STRUCTure-based URANS simulations of thermal mixing in T-junctions

• Published in: Nuclear engineering and design Vol. 340; pp. 275 - 299
• Main Authors: Feng, Jinyong, Frahi, Tarek, Baglietto, Emilio
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.12.2018; Elsevier BV
• Subjects: 2G-URANS; Accuracy; Cold junctions; Computational fluid dynamics; Computational grids; Computer applications; Computer simulation; Crack propagation; Data processing; Deformation; Eddies; Electric power generation; Fatigue; Fatigue failure; Finite element method; Flow velocity; Fluid flow; Hybrid turbulence models; Industrial applications; Large eddy simulation; LES; Model accuracy; Power plants; Predictions; Reynolds averaged Navier-Stokes method; Reynolds number; Simulation; Spectral analysis; T-junction; Temperature effects; Thermal fatigue; Thermal striping; Turbulence; Turbulence models; Turbulent mixing; Unsteady flow; T-junction; 2G-URANS; Hybrid turbulence models; LES; Thermal striping

•A robust STRUCTure-based 2G-URANS turbulence model is demonstrated.•A rigorous grid convergence study is performed.•The STRUCT turbulence model can adopt URANS like meshes with improved accuracy.•Results from STRUCT model are in good agreement with the DNS data and LES solutions. Turbulent mixing o...