DIF3D-VARIANT 11.0: A Decade of Updates

Smith, M. A.; Lewis, E.E.; Shemon, Emily

doi:10.2172/1127298

Cited by 49 publications

(56 citation statements)

References 10 publications

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“…. The spatial basis functions are orthogonalized with the Gram-Schmidt orthogonalization procedure so that ij v ij V δ = F [15]. As a result, the first element of the coefficient vector of the scalar flux becomes the node-averaged scalar flux yielding…”

Section: Variational Nodal Methods For Diffusion Theorymentioning

confidence: 99%

Multiphysics Coupling of PROTEUS-NODAL and SAM for Molten Salt Reactor Simulation

Jaradat

Yang

Park

et al. 2020

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Verification tests of the coupled system of PROTEUS-NODAL and SAM were performed using the steady state and transient problems derived from the MSFR benchmark problem. Since the radial crossflow is neglected in the current SAM model, the effect of this simplification was first examined by comparing the steady state results with those obtained by a manually coupled calculation of PROTEUS-NODAL and ANSYS CFX. The SAM calculation used four parallel axial channels and CFX performed the full 3D CFD calculation in the cylindrical geometry of the MSFR core. Due to the neglect of the radial velocity field in the SAM calculation, SAM underestimated the axial velocity at the core center slightly, and this resulted in a slightly top-skewed power distribution: 0.1% overestimation in the upper part and 0.2% underestimation in the lower part of the core. The UTOP, ULOF, and ULOHS accidents of the MSFR transient benchmark were analyzed by including the outer loop in the SAM model. The results were compared with the PSI solutions from a coupled PARCS and TRACE calculation and the TUDelft solutions obtained from a coupled neutron diffusion and CFD calculation. In general, the power and core-averaged fuel temperature solutions of the coupled PROTEUS-NODAL and SAM calculations agreed well with the other solutions.

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Section: Variational Nodal Methods For Diffusion Theorymentioning

confidence: 99%

Multiphysics Coupling of PROTEUS-NODAL and SAM for Molten Salt Reactor Simulation

Jaradat

Yang

Park

et al. 2020

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“…In the NODAL solver, two methodology options are available: PN and Simplified PN (SPN). The PN approach is the identical methodology used in DIF3D-VARIANT [14] although the release version only handles diffusion theory on Cartesian, hexagonal, and triangular-z grids. For the SPN approach [4], a transverse integrated nodal methodology was built on the hexagonal grid model utilizing up to a SP3 approximation.…”

Section: Proteusmentioning

confidence: 99%

Development of the PROTEUS and ANSYS Coupled System for Simulating Heat Pipe Cooled Micro Reactors

Lee

Jung

2020

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The objective of this project is to develop the coupled system of PROTEUS/ANSYS for simulating a heat pipe cooled micro reactor. As an initial effort, while figuring out controlling ANSYS Mechanical with Workbench, the coupled system of PROTEUS/FLUENT in the CORBA environment were tried to demonstrate the coupled simulation for a transient problem of a heat pipe cooled micro reactor. Finally, the coupled system of PROTEUS/ANSYS was constructed using APDL commands in the CORBA environment, instead of ANSYS Workbench, since we found that ANSYS with the current version of Workbench Python scripting did not provide capabilities necessary for simulating a transient problem.

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“…The DIF3D code [1][2][3][4][5][6] consists of multi-group diffusion and transport solvers including the finite difference option DIF3D-FD, the transverse integrated nodal option DIF3D-NODAL, and the even-parity transport option DIF3D-VARIANT. We can write the steady state multi-group neutron transport equation as The standard notation is used [7] where ( , ) g r ψ Ω represents the neutron flux and , ( ) t g r Σ is the total interaction probability.…”

Section: Neutron-gamma Transport Equationsmentioning

confidence: 99%

GAMSOR: Gamma Source Preparation and DIF3D Flux Solution

Smith

Lee

Hill

2017

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DIF3D-VARIANT 11.0: A Decade of Updates

Abstract: The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov.

Cited by 49 publications

References 10 publications

Multiphysics Coupling of PROTEUS-NODAL and SAM for Molten Salt Reactor Simulation

Multiphysics Coupling of PROTEUS-NODAL and SAM for Molten Salt Reactor Simulation

Development of the PROTEUS and ANSYS Coupled System for Simulating Heat Pipe Cooled Micro Reactors

GAMSOR: Gamma Source Preparation and DIF3D Flux Solution

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