Browsing by Subject "Heat -- Convection"
Now showing items 1-15 of 15
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Advanced study for the numerical approximation of Navier-Stokes equations by implementation of a finite volume solver
(Universitat Politècnica de Catalunya, 2019-10)
Bachelor thesis
Restricted access - author's decision
Covenantee: Rheinisch-Westfälische Technische Hochschule AachenThe objective of the thesis is to build different fluid solvers from scratch, whereby the following three cases are considered: Resolution of diffusion problems, convection-diffusion and Navier-Stokes equations. In the ... -
Continuation of double Hopf points in thermal convection of rotating fluid spheres
(2021-01-26)
Article
Open AccessThe thermal convection of rotating fluids in spherical geometry is a classical problem with application to many geophysical and astrophysical problems. The study of the transition to periodic solutions from the steady ... -
Effect of using external vertical fins in phase change material modules for domestic hot water tanks
(2006-04)
Article
Open AccessThe effect of using external vertical fins in Phase Change Materials (PCM) modules to improve the natural convection coefficient in water is studied in this paper. The use of PCM in a water tank working with a solar system ... -
Film boiling heat transfer from micro heat sinks driven by Bénard-Marangoni convection
(2021-01-26)
External research report
Open AccessBénard-Marangoni convection and its significance with regard to film boiling heat transfer from micro heat sinks is discussed. In recent works cooling performance of micro heat sinks has been studied showing that two-phase ... -
Impact of thermally driven ocean turbulence on the melting of ice
(2016-03-23)
Article
Open AccessDirect numerical simulation and laboratory experiments are used to investigate turbulent convection beneath a horizontal ice–water interface. Scaling laws are derived that quantify the dependence of the melt rate of the ... -
Large eddy and direct numerical simulations of a turbulent water-filled differentially heated cavity of aspect ratio 5
(2014-10-01)
Article
Open AccessNatural convection in a differentially heated cavity is characterized by different phenomena such as laminar to turbulent flow transition in the boundary layer, turbulent mixing, and thermal stratification in the core of ... -
Moisture statistics in free convective boundary layers growing into linearly stratified atmospheres
(2017-07-27)
Article
Open AccessWe use dimensional analysis and direct numerical simulations to characterize specific humidity statistics in the equilibrium (quasi-steady) entrainment regime of cloud-free convective boundary layers that grow into ... -
On the feasibility of affordable high-fidelity CFD simulations for indoor environment design and control
(2020-10-15)
Article
Restricted access - publisher's policyComputational fluid dynamics (CFD) is a reliable tool for indoor environmental applications. However, accurate CFD simulations require large computational resources, whereas significant cost reduction can lead to unreliable ... -
Oscillatory convection in rotating spherical shells: low Prandtl number and non-slip boundary conditions
(2015-10-01)
Article
Open AccessA five-degree model, which reproduces faithfully the sequence of bifurcations and the type of solutions found through numerical simulations of the three-dimensional Boussinesq thermal convection equations in rotating ... -
Plume or bubble? Mixed-convection flow regimes and city-scale circulations
(2020-08-25)
Article
Open AccessLarge-scale circulations around a city are co-modulated by the urban heat islandand by regional wind patterns. Depending on these variables, the circulations fall into different regimes ranging from advection-dominated ... -
Solutocapillary for self-control precipitation in enclosed geometries by using microcavities
(2020-12)
Article
Restricted access - publisher's policyIn this work the possibility to endow enclosed geometries with a passive feedback mechanism to prevent precipitation when their walls are deliberately lined with air-filled hydrophobic microcavities is discussed -
Study of an adiabatic CAES plant for electricity storage in a photovoltaic plant / Phase changing materials
(Universitat Politècnica de Catalunya / Lunds Tekniska Högskola, 2013)
Bachelor thesis
Open Access
Covenantee: Lunds Tekniska HögskolaAquest document inclou els dos projectes que he realitzat en modalitat d’estudiant d’intercanvi a la Universitat de Lund, Suècia com a projecte de fi de grau corresponent a la titulació de grau en Enginyeria de Tecnologies ... -
Study of the turbulent Prandtl number influence on the mixed convection heat transfer
(Universitat Politècnica de Catalunya / Karlsruher Institut für Technologie, 2013)
Bachelor thesis
Restricted access - author's decision
Covenantee: Karlsruher Institut für TechnologieThe present study is a first insight into the world of Computational Fluid Dynamics (CFD)in power engineering. That is, numerical methods and algorithms are used to solve and analyze problems that involve heat and fluid ... -
The effect of boundary plates on the onset of natural convection
(Universitat Politècnica de Catalunya / Institut National Polytechnique de Toulouse, 2009)
Master thesis (pre-Bologna period)
Restricted access - author's decisionSe presenta un estudio de estabilidad analítico del desarrollo de la convección natural en un medio poroso de configuración geométrica horizontal, saturado por una mezcla fluida binaria, es decir, por una mezcla de dos ... -
Thermal convection in autogravitating spheres at low Ekman numbers
(2015)
Conference lecture
Open Access
