Utility subroutine package used by Applied Physics Division export codes. [LMFBR]

Adams, Claire; Derstine, K.L.; Henryson, H.; Hosteny, R.P.; Toppel, B.J.

doi:10.2172/5977015

Cited by 5 publications

(7 citation statements)

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“…In DIF3D-10 (and all preceding versions), an antiquated memory management scheme called BPOINTER [15] is used to circumvent the lack of dynamic storage capability in Fortran 77. BPOINTER is effectively restricted to 32-bit memory addressing and thus the total usable memory size is just 2 GB regardless of the actual computer memory.…”

Section: 2mentioning

confidence: 99%

FY2012 report on fast reactor toolset work (PROTEUS-Fast)

Wolters¹,

Smith²,

Derstine³

et al. 2012

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SUMMARYAs part of the NEAMS activity in DOE, a fast reactor simulation program was launched in April 2007, termed SHARP. The initial goal of SHARP was to develop a suite of modern simulation tools specifically for the analysis and design of sodium cooled fast reactors, and this goal has since been extended to consider all reactor types of interest. As part of that work, a high-fidelity deterministic neutron transport code named UNIC was started, providing a common framework for fast reactor neutronics tools.Focusing on UNIC, spatial de-homogenization increased the typical neutronics problem with a few hundred million degrees of freedom (DOF) into ones with hundreds of trillions of DOF. Such problems are beyond the capabilities of existing supercomputers. With the advent of future computer hardware, these high-fidelity problems can be solved but only after a multiyear development program to adapt codes such as UNIC to that technology. UNIC can presently be used on smaller problems (single assembly, multiple assemblies) with today's hardware, but it is also necessary to provide tools to solve the larger problems of interest, albeit without the aforementioned level of spatial de-homogenization.To address the desire to demonstrate the coupling capability of NEAMS, part of the FY12 funding was focused on preparing the legacy codes, termed PROTEUS-Fast, which are fully capable of solving full-scale fast reactor problems. A bulk of the work this year was focused on preparing and distributing the PROTEUS-Fast codes for use by all NEAMS users.The demonstration of a full coupling capability will require more follow on work, but significant progress was made this year preparing the interface coupling routines and preparing PROTEUS-Fast for use. The primary targets of interest in PROTEUS-Fast are DIF3D, DIF3D-K (kinetics), and VARI3D (reactivity coefficients), with REBUS (fuel cycle) being an auxiliary component updated for convenience. All codes in PROTEUS-Fast were verified and added to the BuildBot regression test. Unfortunately, all of the older codes suffered significant problems from the deprecated coding practices used within them and resulting conflicts with modern compilers. After some work, all of these issues were resolved and we feel confident in releasing them for use by others NEAMS members.With regard to specific upgrades, DIF3D-VARIANT was upgraded with a few months of effort to allow the large scale problems of interest to be executed. After significant study, we choose not to modify VARI3D to include a transport option, but to develop a new code, PERSENT (partially funded by an external project) which uses the DIF3D-VARIANT transport solution option. The outstanding features missing from MC 2 -3 were added, and MC 2 -3 has been released to RSICC. All of the remaining PROTEUS-Fast codes are either finished with the copyright and licensing procedure or are actively going through it. While that process will delay the targeted August 2012 release to RSICC for a few more months, the codes are ready for immediat...

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Section: 2mentioning

confidence: 99%

FY2012 report on fast reactor toolset work (PROTEUS-Fast)

Wolters¹,

Smith²,

Derstine³

et al. 2012

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“…Element n is the beginning location in array S (in COMMON BLOCK/SPACE/) of the array associated with element LABEL(n). This array is filled (and later used) in routine BARIN as follows: (10,10) ..…”

Section: Kof (20)mentioning

confidence: 99%

COMMIX-1AR/P: A three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems

Blomquist¹,

Garner²,

Gelbard³

1992

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The documentationof thecomputerprogramCOMMIX-1AR/Phas been dividedinto four volumes, each addressing different aspects of the documentation process and written from different perspectives. A brief summaryof the four volumes is as follows: Volume 1: "Equations and Numerics" (ANL-90/45) Presents the basic equations, assumptions, finite-difference techniques, and solution methods. Volume 2: "User's Guide" (ANL-92/33) A step-by-step description of how to use the program, including an input guide and a sample problem. Volume 3: "Programmer's Guide" (ANL-92/34) D A description of each subroutine and variable, showing linkage among these and their relation to the equations and variables presented in Volume 1. Volume 4: "Verification and Validation" A collection of representative problems run on this computer program and a comparison of the results obtained to those from theory, experiments, and other computer programs. The normal user will primarily use the information in Volumes 1, 2, and 4 and will be using a controlled configuration of the program. Volume 3 is designed as a consolidated source of reference material for those involved in the program development effort.

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“…5 for datset ISOTXS and including these in the input data stream in the block 11 NOSORT-A.ISO. 11 regarding the structure of the BCD input data. Thus a typical BCD input deck involving the input BCD datasets A.STP027, A.BURN, A.DIF3D, and A.NIP3 would appear as below, where only the dataset ISOTXS is declared as being an old dataset which is provided by the user for this run.…”

Section: Rebus-3 Bcd Inputmentioning

confidence: 99%

“…The spatial synthesis neutronics module is invoked by including the BCD input dataset A.SYN3D in the problem specifications. It should be noted that since SYN3D predates the FFORM free format input processor 11 , the user must provide the A.SYN3D data using the formatted version as given in Appendix H.…”

Section: Spatial Synthesis Option For the Neutronicsmentioning

confidence: 99%