First characterization of two phase phenomena occurring during a rapid energy discharge in saturated carbon dioxide
| Autor: | Romuald Rullière, Adrien Abbate, Jean Muller, Pierre Ruyer, Marc Clausse |
|---|---|
| Přispěvatelé: | PSN-RES/SEMIA/LSMA, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centre d'Energétique et de Thermique de Lyon (CETHIL), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fluid Flow and Transfer Processes
Work (thermodynamics) Materials science Explosive material Mechanical Engineering General Chemical Engineering Joule effect Aerospace Engineering 02 engineering and technology Mechanics 7. Clean energy 01 natural sciences Pressure sensor 010305 fluids & plasmas Coolant Physics::Fluid Dynamics [SPI]Engineering Sciences [physics] 020401 chemical engineering Nuclear Energy and Engineering Volume (thermodynamics) 0103 physical sciences Working fluid Transient (oscillation) 0204 chemical engineering |
| Zdroj: | Experimental Thermal and Fluid Science Experimental Thermal and Fluid Science, Elsevier, 2021, 129, pp.110471. ⟨10.1016/j.expthermflusci.2021.110471⟩ |
| ISSN: | 0894-1777 |
| DOI: | 10.1016/j.expthermflusci.2021.110471⟩ |
| Popis: | The aim of this paper is to characterize two-phase phenomena occurring for a rapid energy discharge in the fluid leading to explosive vapour expansion. This study was motivated by the lack of macro-scale experiments characterizing those transient phenomena at high reduced pressure. For that purpose, a complete test section was designed based on the Joule effect to deliver the energy discharge. CO 2 was chosen as working fluid, allowing to work at saturation and under saturation conditions. Equipped with pressure sensors and a high-speed camera, the complete process is recorded during few seconds. The thermal shock in the carbon dioxide creates transient pressure peaks and sudden vapour production. The first observed pressure wave is well described as acoustics. This first wave is followed by a quick (60 ms) generation of vapour.The maximum volume of vapour produced is extracted from pressure fluctuations and matches the theoretical value. Following their creation, the bubbles flow upward in the test section as bubbly flow. Visual observation allows the characterization of the shape and the velocity of pertinent bubbles as part of a wobbling flow. This project, motivated by the so-called Fuel Coolant Interaction (FCI) nuclear safety related problematic, brings consistent data allowing to better characterize the small scale processes for such transient vaporization phenomena. This paper focuses on a single test performed under saturated conditions. |
| Databáze: | OpenAIRE |
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