Listar por tema "CFD"
Mostrando ítems 1-14 de 14
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A comprehensive hydrodynamic analysis of a full-scale oxidation ditch using Population Balance Modelling in CFD simulation
Elsevier (2019-10-15)This work exhibits the importance of the experimental validation when full-scale computational fluid dynamics (CFD) models are developed to provide a detailed analysis of the spatial variations in 3D of the fluid flow ... -
A New Coupled CFD/Neutron Kinetics System for High Fidelity Simulations of LWR Core Phenomena: Proof of Concept
Hindawi Publishing Corporation (2014-05)The Institute for Neutron Physics and Reactor Technology (INR) at the Karlsruhe Institute of Technology (KIT) is investigating the application of the meso- and microscale analysis for the prediction of local safety parameters ... -
Biological reactor retrofitting using CFD-ASM modelling
Elsevier (2018-09-15)In recent years, the interest in modelling activated sludge (AS) systems by means of Computational Fluid Dynamics (CFD) techniques has significantly increased. This work shows a successful case study combining CFD hydrodynamics ... -
CFD Turbulence Study of PWR Spacer-Grids in a Rod Bundle
Hindawi Publishing Corporation (2014-06)Nuclear fuel bundles include spacers essentially for mechanical stability and to influence the flow dynamics and heat transfer phenomena along the fuel rods. This work presents the analysis of the turbulence effects of a ... -
Development and validation of a one-dimensional solver in a CFD platform for boiling flows in bubbly regimes
Elsevier (2021)This paper presents a new one-dimensional solver for two-phase flow simulations where boiling is involved. The solver has been implemented within the OpenFOAM® platform. The basic formulation follows the Eulerian description ... -
Development of a modelling tool to perform hydrodynamics coupled with biological processes in the secondary stage of wastewater treatment plants
Universitat Jaume I (2019-12-20)Simulation models based on tools associated with computational fluid dynamics (CFD) and applied to wastewater treatment have been developed. The hydrodynamic effect of the internal elements that govern the flow behavior ... -
Diseño y análisis de un sistema de cavitación hidrodinámica mediante el uso de técnicas CFD para su utilización en sistemas de pretratamiento de fangos en las estaciones de aguas residuales
Universitat Jaume I (2021-09-16)Durante los últimos años, la necesidad de maximizar la producción energética a partir de la optimización del proceso de la digestión anaerobia de lodos ha centrado el interés tanto de la comunidad científica como de la ... -
Evaluation of hydraulic mixing performance in a full-scale anaerobic digester with an external liquid recirculation system using CFD and experimental validation
Elsevier Ltd. (2021-12-26)Anaerobic digestion (AD) has become an essential process for sludge treatment and its optimum performance is related to its mixing degree. In this study, a full-scale Anaerobic Digester (ADer) with an external recirculation ... -
Hydrodynamic and biochemical Computational Fluid Dynamic modelling of full-scale anaerobic digesters for wastewater treatment
Universitat Jaume I (2022-04-01)Anaerobic digestion is one of the most widely used biological treatments for the stabilisation of sewage sludge, but the effectiveness of the process depends on good mixing. The Computational Fluid Dynamics (CFD) technique ... -
Investigation of pressure drop in 3D replicated open-cell foams: Coupling CFD with experimental data on additively manufactured foams
Elsevier (2019-12-01)Open-cell foams as structured catalyst supports are promising candidates for the design of high throughput catalytic processes. In this contribution, we employ a coupled numerical and experimental approach to assess the ... -
Numerical and experimental characterization of the hydrodynamics and drying kinetics of a barbotine slurry spray
Elsevier (2019-02-23)Spray drying is a basic unit operation in several process industries such as food, pharmaceutical, ceramic, and others. In this work, a Eulerian-Lagrangian three-phase simulation is presented to study the drying process ... -
Numerical investigation of models for drag, lift, wall lubrication and turbulent dispersion forces for the simulation of gas-liquid two-phase flow
Elsevier (2015-06)In order to qualify CFD codes for accurate numerical predictions of transient evolution of flow regimes in a vertical gas–liquid two-phase flow in a pipe, suitable closure models (inter-phase forces) for the momentum ... -
Study of the effect of viscosity on the head and flow rate degradation in different multistage electric submersible pumps using dimensional analysis
Elsevier (2017-06)Multistage Electrical Submersible Pumps (ESPs) undergo performance degradation when operating with highly viscous fluids. Several studies on this subject seek to provide models to predict the pump performance under such ... -
Validation of NEPTUNE-CFD Two-Phase Flow Models Using Experimental Data
Hindawi Publishing Corporation (2014-06)This paper deals with the validation of the two-phase flow models of the CFD code NEPTUNEC-CFD using experimental data provided by the OECD BWR BFBT and PSBT Benchmark. Since the two-phase models of CFD codes are extensively ...