An empirical model for natural convection heat transfer for film-boiling condition has been developed for volumetrically heated particulate debris beds when flooded with water at the top of the bed. The model has been derived from the quenching data generated in the POMECO facility located at KTH, Stockholm. A dryout model is also developed for countercurrent flooding limiting condition when the heat generating saturated debris bed is flooded with water from the top. The model is in good agreement with the experimental data over a wide range of particle size and porosity as compared to the existing models. The implication of the models with respect to quenching of porous debris bed formed during postulated severe accident condition is discussed.
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Modeling the Natural Convection Heat Transfer and Dryout Heat Flux in a Porous Debris Bed
R. Sinha,
R. Sinha
Graduate Student
Department of Mechanical Engineering,
S.P. College of Engineering
, Mumbai 400058, India
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A. K. Nayak,
A. K. Nayak
Reactor Engineering Division,
e-mail: arunths@barc.gov.in
Bhabha Atomic Research Centre
, Trombay, Mumbai 400085, India
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B. R. Sehgal
B. R. Sehgal
Nuclear Power Safety Division,
Royal Institute of Technology
, Stockholm SE-10044, Sweden
Search for other works by this author on:
R. Sinha
Graduate Student
Department of Mechanical Engineering,
S.P. College of Engineering
, Mumbai 400058, India
A. K. Nayak
Reactor Engineering Division,
Bhabha Atomic Research Centre
, Trombay, Mumbai 400085, Indiae-mail: arunths@barc.gov.in
B. R. Sehgal
Nuclear Power Safety Division,
Royal Institute of Technology
, Stockholm SE-10044, SwedenJ. Heat Transfer. Oct 2008, 130(10): 104503 (5 pages)
Published Online: August 7, 2008
Article history
Received:
April 9, 2007
Revised:
March 28, 2008
Published:
August 7, 2008
Citation
Sinha, R., Nayak, A. K., and Sehgal, B. R. (August 7, 2008). "Modeling the Natural Convection Heat Transfer and Dryout Heat Flux in a Porous Debris Bed." ASME. J. Heat Transfer. October 2008; 130(10): 104503. https://doi.org/10.1115/1.2952756
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