B.N. Aviles

MC21/CTF Solutions to OECD/NEA TVA Watts Bar Unit 1 Multiphysics Cycle 1 Benchmark Exercise 3

Edwin J. Grant, Daniel J. Kelly, B.N. Aviles

MC21/CTF Solutions to OECD/NEA TVA Watts Bar Unit 1 Multiphysics Cycle 1 Benchmark Exercises 1 and 2

Edwin J. Grant, Daniel J. Kelly, B.N. Aviles

MC21/CTF and VERA multiphysics solutions to VERA core physics benchmark progression problems 6 and 7

Daniel J. Kelly, Ann E. Kelly, B.N. Aviles, Andrew Godfrey et autres

The continuous energy Monte Carlo neutron transport code, MC21, was coupled to the CTF subchannel thermal-hydraulics code using a combination of Consortium for Advanced Simulation of Light Water Reactors (CASL) tools and in-house Python scripts. An MC21/CTF solution for VERA Core Physics …

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MC21/COBRA-IE and VERA-CS multiphysics solutions to VERA core physics benchmark problem #6

B.N. Aviles, Daniel J. Kelly, D. L. Aumiller, Daniel Gill et autres

The Virtual Environment for Reactor Applications (VERA) core physics benchmark problem #6, 3D Hot Full Power (HFP) assembly, from the Consortium for Advanced Simulation of Light Water Reactors (CASL) was simulated using the MC21 continuous energy Monte Carlo code coupled with the …

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Analysis of tally correlation in large light water reactors

Bryan Herman, Benoit Forget, Kord Smith, Paul Romano et autres

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Analysis of select BEAVRS PWR benchmark cycle 1 results using MC21 and OpenMC

Daniel J. Kelly, B.N. Aviles, Paul Romano, Bryan Herman et autres

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Improved diffusion coefficients generated from Monte Carlo codes

Bryan Herman, Benoit Forget, K. Smith, B.N. Aviles

Monte Carlo codes are becoming more widely used for reactor analysis. Some of these applications involve the generation of diffusion theory parameters including macroscopic cross sections and diffusion coefficients. Two approximations used to generate diffusion coefficients are assessed using the Monte Carlo …

MC21 analysis of the MIT PWR benchmark: Hot zero power results

Dylan Kelly, B.N. Aviles, Bryan Herman

MC21 Monte Carlo results have been compared with hot zero power measurements from an operating pressurized water reactor (PWR), as specified in a new full core PWR performance benchmark from the MIT Computational Reactor Physics Group. Included in the comparisons are axially …

Dynamic Three-Dimensional Process Water Density Model for Ultrasim

B.N. Aviles

A temperature dependent D2O density model has been developed for the 3-D hydraulics module in the near real-time plant analysis code ULTRASIM. By replacing the constant density, ULTRASIM is improved in two ways. First, all 3-D hydraulic analyses performed are more physically …

Diffusion theory methods for spatial kinetics calculations

Thomas M. Sutton, B.N. Aviles

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Diffusion theory methods for spatial kinetics calculations

Thomas M. Sutton, B.N. Aviles

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Diffusion theory methods for spatial kinetics calculations

Thomas M. Sutton, B.N. Aviles

In this paper we review methods for solving the group form of the time-dependent neutron diffusion equation. Methods for treating both the spatial and temporal variables are described. A major development during the past two decades has been the advent of transverse-integrated …

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