Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer

Aleksandr Obabko, Elia Merzari, Landon Brockmeyer, Paul Fischer, Tanju Sofu, Brian Jackson, Michael Steer, Rodolfo Vaghetto, Yassin A. Hassan

Research output: Contribution to conferencePaper

Abstract

The turbulent mixing modeling for unsteady heat transfer problems in thermal-hydraulics has long been a focus in nuclear engineering community. One of the promising approaches that takes a full advantage of recent advances in HPC is the use of hierarchy of fidelity simulations that are cross-verified and validated in the regimes of interest. In particular, it is beneficial to have a higher fidelity reference simulation that could be used for benchmarking of the faster-turn-around lower-fidelity tools. Another good use of (validated) high-fidelity models that are less dependent on parameter and geometry perturbations than their lower-fidelity counterparts is to provide closure relations for reduced-order and -fidelity approaches where experiment data is either incomplete or not yet available. Here we report Nek5000 LES validation simulations for 37-pin and 61-pin wire-wrap conjugate heat transfer geometries. As a part NEAMS TH component of the SHARP multi-physics toolkit V&V-driven development, we have conducted a series of isothermal single wire-wrap pitch and multi pitch conjugate heat transfer calculations scaled up to 1 million MPI ranks with Reynolds number up to 120,000. The 37-pin 4-wire-wrap PLANDTL sodium experiment LES campaign was conducted as a part of the advanced M&S activity of CNWG under the U.S.-Japan Bilateral Commission Civil Nuclear Cooperation on advanced reactor R&D between DOE and JAEA. Originally funded by Nuclear Infrastructure Council (NIC) Cost-Share Award, the 61-pin FOA project was a joint venture with TerraPower, Texas A&M University, AREVA, and Argonne National Laboratory, a well-defined first-of-a-kind validation campaign for the CFD TH modeling of hexagonal packed fuel assemblies with helically wire-wrapped pin SFR geometries for both conjugate heat transfer and high-resolution isothermal validation.

Original languageEnglish (US)
Pages2036-2049
Number of pages14
StatePublished - Jan 1 2019
Event18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019 - Portland, United States
Duration: Aug 18 2019Aug 23 2019

Conference

Conference18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019
CountryUnited States
CityPortland
Period8/18/198/23/19

Fingerprint

wrap
heat transfer
wire
Wire
Heat transfer
Geometry
geometry
Nuclear engineering
Benchmarking
Computational fluid dynamics
Reynolds number
turbulent mixing
Physics
simulation
Experiments
Sodium
Hydraulics
charge flow devices
hydraulics
assemblies

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Instrumentation

Cite this

Obabko, A., Merzari, E., Brockmeyer, L., Fischer, P., Sofu, T., Jackson, B., ... Hassan, Y. A. (2019). Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer. 2036-2049. Paper presented at 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States.
Obabko, Aleksandr ; Merzari, Elia ; Brockmeyer, Landon ; Fischer, Paul ; Sofu, Tanju ; Jackson, Brian ; Steer, Michael ; Vaghetto, Rodolfo ; Hassan, Yassin A. / Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer. Paper presented at 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States.14 p.
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Obabko, A, Merzari, E, Brockmeyer, L, Fischer, P, Sofu, T, Jackson, B, Steer, M, Vaghetto, R & Hassan, YA 2019, 'Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer', Paper presented at 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States, 8/18/19 - 8/23/19 pp. 2036-2049.

Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer. / Obabko, Aleksandr; Merzari, Elia; Brockmeyer, Landon; Fischer, Paul; Sofu, Tanju; Jackson, Brian; Steer, Michael; Vaghetto, Rodolfo; Hassan, Yassin A.

2019. 2036-2049 Paper presented at 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States.

Research output: Contribution to conferencePaper

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AU - Obabko, Aleksandr

AU - Merzari, Elia

AU - Brockmeyer, Landon

AU - Fischer, Paul

AU - Sofu, Tanju

AU - Jackson, Brian

AU - Steer, Michael

AU - Vaghetto, Rodolfo

AU - Hassan, Yassin A.

PY - 2019/1/1

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Obabko A, Merzari E, Brockmeyer L, Fischer P, Sofu T, Jackson B et al. Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer. 2019. Paper presented at 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States.