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Small scale boiling experiments using two-dimensional imaging with high-speed camera and optical coherence tomography

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Published/Copyright: August 22, 2013
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Kerntechnik
From the journal Kerntechnik Volume 78 Issue 1

Abstract

To investigate boiling processes, a test facility has been constructed, which allows the use of optical techniques for the detection of individual vapor bubbles. Demineralized water was used as working fluid at ambient pressure whereat temperature, flow rate and heat flux density can be varied. The growth of individual vapor bubbles was recorded by high-speed camera and analyzed by digital image processing (DIP). Optical coherence tomography (OCT) enabled the visualization of steam bubbles in cross-sections perpendicular to the heated surface.

Kurzfassung

Zur Untersuchung von Siedevorgängen wurde eine Versuchsanlage konstruiert, welche den Einsatz von optischen Verfahren zur Erfassung einzelner Dampfblasen ermöglicht. Als Arbeitsfluid dient demineralisiertes Wasser bei Umgebungsdruck, wobei Temperatur, Strömungsgeschwindigkeit und Wärmestromdichte variiert werden können. Das Wachstum einzelner Dampfblasen wurde mit High-Speed Kamera erfasst und mittels digitaler Bildverarbeitung (DBV) ausgewertet. Die optische Kohärenztomographie (OCT) ermöglicht die Visualisierung von Dampfblasen in Schnittbildern senkrecht zur beheizten Oberfläche.

8 Dipl.-Ing. (FH) Clemens Schneider, E-mail:

References

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Received: 2012-10-11
Published Online: 2013-08-22
Published in Print: 2013-03-19

© 2013, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Summaries/Kurzfassungen
  4. Summaries
  5. Editorial
  6. Actual status of the research alliances “Condensation Induced Water Hammer” and “Boiling processes in Pressurized Water Reactors”
  7. Technical Contributions/Fachbeiträge
  8. High-resolution two-phase flow measurement techniques for the generation of experimental data for CFD code qualification
  9. Condensation induced water hammer (CIWH) – relevance in the nuclear industry and state of science and technology
  10. Experiments of condensation-induced water hammers at the UniBw Munich
  11. Development of a 1 D hybrid HTC model using CFD simulations for the analysis of direct contact condensation as the driving force for water hammers
  12. 1D Models for Condensation Induced Water Hammer in Pipelines
  13. Modelling, simulation and experiments on boiling processes in pressurized water reactors
  14. CFD analysis of a void distribution benchmark in a rod bundle
  15. CFD-modelling of subcooled boiling
  16. On the pair correlation function in a bubble swarm
  17. Large Eddy Simulation of the shear flow instability in a rod-bundle assembly
  18. Small scale boiling experiments using two-dimensional imaging with high-speed camera and optical coherence tomography
  19. Validation of mechanistic CHF models using optical measuring techniques
  20. Experimental investigations of single and two-phase flow in a heated rod bundle
  21. CFD-Modeling of turbulent flows in rod bundle and comparison to experiments
  22. About the change in boiling behaviour of water with coolant additives in PWR
  23. Simulation of external reactor vessel cooling in a lumped-parameter code
https://doi.org/10.3139/124.110314

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Summaries/Kurzfassungen
  4. Summaries
  5. Editorial
  6. Actual status of the research alliances “Condensation Induced Water Hammer” and “Boiling processes in Pressurized Water Reactors”
  7. Technical Contributions/Fachbeiträge
  8. High-resolution two-phase flow measurement techniques for the generation of experimental data for CFD code qualification
  9. Condensation induced water hammer (CIWH) – relevance in the nuclear industry and state of science and technology
  10. Experiments of condensation-induced water hammers at the UniBw Munich
  11. Development of a 1 D hybrid HTC model using CFD simulations for the analysis of direct contact condensation as the driving force for water hammers
  12. 1D Models for Condensation Induced Water Hammer in Pipelines
  13. Modelling, simulation and experiments on boiling processes in pressurized water reactors
  14. CFD analysis of a void distribution benchmark in a rod bundle
  15. CFD-modelling of subcooled boiling
  16. On the pair correlation function in a bubble swarm
  17. Large Eddy Simulation of the shear flow instability in a rod-bundle assembly
  18. Small scale boiling experiments using two-dimensional imaging with high-speed camera and optical coherence tomography
  19. Validation of mechanistic CHF models using optical measuring techniques
  20. Experimental investigations of single and two-phase flow in a heated rod bundle
  21. CFD-Modeling of turbulent flows in rod bundle and comparison to experiments
  22. About the change in boiling behaviour of water with coolant additives in PWR
  23. Simulation of external reactor vessel cooling in a lumped-parameter code
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