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Keywords: CFD
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Proceedings Papers

Proc. ASME. ICONE28, Volume 1: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications, V001T03A003, August 4–6, 2021
Paper No: ICONE28-64134
...]. On the same time, SAMOFAR in the UE project solidification and melting process. has also developed freeze valve design for MSFR [4], this study is still limited in the computational. The EU researcher develop Keywords: Advanced Reactors, MSR, Safety analysis, CFD, a freeze valve which is different with MSRE...
Proceedings Papers

Proc. ASME. ICONE28, Volume 1: Operating Plant Challenges, Successes, and Lessons Learned; Nuclear Plant Engineering; Advanced Reactors and Fusion; Small Modular and Micro-Reactors Technologies and Applications, V001T04A017, August 4–6, 2021
Paper No: ICONE28-65828
... and the 10 CFD, porous media model MWt High Temperature Reactor (HTR-10) in China, with design outlet temperatures of 950 ºC and 700 oC respectively [2]. * Contact author: jinyongf@mit.edu V001T04A017-1 Copyright © 2021 by ASME Compared to the light water reactors (LWRs), the main Figure 1: Conceptual design...
Proceedings Papers

Proc. ASME. ICONE28, Volume 2: Nuclear Fuels, Research, and Fuel Cycle; Nuclear Codes and Standards; Thermal-Hydraulics, V002T07A005, August 4–6, 2021
Paper No: ICONE28-63380
... for computational fluid GREEK LETTERS dynamics (CFD) code (RV-CFD model) has been developed to thermal diffusivity [m2/s] evaluate the core cooling performance under natural circulation conditions. For the design study, the RV-CFD model is surface permeability demanded to simulate with reasonable calculation...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T08A013, August 4–6, 2021
Paper No: ICONE28-64755
...Abstract Abstract This paper is focused on the applicability of variable-pitch helical wire in a 7-pin SFR test fuel bundle by using CFD method. The differences between the variable-pitch helical wire scheme and the even-pitch helical wire scheme in the pressure loss, velocity, temperature...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T08A016, August 4–6, 2021
Paper No: ICONE28-64908
... computational fluid dynamics (CFD) capabilities of MOOSE. A 2D flow past a round cylinder scenario is simulated in the Flow Dynamic Viscosity MOOSE environment to investigate the effectiveness of the N-S module. The simulation assumed an unsteady laminar flow with Inlet Bulk Velocity a Reynolds number of 200...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T08A018, August 4–6, 2021
Paper No: ICONE28-65276
... flow conditions and the non-symmetric IHX operation. Multi-scale calculations are carried out using Computational Fluid Dynamics (CFD) in order to better understand the vortex formation at the IHX plenum and the associated possible gas entrainment into the vortex from the hot pool free surface...
Proceedings Papers

Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A029, August 4–6, 2021
Paper No: ICONE28-64342
... distributions of void fraction, liquid temperature and phase velocity can be obtained, which indicates that the improved IAC model coupled in boiling flow model can be applied in CFD simulation of two-phase boiling flow. The improved model provides a new calculation approach for the IAC in the boiling flow...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A013, August 4–5, 2020
Paper No: ICONE2020-16593
...CFD PRELIMINARY ASSESSMENT OF THE ALFRED FA THERMAL-HYDRAULICS R. Marinari University of Pisa Department of Civil and Industrial Engineering Pisa, Italy G. Grasso ENEA R.C., Via Martiri di Monte Sole 4, Bologna, Italy I. Di Piazza, M. Tarantino ENEA FSN-ING C.R. Brasimone Camugnano (BO), Italy M...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A025, August 4–5, 2020
Paper No: ICONE2020-16852
... can be applied to CFD code by using (i) source terms in the transport equations or (ii) using respective boundary conditions at the Steam Condensation Region (SCR). Previous validation against PPOOLEX and PANDA tests using the source terms approach faced challenges in momentum distribution. Therefore...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A002, August 4–5, 2020
Paper No: ICONE2020-16080
...TOWARD INDUSTRIAL APPLICABILITY OF DNB PREDICTIONS IN CFD WITH IMPROVED WALL BOILING MODELS Jinyong Feng1, Zachary Skirpan, Emilio Baglietto Massachusetts Institute of Technology Cambridge, MA ABSTRACT The design of Pressurized Water Reactor (PWR) fuel has to rely on costly prototypical...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A003, August 4–5, 2020
Paper No: ICONE2020-16139
...IMPLEMENTATION OF A PARTICLE RESUSPENSION MODEL IN A CFD CODE: APPLICATION TO AN AIR INGRESS SCENARIO IN A VACUUM TOROIDAL VESSEL Thomas GELAIN Institut de Radioprotection et de Sûreté Nucléaire (IRSN) PSN-RES, SCA Gif-sur-Yvette, 91192, France Laurent RICCIARDI Institut de Radioprotection et de...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A004, August 4–5, 2020
Paper No: ICONE2020-16193
..., improvement and innovation. Computational Fluid Dynamics (CFD) has been used to understand the working principles of moisture separating devices, in particular the OpenFOAM platform has been utilized for this scope. Eulerian/Lagrangian models, wall-droplet interaction and water film formation models have been...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T03A019, August 4–5, 2020
Paper No: ICONE2020-16747
... simulation method is validated with visualization results and force from an air-water flow at the elbow of the piping system. Keywords: large diameter pipe, two-phase flow, horizontal pipe, 90-degree elbow, bend, stratified flow, CFD NOMENCLATURE projected area of a bubble (m2) interfacial acial area...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A002, August 4–5, 2020
Paper No: ICONE2020-16056
... for the streamline and temperature contours. phase change materials unconstrained constrained spherical capsule CFD A COMPARATIVE STUDY OF CONSTRAINED AND UNCONSTRAINED MELTING INSIDE A SPHERE Rohit Kothari1 Discipline of Mechanical Engineering, Indian Institute of Technology Indore, Simrol, Indore...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A052, August 4–5, 2020
Paper No: ICONE2020-16934
... aim to use modern CFD methods to investigate the three-dimensional flow in thermosiphons. This paper focuses on rectangular thermosiphons. In particular, we perform a series of high-fidelity simulations using the spectral element code Nek5000 to investigate the stability behavior of the flow...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A017, August 4–5, 2020
Paper No: ICONE2020-16239
... uniformity and high velocity, but at the expense of increasing the pressure losses. Owing to the practical challenges of conducting experimental investigations with molten lead, Computational Fluid Dynamics (CFD) could a practical alternative to generate large enough database to develop a friction factor...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A050, August 4–5, 2020
Paper No: ICONE2020-16857
... to a value. Based on a CFD simulation for the experiment, gas velocity field was investigated. The measured and calculated particle number concentration decays agreed well. TOSQAN aerosol removal experiment particle diameter and concentration droplet mass flux CFD EXPERIMENTAL STUDY ON AEROSOL...
Proceedings Papers

Proc. ASME. ICONE21, Volume 4: Thermal Hydraulics, V004T09A002, July 29–August 2, 2013
Paper No: ICONE21-15015
... a minority might flow in varieties of gaps between graphite blocks without being heated enough. In our previous papers, the method of combined flow network and CFD was established to analyze several bypass flows in HTR-PM. In current paper, we focused on bypass flows in control rod channels by introducing...
Proceedings Papers

Proc. ASME. ICONE21, Volume 4: Thermal Hydraulics, V004T09A063, July 29–August 2, 2013
Paper No: ICONE21-15897
... 1 Copyright © 2013 by ASME CFD ANALYSIS OF THERMAL STRATIFICATION OF CHINA LEAD ALLOY COOLED RESEARCH REACTOR (CLEAR-I) Pengcheng ZHAO University of Science and Technology of China, Hefei, Anhui, China Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences Hefei, Anhui, China...
Proceedings Papers

Proc. ASME. ICONE21, Volume 3: Nuclear Safety and Security; Codes, Standards, Licensing and Regulatory Issues; Computational Fluid Dynamics and Coupled Codes, V003T10A004, July 29–August 2, 2013
Paper No: ICONE21-15049
... downstream. The flow mixing impact travels much longer than that caused by the most conventional mixing vanes. Nuclear fuel flow Characteristics Mixing vane CROSS-CELL vane CFD FLOW CHARACTERISTICS OF FUEL BUNDLE WITH NEW MIXING VANE DESIGN Yu Wenchi Nuclear Fuel Research & Development Center...