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Relevant bibliographies by topics / CFD model Code_Saturne

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Academic literature on the topic 'CFD model Code_Saturne'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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Journal articles on the topic "CFD model Code_Saturne"

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Maison, Alice, Cédric Flageul, Bertrand Carissimo, Yunyi Wang, Andrée Tuzet, and Karine Sartelet. "Parameterizing the aerodynamic effect of trees in street canyons for the street network model MUNICH using the CFD model Code_Saturne." Atmospheric Chemistry and Physics 22, no. 14 (2022): 9369–88. http://dx.doi.org/10.5194/acp-22-9369-2022.

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Abstract. Trees provide many ecosystem services in cities such as urban heat island reduction, water runoff limitation, and carbon storage. However, the presence of trees in street canyons reduces the wind velocity in the street and limits pollutant dispersion. Thus, to obtain accurate simulations of pollutant concentrations, the aerodynamic effect of trees should be taken into account in air quality models at the street level. The Model of Urban Network of Intersecting Canyons and Highways (MUNICH) simulates the pollutant concentrations in a street network, considering dispersion and physico-

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Maison, Alice, Cédric Flageul, Bertrand Carissimo, Andrée Tuzet, and Karine Sartelet. "Parametrization of Horizontal and Vertical Transfers for the Street-Network Model MUNICH Using the CFD Model Code_Saturne." Atmosphere 13, no. 4 (2022): 527. http://dx.doi.org/10.3390/atmos13040527.

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Cities are heterogeneous environments, and pollutant concentrations are often higher in streets compared with in the upper roughness sublayer (urban background) and cannot be represented using chemical-transport models that have a spatial resolution on the order of kilometers. Computational Fluid Dynamics (CFD) models coupled to chemistry/aerosol models may be used to compute the pollutant concentrations at high resolution over limited areas of cities; however, they are too expensive to use over a whole city. Hence, simplified street-network models, such as the Model of Urban Network of Inters

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Lin, Chao, Yunyi Wang, Ryozo Ooka, et al. "Modeling of street-scale pollutant dispersion by coupled simulation of chemical reaction, aerosol dynamics, and CFD." Atmospheric Chemistry and Physics 23, no. 2 (2023): 1421–36. http://dx.doi.org/10.5194/acp-23-1421-2023.

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Abstract. In the urban environment, gas and particles impose adverse impacts on the health of pedestrians. The conventional computational fluid dynamics (CFD) methods that regard pollutants as passive scalars cannot reproduce the formation of secondary pollutants and lead to uncertain prediction. In this study, SSH-aerosol, a modular box model that simulates the evolution of gas, primary and secondary aerosols, is coupled with the CFD software, OpenFOAM and Code_Saturne. The transient dispersion of pollutants emitted from traffic in a street canyon is simulated using the unsteady Reynolds-aver

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Grecu, I. S., G. Dunca, D. M. Bucur, and M. J. Cervantes. "URANS numerical simulations of pulsating flows considering streamwise pressure gradient on asymmetric diffuser." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (2022): 012087. http://dx.doi.org/10.1088/1755-1315/1079/1/012087.

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Abstract The paper focuses on implementing the wall model developed by Manhart, in Reynolds Averaged Navier - Stokes (RANS) turbulence models used in the field of Computational Fluid Dynamics (CFD). This wall model considers the influence of the streamwise pressure gradient in addition to the existing wall models used in the usual CFD codes. In the present work, two RANS numerical simulations are carried out using the k-ω Shear Stress Transport (SST) turbulence model on an asymmetric diffuser geometry. One numerical simulation is carried out using the implementation of the Manhart wall model i

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Lacome, Jean-Marc, Guillaume Leroy, Lauris Joubert, and Benjamin Truchot. "Harmonisation in Atmospheric Dispersion Modelling Approaches to Assess Toxic Consequences in the Neighbourhood of Industrial Facilities." Atmosphere 14, no. 11 (2023): 1605. http://dx.doi.org/10.3390/atmos14111605.

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In the land use planning framework in the neighbourhood of industrial facilities, the current approach to predicting the consequences of massive toxic gas releases is generally based on Gaussian or integral models. For many years, CFD models have been more and more used in this context, in accordance with the development of high-performance computing (HPC). The present paper focuses on harmonising input data for atmospheric transport and dispersion (AT&D) modelling between the widely used approaches. First, a synthesis of the practice’s harmonisation for atmospheric dispersion modelling wi

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Madejski, Paweł. "Coal combustion modelling in a frontal pulverized coal-fired boiler." E3S Web of Conferences 46 (2018): 00010. http://dx.doi.org/10.1051/e3sconf/20184600010.

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The paper presents results of numerical modelling of pulverized coal combustion process in the coal-fired boiler. In the numerical model, coal combustion process includes particle heating, devolatilization, char combustion, as well as turbulent flow and radiative heat transfer was modelled. Presented modelling results were carried out using the Open Source CFD code - Code_Saturne created and developed by EDF R&D and were used to study the combustion of coal in power plant boiler with the objective of simulating the operational conditions and identifying factors of inefficiency. The behavio

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Gupta, Nikita, Nishant Bhardwaj, Gulam Muhammad Khan, and Vivek Dave. "Global Trends of Computational Fluid Dynamics to Resolve Real World Problems in the Contemporary Era." Current Biochemical Engineering 6, no. 3 (2020): 136–55. http://dx.doi.org/10.2174/2212711906999200601121232.

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Background: Computational fluid dynamics (CFD) came into existence with great success, thereby replacing the traditional methods used to simulate the problems related to the flow of fluid. First CFD utilitarian was introduced to the world in 1957, which was developed by a team at Los Alamos National Lab. For tremendous performance and to meet the expected results with ease for modern process conditions, engineers are now more inclined towards the use of simulation software rather than traditional methods. Hence, in the current scenario with the advancement of computer technologies, “CFD is rec

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Inzeo, Facundo P., Luciano Garelli, Hugo G. Castro, and Mario A. Storti. "Reimplementación del Modelo k−omega SST DDES en CODE_SATURNE para la Aerodinámica del Modelo GTS." Resúmenes de Mecánica Computacional 1, no. 6 (2024): 61. https://doi.org/10.70567/rmc.v1i6.158.

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El desarrollo de modelos de turbulencia híbridos surge de la necesidad de superar limitaciones de los modelos RANS (Reynolds-averaged Navier–Stokes) sin recurrir al prohibitivo costo computacional que supone el modelo LES (Large Eddy Simulation), fundamentalmente, a elevados números de Reynolds. Motivado por la resolución criteriosamente precisa del flujo próximo a la pared de un modelo de vehículo terrestre denominado Ground Transportation System, y haciendo uso del software CFD Code_Saturne®, se propone la reimplementación y ajuste de parámetros del modelo de turbulencia k-omega SST DDES (De

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Liu, Bo, Shuisheng He, Charles Moulinec, and Juan Uribe. "A Numerical Study of Turbulent Upward Flow of Super Critical Water in a 2 × 2 Rod Bundle With Nonuniform Heating." Journal of Nuclear Engineering and Radiation Science 6, no. 3 (2020). http://dx.doi.org/10.1115/1.4046260.

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Abstract This work is part of a benchmarking exercise organized by an IAEA in supercritical water-cooled reactor (SCWR) thermal-hydraulics aimed at improving the understanding and prediction accuracy of the thermal-hydraulic phenomena relevant to SCWRs. An experiment carried out using a 2 × 2 SCWR bundle at University of Wisconsin-Madison was modeled using an open-source computational fluid dynamics (CFD) code—Code_Saturne. The k–ω shear stress transport (SST) model was used to account for the buoyancy-aided turbulent flow in the fuel channel. Significant heat transfer deterioration (HTD) was

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Wang, L., Y. Fournier, J. F. Wald, and Y. Mesri. "A graph neural network-based framework to identify flow phenomena on unstructured meshes." Physics of Fluids 35, no. 7 (2023). http://dx.doi.org/10.1063/5.0156975.

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Driven by the abundant data generated from computational fluid dynamics (CFD) simulations, machine learning (ML) methods surpass the deterministic criteria on flow phenomena identification in the way that they are independent of a case-by-case threshold by combining the flow field properties and the topological distribution of the phenomena. The current most popular and successful ML models based on convolutional neural networks are limited to structured meshes and unable to directly digest the data generated from unstructured meshes, which are more widely used in real industrial CFD simulatio

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Dissertations / Theses on the topic "CFD model Code_Saturne"

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Alam, Boulos. "Modélisation numérique de la turbulence et de la dispersion atmosphérique par faibles vents en milieu urbain." Electronic Thesis or Diss., université Paris-Saclay, 2023. https://www.biblio.univ-evry.fr/theses/2023/interne/2023UPAST179.pdf.

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Cette thèse se situe dans le contexte de la modélisation de la dispersion atmosphérique, en particulier en présence de vents faibles. Les sources de pollution atmosphérique, souvent situées près du sol et influencées par des obstacles complexes, engendrent des concentrations élevées de polluants à proximité, ce qui se traduit par des fluctuations significatives de ces concentrations. Les vents faibles, généralement associés à des conditions atmosphériques stables, posent un défi particulier en matière de modélisation de la dispersion des polluants, nécessitant une analyse approfondie des donné

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Conference papers on the topic "CFD model Code_Saturne"

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Xu, Tingting, Jiesheng Min, Serge Bellet, Richard Howard, Dominique Alvarez, and Guofei Chen. "Design Investigation on Flow Diffuser With Code_Saturne: CFD Simulation Analysis." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-67767.

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The flow rate distribution at the entrance of the core plays a key role for reactor design since it has important implications for the performance, and efficient safety of a nuclear reactor. When the coolant passes from the downcomer to the core, it changes direction due to the inertia force and the curvature of the bottom vessel head. The internal components inside lower plenum work to homogenize the flow distribution. Their purpose is to prevent the formation of instabilities and the creation of vortices due to the flow reversal. In the frame of EDF’s new reactor design there is a desire to

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Liu, Jiawei, Puzhen Gao, Tingting Xu, Jiesheng Min, and Guofei Chen. "Numerical Simulation of Flow Field Inside Reactor Upper Plenum for PWR With Code_Saturne." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-68008.

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Flow characteristic in upper plenum has a strong influence on reactor functional margin and rod cluster control assembly (RCCA) guide tube wear. Upper plenum flow governs loops flow rate measurement via hot leg temperature which has also an influence on the reactor protection system. For RCCA guide tube wear, it appears in operation with RCCA flow-induced vibration, leading to its replacement. It is important to know the flow condition in the upper plenum, and in particular the outlet. Existing Generation III reactors have their own specialties on the design. Comparison between current technol

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Chen, Ru, Ronghao Liang, Lu Zhou, and Jiesheng Min. "A Sensitivity Analysis of Condensation Phenomena for a Passive Containment Cooling System by Using Code_Saturne Coupled With OpenTURNS." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92164.

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Abstract Computation-expensive problems have become more common in nuclear industry, originating from expensive analysis with the aim of reaching high accuracy. To overcome this challenge, surrogate modelling techniques are often proposed. Passive containment cooling system (PCCS) is an essential pattern to ensure the containment integrity in the case of accidental conditions for AP600 reactor, so determination of the most influential parameter as regards the heat transfer rate is of great significance to the optimization design and security analysis of nuclear power plants. This paper contrib

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Benhamadouche, S., P. Moussou, and C. Le Maitre. "CFD Estimation of the Flow-Induced Vibrations of a Fuel Rod Downstream a Mixing Grid." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-78054.

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Turbulent-induced vibrations of fuel assemblies in PWR power plants is a potential cause of deformation and of fretting wear damage. Because of the complexity of a 17 × 17 rod assembly with a length exceeding four meters, the prediction of its vibrations is still a challenging task as regards computer simulation. The Large Eddy Simulation (LES) technique provides the instantaneous pressure and velocity fields inside the fluid as well as the shear stress and the pressure along the walls. EDF inhouse open source CFD tool Code_Saturne is used in the present work with a 8 million cells grid to com

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Pe´niguel, Christophe, Marc Sakiz, Sofiane Benhamadouche, Jean-Michel Stephan, and Carine Vindeirinho. "Presentation of a Numerical 3D Approach to Tackle Thermal Striping in a PWR Nuclear T-Junction." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-2191.

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This paper presents a numerical study to tackle thermal striping phenomena occuring in piping systems. It is here applied to the Residual Heat Removal (RHR) bypass system. A large Eddy Simulation (L.E.S.) approach is used to model the turbulent flow in a T-junction. The thermal coupling between the Finite Volume CFD Code_Saturne and the Finite Element thermal code Syrthes, gives access to the instantaneous field inside the fluid and the solid. By using the instantaneous solid thermal fields, mechanical computations (as presented in (Stephan et al 2002)) are performed to yield the instantaneous

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Natchez, Sebastien, Romain Ceyrolle, Vincent Loizeau, and Hervé Cordier. "CFD Modeling of a Full Clogging Event in a Pumping Station With Neptune_cfd Solver: A Preliminary Investigation." In 2024 31st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/icone31-135781.

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Abstract The drum screen filters the water upstream of the pumping station of a NPP to protect it from debris entrance. These devices can be damaged in case of full clogging events because of drum deformation or air aspiration in the pumps located downstream of the filter. With climate change and the contingency to face more clogging events, EDF has lately tried to estimate their impact on pumping stations by different manners. The focus was set on passive filtration (static filter with no cleaning system) to reduce the complexity of the modelling and the objective is to determine how long it

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Leclercq, Christophe, Regiane Fortes-Patella, Antoine Archer, and Fabien Cerru. "First Attempt on Numerical Prediction of Cavitation Damage on a Centrifugal Pump." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69085.

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The cavitation erosion remains an industrial issue for many applications, mainly for hydraulic machines. This paper deals with the cavitation intensity, which can be described as the fluid mechanical loading causing cavitation damage. The estimation of this intensity is a challenging problem both in terms of modeling the cavitating flow and predicting the erosion due to cavitation. For this purpose, a numerical methodology was proposed to estimate cavitation intensity from 3D unsteady cavitating flow simulations. CFD calculations were carried out using Code_Saturne, which solves U-RANS equatio

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Li, Jingya, and Xiaoying Zhang. "CFD Simulation of Passive Containment Cooling System in Hot Leg SB-LOCA for 1000MW PWR." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66025.

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The passive cooling system (PCCS) for reactor containment is a security system that can be used to cool the atmosphere and reduce pressure inside of containment in case of temperature and pressure increase caused by vapor injection, which requires no external power because it works only with natural forces. However, as the driving forces from natural physical phenomena are of low amplitude, uncertainties and instabilities in the physical process can cause failure of the system. This article aims to establish a CFD simulation model for the Passive Containment Cooling System of 1000MW PWR using

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Bichet, Th, A. Martin, and F. Beaud. "Fluid Flow Separation in Down Comer During a Safety Injection Scenario: Quantitative Experimental Results." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56029.

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Within the framework of the nuclear power plant lifetime issue, the assessment of the French 900 MWe (3-loops) series Reactor Pressure Vessel (RPV) integrity was performed. A simplified analysis has shown that one of the most severe loading condition is given by the small break loss of coolant accidents (SBLOCA) due to the pressurized injection of cold water (9°C) into the cold leg and down comer of the RPV. Two main physical phenomena, considered important for the RPV cooling transient, were identified during numerical application obtained with EDF CFD tools. These phenomena are the fluid flo

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Martin, A., S. Benhamadouche, G. Bezdikian, F. Beaud, and F. Lestang. "CFD-Tool for Assessment of the Reactor Pressure Vessel Integrity in Pressure Thermal Shock Conditions: Influence of Turbulence Model and Mesh Refinement on the Vessel Thermal Loading During PTS Transient." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93311.

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Integrity evaluation methods for nuclear Reactor Pressure Vessels (RPVs) under Pressurised Thermal Shock (PTS) loading are applied by French Utility. They are based on the analysis of the behavior of relatively shallow cracks under loading PTS conditions due to the emergency cooling during SBLOCA (Small Break Loss of Coolant Accident) transients. This paper presents the Research and Development program started at E.D.F on the Computational Fluid Dynamic (CFD) determination of the cooling phenomena of a PWR vessel during a Pressurised Thermal Shock. The numerical results are obtained with the t

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