Browsing by Subject "Heat--Transmission"
Now showing items 1-20 of 55
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A 3D symmetry-preserving simulation of a concentrated photovoltaic thermal (CPVT) solar collector
(Institute of Physics (IOP), 2024)
Conference report
Open AccessIn this work, a general collocated and unconditionally stable framework on unstructured meshes for solving Conjugate Heat Transfer (CHT) problems is presented by means of preserving the underlying symmetries of the continuous ... -
A level-set model for thermocapillary motion of deformable fluid particles
(2016-12-01)
Article
Open AccessA new level-set model is proposed for simulating immiscible thermocapillary flows with variable fluid-property ratios at dynamically deformable interfaces. The Navier–Stokes equations coupled with the energy conservation ... -
A parallel finite-element framework for the thermal analysis of metal additive manufacturing with powder methods
(Universitat Politècnica de Catalunya, 2016-10-21)
Master thesis
Restricted access - author's decisionVirtual design process and validation of products built with metal additive manufacturing technologies with powder methods is not possible without a coupled thermomechanical numerical analysis tool that is capable of ... -
An experimental investigation of the thermal flame structure during side-wall quenching of a laminar premixed flame
(Elsevier, 2024-07-01)
Article
Open AccessThe thermal flame structure (i.e., the temperature distribution in the preheat and reaction zones) is a core element that describes fundamental flame behavior and chemical reactions. This work utilizes a suite of laser ... -
An introduction to parallel in time discretization of transport equations
(Universitat Politècnica de Catalunya, 2021-07)
Master thesis
Restricted access - confidentiality agreement
Covenantee: Barcelona Supercomputing CenterParallel in time integration methods is an interesting field of study, because of its new direction over parallelize. That is, when parallelization in space becomes saturated, the time direction becomes a new way in which ... -
Analysis of CO2 Power Cycle Heat Exchangers
(Universitat Politècnica de Catalunya, 2022-05-18)
Master thesis
Open AccessThe CO2 power cycle has gained attention as an alternative to the classical Rankine and Brayton cycles during this transition to sustainable energy production from the current available methods that have a prime share of ... -
Combined heat and moisture transfer in buildings systems
(2012)
Conference report
Restricted access - publisher's policyTemperature and humidity are the two main parameters indicating the comfort level of the building occupants. Although the effect of temperature is taken into account in thermal simulation of buildings, the moisture transfer ... -
Comparison of a size-dependent model for the latent heat of small tin nanoparticles
(Universitat Politècnica de Catalunya, 2016-07)
Master thesis
Open AccessThe classical formulation for the Stefan problem at the nanoscale does not work because the melting temperature and the effective latent heat decrease with the nanoparticle size. In this work, a model for the effective ... -
Comparison of thermal performance of 3D printer liquefiers through finite element models
(2016)
Conference report
Open AccessOpen source 3D printers have experienced an intense expansion during the last years, mainly because of their accessibility and the vast availability of information thanks to user communities. This fact presents researchers ... -
Computational fluid dynamics modeling of impinging gas-jet systems: I. Assessment of eddy viscosity models
(2005-07-15)
Article
Restricted access - publisher's policyComputational fluid dynamics plays an important role in engineering design. To gain insight into solving problems involving complex industrial flows, such as impinging gas-jet systems (IJS), an evaluation of several eddy ... -
Concentrated solar in a fluidized bed
(Universitat Politècnica de Catalunya, 2017-09)
Master thesis
Open AccessThe aim of this thesis is to create a CFD model of a fluidized bed to study the heat transfer having concentrated solar as a heat source. First, some background about concentrated solar energy, a review of its actual ... -
Convective heat transfer around vertical jet fires: an experimental study
(Elsevier, 2011-12)
Article
Restricted access - publisher's policyThe convection heat transfer phenomenon in vertical jet fires was experimentally analyzed. In these experiments, turbulent propane flames were generated in subsonic as well as sonic regimes. The experimental data demonstrated ... -
Coupling CFD models of airflow with building simulation with an object-oriented and parallel infrastructure
(2012)
Conference report
Restricted access - publisher's policyIntegrating CFD & HT models with the general building program raises the computational time of building simulations as these simulations are usually performed over a period of one year. Within this context, our aim is ... -
Design of microdistillation device
(Universitat Politècnica de Catalunya, 2017-09)
Bachelor thesis
Open Access
Covenantee: Technische Universität DarmstadtDuring the last decades, scientists had been widely attracted for microchemical processing technology, due to its efficient mass and energy transfer as well as the increased safety they provide. Microstructured devices ... -
Detailed analysis of the numerical resolution of the heat transfer and fluid flow governing equations
(Universitat Politècnica de Catalunya, 2019-09-30)
Bachelor thesis
Restricted access - author's decisionPrimerament es proposen a l’estudiant uns casos bàsics d’integració de les equacions bàsiques de conservació de la massa, momentum i energia que li serviran per consolidar els seus coneixements en aquesta important temàtica ... -
Direct numerical simulation of the turbulent natural convection flow in an open cavity of aspect ratio 4
(Begell House, 2012)
Conference report
Open AccessIn this paper, three-dimensional turbulent natural convection heat transfer in an open cavity with an isothermal wall facing the overture has been studied. The aspect ratio chosen for the cavity has been 4 to complement the ... -
DNS and RANS simulations of a coil heat exchanger immersed in a tank
(Begell House, 2023)
Conference lecture
Restricted access - publisher's policyThe operation of heat exchangers in a thermal system can be described by simple heat transfer equations. The heat exchange is normally defined by a global heat transfer coefficient, which takes into account internal and ... -
Effect of wall heat flux on flame temperature profiles during side-wall quenching using advanced diagnostics
(2023)
Conference lecture
Restricted access - publisher's policyFlame-wall interaction (FWI) is a topic of increasing importance within combustion science. The fundamentals of FWI govern fuel efficiency, durability, and pollutant emissions in propulsion and power generation. Significant ... -
Estudi experimental i numèric d'un bescanviador de calor
(Universitat Politècnica de Catalunya, 2017-01-10)
Bachelor thesis
Open AccessEl treball present tracta sobre la realització d'un estudi experimental i numèric del bescanviador de flux creuat que disposa el departament de Mecànica de Fluids de l'EEBE. S'ha dut a terme una primera part experimental ... -
Estudio de fenómenos de transferencia de calor y dinámica de fluidos mediante los métodos de Lattice Boltzmann y volúmenes finitos
(Universitat Politècnica de Catalunya, 2012-09)
Master thesis (pre-Bologna period)
Open AccessEl trabajo se divide en tres partes fundamentales. En la primera parte (capítulo 1) se tratan las ecuaciones que rigen la dinámica de fluidos, que son las de Navier- Stokes. Se presentan las adimensionalizaciones de las ...
