A COMPUTATIONAL MODEL FOR THERMAL RADIATION FROM THE ZONE OF MELT-WATER INTERACTION

2010 ◽  
Vol 2 (6) ◽  
pp. 535-547 ◽  
Author(s):  
Leonid A. Dombrovsky ◽  
M. V. Davydov
Keyword(s):  
Thermal Radiation ◽  
Computational Model ◽  
Water Interaction ◽  
Melt Water

Ex-vessel Melt/Water Interaction

2020 ◽  
pp. 523-537
Author(s):  
H. E. Unger ◽  
M. Bürger ◽  
E. F. Hicken
Keyword(s):  
Water Interaction ◽  
Melt Water

Martian rampart crater ejecta: Experiments and analysis of melt-water interaction

Icarus ◽  
1983 ◽  
Vol 56 (1) ◽  
pp. 15-37 ◽  
Author(s):  
K.H. Wohletz ◽  
M.F. Sheridan
Keyword(s):  
Water Interaction ◽  
Melt Water

scholarly journals Validation of the THIRMAL-1 melt-water interaction code

1995 ◽  
Author(s):  
C C Chu ◽  
J J Sienicki ◽  
B W Spencer
Keyword(s):  
Water Interaction ◽  
Melt Water

Effect of melt water interaction configuration on the process of steam explosion

2016 ◽  
Vol 54 (1) ◽  
pp. 47-57 ◽  
Author(s):  
JinHo Song ◽  
YoungSu Na ◽  
SeongWan Hong ◽  
SeongHo Hong
Keyword(s):  
Steam Explosion ◽  
Water Interaction ◽  
Melt Water

Thermal Radiation From the Zone of Melt-Water Interaction: Computational Model and Some Numerical Results

2010 ◽  
Author(s):  
Leonid A. Dombrovsky ◽  
Mikhail V. Davydov
Keyword(s):  
Thermal Radiation ◽  
Computational Model ◽  
Numerical Procedure ◽  
Numerical Data ◽  
Large Cell ◽  
Severe Accident ◽  
Small Scale ◽  
Physical Parameters ◽  
Transfer Model ◽  
Visible Radiation

This paper is concerned with numerical modeling of thermal radiation from the zone of interaction of a melt jet with a water pool. This particular problem is a part of the analysis of complex interaction of the core melt with water in the case of a hypothetical severe accident in light-water nuclear reactors. The energetic contribution of thermal radiation has been studied in some details in recent papers by the authors. In the present paper, we focus on a solution related with possible optical diagnostics of the physical parameters of the process. This diagnostics can be based on comparison of the measured and calculated thermal radiation in the small-scale laboratory experiments. The sensitivity of the numerical data to some important parameters of the computational model is expected to be important to validate and improve the multiphase flow model. The radiation transfer model employed is based on the transport approximation. The numerical procedure includes ray-tracing calculations in the range of water semi-transparency with a source function determined using the large-cell radiation model. It is shown that the visible radiation of the interaction zone contains important information on the process parameters and these parameters might be identified on the basis of the developed computational procedure for the direct problem.

CFD Simulation of the Sidewall Fired Tubular Reforming Furnace

2002 ◽  
Author(s):  
Per Nielsen ◽  
Lars J. Christiansen
Keyword(s):  
Experimental Data ◽  
Boundary Condition ◽  
Temperature Field ◽  
Thermal Radiation ◽  
Computational Model ◽  
Temperature Profile ◽  
Flue Gas ◽  
Process Model ◽  
High Efficiency ◽  
Cfd Simulation

This paper describes simulations of Haldor Topsoe designed reforming furnaces. These furnaces are fired by a matrix of burners on the two sidewalls. The burners provide the heat needed for the reactions taking place inside vertical catalyst-filled tubes. The main objective is to get a better understanding of the flow and temperature field on the flue gas side, thus making it possible to enhance the design of high efficiency reformers. The simulations on the furnace side include models for combustion and thermal radiation. A separate CFD simulation is performed on the process side. An appropriate method has been introduced for the coupling of the furnace model with the process model thus eliminating the need for using an assumed temperature profile as boundary condition on the outer tube walls. The computational model has been verified by performing simulations on a pilot reformer. The numerical results agree well with the experimental data.

Attentive Tracking in the Perception of Animacy: A Computational Model of "Chasing" vs. "Stalking"

2013 ◽  
Author(s):  
Tao Gao ◽  
Chris L. Baker ◽  
Joshua B. Tenenbaum
Keyword(s):  
Computational Model
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