Numerical diffusion and the tracking of solute fields in system codes

Macián‐Juan, Rafael; Mahaffy, J.H.

doi:10.1016/s0029-5493(97)00290-2

Cited by 19 publications

(4 citation statements)

References 24 publications

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“…The y-and z-components of vapor momentum conservation are shown in Eqs. (16) and (17), respectively. Note, there are no gravitational body force terms in the y-and z-component equations and no turbulent mixing of transverse momentum.…”

Section: Mass Continuity Conservation Equation In Cartesian Coordinatesmentioning

confidence: 99%

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CTF Theory Manual: Version 4.3

Salko¹,

Avramova

Wysocki³

et al. 2022

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Section: Mass Continuity Conservation Equation In Cartesian Coordinatesmentioning

confidence: 99%

“…Eq. ( 90) was developed by Macian-Juan and Mahaffy [17] based on the dispersion model. The suggested value for G 0 was equal to 1.35.…”

Section: Second Order Godunov Schemementioning

confidence: 99%

CTF Theory Manual: Version 4.3

Salko¹,

Avramova

Wysocki³

et al. 2022

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“…Another approach is to perform numerical experiments with simple continuity waves as in Vyskocil's work and analyse the results with the "C-Curve" method originally developed to extract diffusion coefficients from experiments (see Levenspiel [227]). Application of this technique to a simple numerical problem was described by Macian and Mahaffy [228] as part of a study on limiting numerical diffusion in boron dilution problems. The method is basically 1-D, so is most useful for examining the behaviour of portions of a mesh after the nature of the flow field has been established.…”

Section: Discretization Schemesmentioning

confidence: 99%

Experimental Studies into the Non-Isothermal Mixing of Incompressible Liquid Counterflows in a Y-junction

Rayzapov

Sobornov

Dmitriev

et al. 2023

YadEn

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The OECD is a unique forum where the governments of 30 democracies work together to address the economic, social and environmental challenges of globalisation. The OECD is also at the forefront of efforts to understand and to help governments respond to new developments and concerns, such as corporate governance, the information economy and the challenges of an ageing population. The Organisation provides a setting where governments can compare policy experiences, seek answers to common problems, identify good practice and work to co-ordinate domestic and international policies.

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“…Equation (101) was developed by Macian-Juan and Mahaffy [18] based on the dispersion model. The suggested value for G 0 was equal to 1.…”

Section: Second-order Godunov Schemementioning

confidence: 99%

CTF Theory Manual: Version 4.4

Salko Jr.,

Avramova,

Wysocki

et al. 2023

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Coolant-Boiling in Rod Arrays -Two Fluids (COBRA-TF) is a thermal/hydraulic (T/H) simulation code designed for light-water reactor (LWR) vessel analysis. It uses a two-fluid, three-field (i.e., fluid film, fluid drops, and vapor) modeling approach. Both subchannel and 3D Cartesian forms of its governing equations are available for the solution. The code was originally developed by Pacific Northwest Laboratory in 1980 and has been used and modified by several institutions over the last few decades.COBRA-TF also found use at the Pennsylvania State University (PSU) by the Reactor Dynamics and Fuel Modeling Group (RDFMG) and has been improved, updated, and subsequently rebranded as CTF. CTF was later adopted in the early 2010s by Oak Ridge National Laboratory (ORNL) for use in the Consortium for Advanced Simulation of Light Water Reactors (CASL) program, which led to a significant advancement of the code's software quality, modeling accuracy, testing systems, and capabilities for improved support in modeling common LWR nominal and transient behavior. As part of the improvement process, it was necessary to generate sufficient documentation for the public domain code which had lacked such material upon being adopted by RDFMG. This document serves as a theory manual for CTF, detailing the many two-phase heat transfer, drag, and important accident scenario models contained in the code, as well as the numerical solution process utilized. Additional documents available in the CTF documentation suite include the user manual and the verification and validation manual.

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Numerical diffusion and the tracking of solute fields in system codes

Cited by 19 publications

References 24 publications

CTF Theory Manual: Version 4.3

CTF Theory Manual: Version 4.3

Experimental Studies into the Non-Isothermal Mixing of Incompressible Liquid Counterflows in a Y-junction

CTF Theory Manual: Version 4.4

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