Application of the Lattice Boltzmann Method to Issues of Coolant Flows in Nuclear Power Reactors
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Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2099.1/19944
Tutor / directorMacián-Juan, Rafael
Tipus de documentProjecte/Treball Final de Carrera
Data2013
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
In the past years, the Lattice Boltzmann Method (LBM) has been widely
used by the scientific community as an alternative to the conventional numerical
solvers for the Navier-Stokes (NS) equations. The present work in
this thesis aims at studying the LBM for fluid dynamics. The main topics are
concentrated in three aspects: the description of the model, the validation of
this model, and the application of this model to an engineering case.
In the first part the model is defined. Therefore, the Boltzmann equation and
the Boltzmann distribution are defined. Also, the explanation of the framework
where this method works is included. Then, the BGK-Approximation
and the discretization of the Boltzmann equation are introduced. The algorithm
needed to apply the model will also be explained together with numerical
stability issues that one must take into account when it is implemented.
An explanation of the different boundary conditions will also be summarized.
In chapter 3 the LBM will be applied to different 3D cases to test its accuracy
and validate the model. The Poiseuille and Couette flow will be studied and
compared analytically. Lid driven cavity and the flow around an obstacle
will also be simulated.
In chapter 4, after the model has been validated, the LBM is used to simulate
a complex situation to simulate the flow pattern in a lower plenum of a PWR
reactor core, taking into account several simplifications, to understand the
possibilities of the LBM implemented.
To be able to perform chapter 3 and 4 an implementation in C++ has been
developed.
MatèriesNuclear reactors -- Cooling, Computational fluid dynamics, Lattice Boltzmann methods, Refrigerants, Reactors nuclears -- Refrigeració, Dinàmica de fluids -- Simulació per ordinador, Mètodes reticulars de Boltzmann, Refrigerants
ProvinençaAquest document conté originàriament altre material i/o programari no inclòs en aquest lloc web
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Fitxers | Descripció | Mida | Format | Visualitza |
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Master Thesis - ... Nuclear Power Reactors.pdf | Report | 2,318Mb | Visualitza/Obre |