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Pool Spreading and Vaporization of Liquid Hydrogen

Pool Spreading and Vaporization of Liquid Hydrogen. by  Karl VERFONDERN 1) and Bernd DIENHART 2) 1) Research Center Juelich, Germany 2) Cologne, Germany. Cryogenic Pool Phenomena. 150 l of LN 2 spilled on water. Computer Model LAUV.

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Pool Spreading and Vaporization of Liquid Hydrogen

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  1. Pool Spreading and Vaporizationof Liquid Hydrogen by Karl VERFONDERN 1) and Bernd DIENHART 2) 1) Research Center Juelich, Germany 2) Cologne, Germany K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  2. Cryogenic Pool Phenomena 150 l of LN2 spilled on water K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  3. Computer Model LAUV • Simulation of radial spreading of a cryogenic liquid on the basis of the shallow-layer differential equations; • Instantaneous and continuous release on solid, humid, or liquid ground; • Heat conduction equation applied, if ground is solid; • Ice formation, if ground is water; • Atmospheric convection and insolation neglected; • Validation against LN2 and LH2 spill tests and LNG spill test data from literature K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  4. Cryogenic Pool Behavior (1) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  5. Cryogenic Pool Behavior (2) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  6. Cryogenic Pool Behavior (3) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  7. Cryogenic Pool Behavior (4) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  8. LN2 Spill Tests on Water (KIWI) at FZJ K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  9. NASA LH2 Spill Tests (1980) 4.6 m radius spill pond Courtesy Jose Chirivella, Ergo-Tech Systems Inc. K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  10. LAUV Postcalculation of NASA Test #6 K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  11. WE-NET LH2 Spill Tests (1993 + 2000) Courtesy Keiko Chitose, Mitsubishi Heavy Industries K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  12. BAM LH2 Spill Tests in Cottbus (1994) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  13. LAUV Postcalculation – LH2 Spill on Water K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  14. LAUV Postcalculation – LH2 Spill on Al Plate K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  15. Conclusions • Phenomena of cryogen pool spreading and vaporization are principally understood. • Modeling efforts have led to simplified, but appropriate simulation of phenomena. • Experimental data basis for LH2 is still very poor and needs further extension. K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  16. Thank Youfor Your Attention Email: k.verfondern@fz-juelich.de Phone: +49-2461-613438 K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  17. Backup Slides K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  18. Experiments on Pool Spreading K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  19. Model Developments on Pool Spreading K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  20. Nukiyama Curve for LH2 K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

  21. LH2 Regression Rate Zabetakis (1960) K. Verfondern, B. Dienhart Int. Conference on Hydrogen Safety, ICHS, Sep 8 - 10, 2005, Pisa, Italy

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