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SYNTH-C, Steady-State and Time-Dependent 3-D Neutron Diffusion with Thermohydraulic Feedback

Miscellaneous:

Abstract

1 - Description of problem or function: SYNTH-C-STEADY and SYNTH-C- TRANS solve respectively the steady-state and time-dependent few- group neutron diffusion equations in three dimensions x,y,z in the presence of fuel temperature and thermal-hydraulic feedback. The neutron diffusion and delayed precursor equations are approximated by a space-time (z,t) synthesis method with axially discontinuous trial functions. Three thermal-hydraulic and fuel heat transfer models are available viz. COBRA-3C/MIT model, lumped parameter (WIGL) model and adiabatic fuel heat-up model. 2 - Method of solution: The steady-state and time-dependent synthesis equations are solved respectively by the Wielandt's power method and by the theta-difference method (in time), both coupled with a block factorization technique and double precision arithmetic. The thermal-hydraulic model equations are solved by fully implicit finite differences (WIGL) or explicit-implicit difference techniques with iterations (COBRA-EC/MIT). 3 - Restrictions on the complexity of the problem: Except for the few- group limitation, the programs have no other fixed limitation so the ability to run a problem depends only on the available computer storage.
Authors:
Brega, E; [1]  Salina, E [2] 
  1. ENEL-CRTN, Bastioni di Porta Volta 10, Milan (Italy)
  2. A.R.S. Spa, Viale Maino 35, Milan (Italy)
Publication Date:
Apr 01, 1980
Product Type:
Miscellaneous
Resource Relation:
Other Information: Country of input: International Atomic Energy Agency (IAEA); 3 refs
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; COMPUTER PROGRAM DOCUMENTATION; FACTORIZATION; FEEDBACK; FUELS; HEAT; HEAT TRANSFER; NEUTRON DIFFUSION EQUATION; POWER REACTORS; S CODES; SPACE-TIME; STEADY-STATE CONDITIONS; SYNTHESIS; THERMAL HYDRAULICS; THERMODYNAMICS; THREE-DIMENSIONAL CALCULATIONS; TIME DEPENDENCE; WEBSITES
OSTI ID:
21230500
Research Organizations:
Organisation for Economic Co-Operation and Development, Nuclear Energy Agency - OECD/NEA, Le Seine Saint-Germain, 12 boulevard des Iles, F-92130 Issy-les-Moulineaux (France)
Country of Origin:
NEA
Language:
English
Other Identifying Numbers:
TRN: XN09V1101096204
Availability:
Available on-line: http://www.nea.fr/abs/html/nea-0594.html
Submitting Site:
INIS
Size:
[html] pages
Announcement Date:
Dec 02, 2009

Miscellaneous:

Citation Formats

Brega, E, and Salina, E. SYNTH-C, Steady-State and Time-Dependent 3-D Neutron Diffusion with Thermohydraulic Feedback. NEA: N. p., 1980. Web.
Brega, E, & Salina, E. SYNTH-C, Steady-State and Time-Dependent 3-D Neutron Diffusion with Thermohydraulic Feedback. NEA.
Brega, E, and Salina, E. 1980. "SYNTH-C, Steady-State and Time-Dependent 3-D Neutron Diffusion with Thermohydraulic Feedback." NEA.
@misc{etde_21230500,
title = {SYNTH-C, Steady-State and Time-Dependent 3-D Neutron Diffusion with Thermohydraulic Feedback}
author = {Brega, E, and Salina, E}
abstractNote = {1 - Description of problem or function: SYNTH-C-STEADY and SYNTH-C- TRANS solve respectively the steady-state and time-dependent few- group neutron diffusion equations in three dimensions x,y,z in the presence of fuel temperature and thermal-hydraulic feedback. The neutron diffusion and delayed precursor equations are approximated by a space-time (z,t) synthesis method with axially discontinuous trial functions. Three thermal-hydraulic and fuel heat transfer models are available viz. COBRA-3C/MIT model, lumped parameter (WIGL) model and adiabatic fuel heat-up model. 2 - Method of solution: The steady-state and time-dependent synthesis equations are solved respectively by the Wielandt's power method and by the theta-difference method (in time), both coupled with a block factorization technique and double precision arithmetic. The thermal-hydraulic model equations are solved by fully implicit finite differences (WIGL) or explicit-implicit difference techniques with iterations (COBRA-EC/MIT). 3 - Restrictions on the complexity of the problem: Except for the few- group limitation, the programs have no other fixed limitation so the ability to run a problem depends only on the available computer storage.}
place = {NEA}
year = {1980}
month = {Apr}
}