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Modellierung kinetisch kontrollierter, turbulenter Flammen für Magerbrennkonzepte
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ISBN: 1000035938 3731500752 Year: 2013 Publisher: KIT Scientific Publishing

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The design of technical combustion systems demands efficient as well as precise models correctly predicting the interaction of turbulence and combustion. Main focus of this work is to develop and evaluate turbulent combustion models applicable for the simulation of modern lean combustion concepts using gaseous or liquid fuels. Within this work these models are both validated on model flames and applied to technical systems.


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Strömungsmechanischer Beitrag zur Planung von Herzoperationen
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ISBN: 1000012375 386644415X Year: 2009 Publisher: KIT Scientific Publishing

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Mit der Motivation, einen strömungsmechanischen Beitrag zur Planung und Bewertung von Herzoperationen zu leisten, wurde am Institut für Strömungslehre das Karlsruhe Heart Model (KaHMo) entwickelt. Ziel dieser Arbeit war die abschließende Entwicklung des KaHMo-MRT hin zu einem einsatzfähigen Modell für die klinische Anwendung. Im Fokus standen hierbei die Modellierung des Vorhofs sowie die Validierung der linken Herzkammer.


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Modellierung von Autoabgaskatalysatoren
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ISBN: 1000015953 3866444834 Year: 2010 Publisher: KIT Scientific Publishing

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Diese Arbeit befasst sich mit der numerischen Modellierung von monolithischen Autoabgaskatalysatoren unter Berücksichtigung verschiedener Transportmodelle in Gasphase und poröser Washcoatschicht sowie heterogener Reaktionsmechanismen, die auf Elementarreaktionen aufbauen. Hierbei wird der Einfluss mehrerer Modellparameter auf die Schadstoffumsätze im Katalysator mit Hilfe des Softwarepakets zur Simulation reaktiver Strömungen DETCHEM untersucht.


Book
Numerical Haemodynamics in the Human Heart
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ISBN: 1000080044 3731507579 Year: 2018 Publisher: KIT Scientific Publishing

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The characteristic vortex formation in the ventricles is believed to be affected at an early stage of heart diseases. First, post-processing of patient-specific data has to be standardised. The chosen methods, a combination of Eulerian and Lagrangian techniques, are characterised by means of necessary spatial and temporal resolutions. Second, the goal is to find the best cost-benefit approach for modelling of the mitral valve, as it affects vortex formation and progression in the left ventricle.


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A Smoothed Particle Hydrodynamics Method for the Simulation of Centralized Sloshing Experiments
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Year: 2013 Publisher: KIT Scientific Publishing

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The Smoothed Particle Hydrodynamics (SPH) method is proposed for studying hydrodynamic processes related to nuclear engineering problems. A problem of possible recriticality due to the sloshing motions of the molten reactor core is studied with SPH method. The accuracy of the numerical solution obtained in this study with the SPH method is significantly higher than that obtained with the SIMMER-III/IV reactor safety analysis code.

Keywords

CFD --- Sloshing --- Recriticality --- SPH --- Free Surface Flows


Book
A Smoothed Particle Hydrodynamics Method for the Simulation of Centralized Sloshing Experiments
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Year: 2013 Publisher: KIT Scientific Publishing

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Abstract

The Smoothed Particle Hydrodynamics (SPH) method is proposed for studying hydrodynamic processes related to nuclear engineering problems. A problem of possible recriticality due to the sloshing motions of the molten reactor core is studied with SPH method. The accuracy of the numerical solution obtained in this study with the SPH method is significantly higher than that obtained with the SIMMER-III/IV reactor safety analysis code.

Keywords

CFD --- Sloshing --- Recriticality --- SPH --- Free Surface Flows


Book
Notes on computational fluid dynamics : general principles
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ISBN: 9781399920780 Year: 2022 Publisher: Reading : CFD Direct,

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"Notes on Computational Fluid Dynamics (CFD) was written for people who use CFD in their work, research or study, providing essential knowledge to perform CFD analysis with confidence. It offers a modern perspective on CFD with the finite volume method, as implemented in OpenFOAM and other popular general-purpose CFD software. Fluid dynamics, turbulence modelling and boundary conditions are presented alongside the numerical methods and algorithms in a series of short, digestible topics, or notes, that contain complete, concise and relevant information. The book benefits from the experience of the authors: Henry Weller, core developer of OpenFOAM since writing its first lines in 1989; and, Chris Greenshields, who has delivered over 650 days of CFD training with OpenFOAM. "


Book
A Smoothed Particle Hydrodynamics Method for the Simulation of Centralized Sloshing Experiments
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Year: 2013 Publisher: KIT Scientific Publishing

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Abstract

The Smoothed Particle Hydrodynamics (SPH) method is proposed for studying hydrodynamic processes related to nuclear engineering problems. A problem of possible recriticality due to the sloshing motions of the molten reactor core is studied with SPH method. The accuracy of the numerical solution obtained in this study with the SPH method is significantly higher than that obtained with the SIMMER-III/IV reactor safety analysis code.


Book
GASFLOW-MPI: A Scalable Computational Fluid Dynamics Code for Gases, Aerosols and Combustion. Band 1 (Theory and Computational Model (Revision 1.0) und Band 2 (Users' Manual). (KIT Scientific Reports ; 7710 und 7711)
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ISBN: 1000050392 3731504472 Year: 2016 Publisher: KIT Scientific Publishing

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Karlsruhe Institute of Technology (KIT) is developing the parallel computational fluid dynamics code GASFLOW-MPI as a best-estimate tool for predicting transport, mixing, and combustion of hydrogen and other gases in nuclear reactor containments and other facility buildings. GASFLOW-MPI is a finite-volume code based on proven computational fluid dynamics methodology that solves the compressible Navier-Stokes equations for three-dimensional volumes in Cartesian or cylindrical coordinates.


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Fortgeschrittene Methoden zur Beschreibung der Wirbelschicht-Sprühgranulation
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ISBN: 1000036117 3731500876 Year: 2013 Publisher: KIT Scientific Publishing

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A multiscale simulation model is developed by combining the CFD Simulation and the population balance equations to describe a transient process of fluidized bed spray granulation. In this model, the CFD simulation generates the particle growth and nucleation rates in consideration of fluid dynamics, drying and multiple interactions, such as drops deposition, dust integration and nucleation between different particles (drops, dust and granules).

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