... Abstract This paper presented a multi-mesh approach for high-fidelity and geometry-independent neutronic/thermal-hydraulics (N-TH) coupling calculation capable of various nuclear reactor analyses using Reactor Monte Carlo code (RMC) and Computational Fluid Dynamics (CFD) code Ansys Fluent...

... of computational fluid dynamics (CFD) were used to study two radiators with different structures. Calculations are conducted for typical stable operating conditions. The calculation results show that under the same working conditions, the radiator designed with “fin - low temperature helium-xenon mixed gas” has...

... investigation shows that a development of the deposition model is still necessary to use a lagrangian method for particle transport and deposit in neptune_cfd. pumping station computational fluid dynamics clogging event head loss Lagrangian method Proceedings of the 2024 31st International...

... Abstract A three-dimensional accurate simulation was conducted using computational fluid dynamics methods for the spray removal of aerosols after a large break accident in a floating reactor. The Euler Euler Lagrange method was used to simulate gas solid liquid, and grid independence work...

... been studied experimentally and numerically. Firstly, the Computational Fluid Dynamics (CFD) model was established to simulate the thermal performance of STHE-SBs. Then, thermal performance data such as temperature and heat transfer power were experimentally obtained under steady-state conditions...

... the external explosion load. The shock wave propagation and attenuation was simulated dynamically for a new protection device withstand external explosion by use of the computational fluid dynamics software FLUENT. The method used in the simulation was firstly validated by comparing the simulation...

...-hydraulic calculation of pebble bed HTGRs and proposes a method for the two-dimensional (2-D) simulation using the commercial computational fluid dynamics (CFD) software ANSYS FLUENT. The pebble bed reactor core, fluid flow zones and control rod channels in the reflector are modeled with a porous media...

... of porous medium model in JUPITER to calculate natural convection induced by a decay heat of fuel debris. We confirmed that JUPITER gives a reasonable result for the temperature of fuel debris as a porous medium. Keywords: computational fluid dynamics, porous medium, natural convection, light water reactor...

... Abstract Velocity and temperature fields caused by mixed convection in vertical pipes containing liquid metals were predicted numerically with a computational fluid dynamics model based on a finite volume method. The constant heat flux was imposed as a boundary condition at pipe walls...

... computational fluid dynamics Proceedings of the 2022 29th International Conference on Nuclear Engineering ICONE29 August 8-12, 2022, Virtual, Online ICONE29-92655 NEUTRONIC AND THERMAL-HYDRAULIC ANALYSES FOR AN ADDITIVE MANUFACTURING REACTOR CORE WITH SIC MATRIX AND TRISO PARTICLE FUEL Wenbin Han Department...

... Abstract Validation of Computational Fluid Dynamics (CFD) models for industrial applications is more challenging due to the complex geometry and long duration and complexity of various postulated accident scenarios, resulting in different and wide ranges of length and time scales. Thus, CFD...

... is chosen as the structural material. The study is conducted by Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) analysis. The thermomechanical behavior including pressure drop, fluid temperature, velocity profile, stress, and deformation of the flow channel were considered in this work...

...-physics phenomena. This study uses Computational Fluid Dynamics (CFD) Lagrangian Particle Tracking (LPT) techniques in analysis of particle transfer behavior in fuel rod bundles focusing on flow swirl and turbulence impacts. It is hoped that high fidelity CFD results can provide insights into particle...

...COMPUTATIONAL STUDY ON THE SPHERICAL LAMINAR FLAME SPEED OF HYDROGEN-AIR MIXTURES Nuri Trianti, Kosuke Motegi, Tomoyuki Sugiyama, Yu Maruyama Japan Atomic Energy Agency, 2-4, Shirakata, Tokai, Naka-gun, Ibaraki, Japan 319-1195 ABSTRACT The computational fluid dynamics (CFD) have been developed...

...-branches but also includes the elbow that the resonance could occurs making pressure oscillation stronger than that of a single branch because of the interaction between the branches and the elbow. This study has investigated a Computational Fluid Dynamics (CFD) analysis methodology to predict and quantify...

... of location and amplitude. Different kind of topology for the nuclear power plant sites are studied in the project: near a cliff, in a plain or in a basin. In our study, the CFD (Computational Fluid Dynamics) open source tool Code_Saturne developed at EDF-R&D is used to simulate the wind over a French...

..., and implemented them to the computational fluid dynamics code named JUPITER. And we try to develop the coupled analysis frame work using SAMPSON and JUPITER to decrease uncertainty due to micro scale phenomena which cannot be calculate by severe accident analysis codes. From the preliminary analysis in fuel rod...

..., NRG is currently providing support to LeadCold Reactors with respect to thermal-hydraulic safety analyses utilizing Computational Fluid Dynamics (CFD) competences. The current paper gives a comprehensive description of a 3D CFD model created of SEALER UK Demo, which is a scaled-down demonstrator...

... it was important to point out, that Trio_U is able to cope the main flow and mixing phenomena. boron dilution coolant mixing ROCOM test facility computational fluid dynamics LES Trio_U e-mail: [email protected] e-mail: [email protected] Forschungszentrum Rossendorf - Institute of Safety...

... Computational Fluid Dynamics PWR fuel DNB For development of PWR spacer grids, it is necessary to confirm mechanical strength and thermal-hydraulic characteristics. Mitsubishi has applied Computational Fluid Dynamics (CFD) to thermal-hydraulic design of spacer grids. To satisfy...