10 February 2009 The influence of bubble evolution on the early characteristics of the boiling liquid expanding vapor explosion
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Proceedings Volume 7126, 28th International Congress on High-Speed Imaging and Photonics; 71260O (2009) https://doi.org/10.1117/12.822043
Event: 28th International Congress on High-Speed Imaging and Photonics, 2008, Canberra, Australia
Abstract
In the study of boiling liquid expanding vapor explosion (BLEVE), the critical point to interpret the mechanism of the disaster is to analyze the phase transition of the superheated liquid in the container and the motions of the medium during the first several or several tens of milliseconds after the explosion from the microscopic angle of view. In the study recorded in this paper, a BLEVE simulative device was made. Using high-speed camera, the instant explosive boiling in the liquor phase space and the formation and development of the high speed two-phase flow were observed at the moment of the container broken in explosion, the growing and moving speed of the bubble in the liquor phase space were measured, and the influence of the energy released by blasted bubble nucleate in the early stages on the boiling characteristics of the superheated liquid and the overpressure disciplines in the container were analyzed. The study shows that in a BLEVE process, the boiling of superheated liquid does not present in the form of volume boiling, but presents as a progressive process with several steps that starts from the surface and develops over time.
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Sining Chen, Sining Chen, Xuechao He, Xuechao He, Jinhua Sun, Jinhua Sun, } "The influence of bubble evolution on the early characteristics of the boiling liquid expanding vapor explosion", Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 71260O (10 February 2009); doi: 10.1117/12.822043; https://doi.org/10.1117/12.822043
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