater. High-resolution and high-speed optical diagnostics complement in situ temperature measurements. Illustrations of the high-level performances are provided by the preliminary results obtained during the Earth's tests of the CNES-DECLIC facility, using two (vertical and horizontal) configurations of the heating device with respect to the gravity field acceleration.