scholarly journals PADLOC: a one-dimensional computer program for calculating coolant and plateout fission-product concentrations. Part 2

1981 ◽  
Author(s):  
W.W. Hudritsch
Keyword(s):  
Computer Program ◽  
Fission Product ◽  
One Dimensional

Implementation of A Gibbs Energy Minimizer In A Fission-Product Release Computer Program

2013 ◽  
Vol 2 (1) ◽  
pp. 39-48
Author(s):  
D.H. Barber
Keyword(s):  
Computer Program ◽  
Fission Product ◽  
Nuclear Physics ◽  
Noble Gas ◽  
Safety Margin ◽  
Fission Products ◽  
Nuclear Accidents ◽  
The Public ◽  
Product Release ◽  
Core Cooling

SOURCE 2.0 is the Canadian computer program for calculating fractional release of fission products from the UO2 fuel matrix. In nuclear accidents, fission-product release from fuel is one of the physical steps required before radiation dose from fission products can affect the public. Fission-product release calculations are a step in the analysis path to calculating dose consequences to the public from postulated nuclear accidents. SOURCE 2.0 contains a 1997 model of fission-product vaporization by B.J. Corse et al. based on lookup tables generated with the FACT computer program. That model was tractable on computers of that day. However, the understanding of fuel thermochemistry has advanced since that time. Additionally, computational resources have significantly improved since the time of the development of the Corse model and now allow incorporation of the more-rigorous thermodynamic treatment. Combining the newer Royal Military College of Canada (RMC) thermodynamic model of irradiated uranium dioxide fuel, a new model for fission-product vaporization from the fuel surface, a commercial user-callable thermodynamics subroutine library (ChemApp), an updated nuclide list, and updated nuclear physics data, a prototype computer program based on SOURCE IST 2.0P11 has been created that performs thermodynamic calculations internally. The resulting prototype code (with updated and revised data) provides estimates of 140La releases that are in better agreement with experiments than the original code version and data. The improvement can be quantified by a reduction in the mean difference between experimental and calculated release fractions from 0.70 to 0.07. 140La is taken to be representative of “low-volatile” fission products. To ensure that the existing acceptable performance for noble gases and volatile fission products is not adversely affected by the changes, comparisons were also made for a representative noble gas, 85Kr, and a representative volatile fission-product, 134Cs. These nuclides have the largest dataset in the SOURCE 2.0 validation test suite. This improvement provides increased confidence in the safety margin for equipment qualification in Loss-of-Coolant Accidents with Loss of Emergency Core Cooling.

SAND PILE AS A UNIVERSAL COMPUTER

1996 ◽  
Vol 07 (02) ◽  
pp. 113-122 ◽  
Author(s):  
ERIC GOLES ◽  
MAURICE MARGENSTERN
Keyword(s):  
Computer Program ◽  
Logic Gates ◽  
One Dimensional ◽  
Sand Pile ◽  
Pile Model

We show that the sand pile model is able to simulate, by specific configurations, logic gates and registers and, therefore any computer program. Further, we give its interpretation in terms of a set of several one-dimensional interacting avalanches.

A Study of the Behaviour of Joints

1992 ◽  
Vol 7 (3) ◽  
pp. 211-217 ◽  
Author(s):  
H.L. Zhao ◽  
J. Ma ◽  
S.R. Yan
Keyword(s):  
Computer Program ◽  
Nonlinear Analysis ◽  
Close Agreement ◽  
Experimental Results ◽  
One Dimensional ◽  
Loading Tests ◽  
Plastic Theory

The present paper describes the behaviour of three types of joints based on the elasto-plastic theory. A computer program has been developed to perform materially nonlinear analysis of these nodes. One-dimensional loading tests are also described and close agreement between the analytical and experimental results is achieved.

Micromagnetic Calculation of Neel Domain Wall Structure

2015 ◽  
Vol 233-234 ◽  
pp. 60-63
Author(s):  
Vladimir S. Semenov
Keyword(s):  
Domain Wall ◽  
Computer Program ◽  
High Speed ◽  
Discrete Distribution ◽  
Wall Structure ◽  
Magnetization Distribution ◽  
One Dimensional ◽  
Néel Domain Wall ◽  
Domain Wall Structure ◽  
Speed Computer

The numerical method of Brown and La Bonte [1] is used to calculate both the total equilibrium energy and the magnetization distribution of one-dimensional Neel domain wall (DW). The continuous magnetization distribution of Neel DW is replaced by a discrete distribution for which the magnetostatic energy was calculated precisely using high-speed computer program.

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