A hybrid domain overlapping method for coupling System Thermal and CFD codes

被引：9

作者：

Huxford, Aaron ^{[1
]}

Leite, Victor Coppo ^{[2
]}

Merzari, Elia ^{[2
]}

Zou, Ling ^{[3
,4
]}

Petrov, Victor ^{[1
]}

Manera, Annalisa ^{[1
,4
,5
]}

机构：

[1] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA

[2] Penn State Univ, Dept Nucl Engn, State Coll, PA USA

[3] Argonne Natl Lab, Nucl Sci & Engn Div, Lemont, IL USA

[4] Swiss Fed Inst Technol, Dept Mech & Proc Engn, Zurich, Switzerland

[5] Paul Scherrer Inst, Lab Reactor Phys & Thermal Hydraul, Villigen, Switzerland

来源：

ANNALS OF NUCLEAR ENERGY | 2023年 / 189卷

基金：

美国国家科学基金会;

关键词：

Coupling; Overlapping; STH; SAM; CFD; NekRS; SIMULATIONS; VALIDATION;

D O I：

10.1016/j.anucene.2023.109842

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A hybrid multiscale coupling methodology based on a domain overlapping approach has been developed for coupling System Thermal Hydraulics (STH) and Computational Fluid Dynamics (CFD) codes. The method has been implemented between the modern STH code SAM and the CFD code NekRS, using the coupling tool Cardinal. The coupling aims to extend the STH code's applicability to scenarios where local momentum and energy transfers are important yet difficult for STH codes to capture, such as three-dimensional mixing. Two coupling strategies are implemented and compared: a hybrid domain overlapping method and the conventional domain decomposition method. The strategies are applied to two closed-loop applications, and the present method shows superior stability behavior when compared to the domain decomposition method. Then, the present coupling method is validated against experimental data from a double T-junction experiment. The present STH/CFD coupling shows improved agreement with experimental data when compared to STH standalone simulations.

引用

页数：11

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