Browsing CFD Modelling and Simulation by Title
Now showing items 10-29 of 50
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Efficient Rotating Frame Simulation in Turbomachinery
(2014-12-31)This paper deals with the simulation of steady flows in tur- bomachinery. Two approaches are proposed, the first one is the classical multiple-rotating frame method (MRF) by multi- zone approach where the different zones ... -
Experimental investigation of anomalous molecular probe diffusion in entangled polymer melts
Nieto, D.
; Ramakrishnan, V.; Smoukov, S. K.; Venerus, D. C. (2022-01-01)
Investigations on the diffusion of small molecules or particles in polymeric materials are important to numerous technologies and can also be used to gain insight on polymer chain dynamics. Systems where the probe size is ... -
Frequency domain modelling of a coupled system of floating structure and mooring Lines: An application to a wave energy converter
Touzon, I.; Nava, V.; Gao, Z.; Petuya, V. (2021-01-15)
Floating structures for single offshore renewable energy devices, i.e. wave energy converters, tend to be significantly smaller than those of the traditional offshore industry and the interaction between floater motions ... -
Group-level progressive alterations in brain connectivity patterns revealed by diffusion-tensor brain networks across severity stages in Alzheimer's disease
Rasero, J.; Alonso-Montes, C.; Diez, I.; Olabarrieta-Landa, L.; Remaki, L.; Escudero, I.; Mateos, B.; Bonifazi, P.; Fernandez, M.; Arango-Lasprilla; Stramaglia, S.; Cortes, J.M. (2017-07-01)
Alzheimer’s disease (AD) is a chronically progressive neurodegenerative disease highly correlated to aging. Whether AD originates by targeting a localized brain area and propagates to the rest of the brain across ... -
High order discontinuous finite-volume/finite-element method for CFD applications
(2014-12-31)The proposed method naturally merges the desirable conservative properties and intuitive physical formulation of the widely used finite-volume (FV) technique, with the capability of local arbitrary high-order accuracy and ... -
High-order mixed weighted compact and non-compact scheme for shock and small length scale interaction
(2013-12-31)It is critical for a numerical scheme to obtain numerical results as accurate as possible with limited computational resources. Turbulent processes are very sensitive to numerical dissipation, which may dissipate the small ... -
Hydrodynamic identification of NAUTILUS FOWT platform from small scale tests
Galván, J.; Sánchez-Lara, M.; Garrido-Mendoza, C.; Pérez-Morán, G.; Boulluec, M.L.; Augier, B.; Rodriguez-Arias, R.; Nava, V. (2019)
A small-scale tank test campaign of the NAUTILUS offshore wind floating semisub-mersible platform was held at the Ifremer Deep Water Basin within the framework of the MaRINET 2 project. The support structure consists in ... -
Hydrodynamics of spike proteins dictate a transport-affinity competition for SARS-CoV-2 and other enveloped viruses
Moreno, N.; Moreno-Chaparro, D.; Balboa, F.; Ellero, M. (2022-12-01)
Many viruses, such as SARS-CoV-2 or Influenza, possess envelopes decorated with surface proteins (a.k.a. spikes). Depending on the virus type, a large variability is present in the surface-proteins number, morphology and ... -
Identification of defects originated during the filling of cast pieces through particles modelling
(2014-12-31)In casting processes, strong recirculation zones may trap air, gases and strip particles of sand off the mold affecting seriously the quality of the cast pieces. Especially during the filling of molten pieces with large ... -
Lagged and instantaneous dynamical influences related to brain structural connectivity
Alonso, C.; Diez, I.; Remaki, L.; Escudero, I.; Mateos, B.; Rosseel, Y.; Marinazzo, D.; Stramaglia, S.; Cortes, J.M. (2015-12-31)
Contemporary neuroimaging methods can shed light on the basis of human neural and cognitive specializations, with important implications for neuroscience and medicine. Indeed, different MRI acquisitions provide different ... -
Layout Optimisation of Wave Energy Converter Arrays
Mercadé Ruiz, P.; Nava, V.; Topper, M.B.R.; Ruiz Minguela, P.; Ferri, F.; Kofoed, J.P. (2017-08-24)
This paper proposes an optimisation strategy for the layout design of wave energy converter (WEC) arrays. Optimal layouts are sought so as to maximise the absorbed power given a minimum q-factor, the minimum distance between ... -
Limited Visual Range in the Social Force Model: Effects on Macroscopic and Microscopic Dynamics
García, A.; Hernández-Delfin, D.; Lee, D.-J.; Ellero, M. (2023-01-15)
The Social Force Model has been widely used to simulate pedestrian dynamics. Its simplicity and ability to reproduce some collective patterns of behavior make it an adequate tool in the field of pedestrian dynamics. However, ... -
Mesoscopic modelling and simulation of espresso coffee extraction
Ellero, M.; Navarini, L. (2019)
A mesoscopic model for the simulation of espresso extraction based on the Smoothed Particle Hydrodynamics method is presented. The model incorporates some essential features such as bimodal granulometry (fines-coarses) of ... -
Mesoscopic simulations of inertial drag enhancement and polymer migration in viscoelastic solutions flowing around a confined array of cylinders
Nieto, D.; Ellero, M. (2022-07-01)
We study the flow around a periodic array of cylinders using a mesoscopic viscoelastic fluid that mimics polymeric solutions. We model our fluid employing a novel mesoscopic method based on Smoothed Dissipative Particle ... -
Metallic microswimmers driven up the wall by gravity
Brosseau, Quentin; Balboa, F.; Lushi, Enkeleida; Wu, Yang; Ristroph, Leif; Ward, Michael D.; Shelley, Michael J.; Zhang, Jun (2021-07-21)
Experiments on autophoretic bimetallic nanorods propelling within a fuel of hydrogen peroxide show that tail-heavy swimmers preferentially orient upwards and ascend along inclined planes. We show that such gravitaxis is ... -
Modeling swelling effects during coffee extraction with smoothed particle hydrodynamics
Mo, C.; Navarini, F.; Ellero, M.; Liverani, F.S. (2022-04-01)
It is commonly assumed that coffee particles swell during filtration, but it has not been clarified how different degrees of swelling affect the extraction. In this article, we propose a grain swelling model to investigate ... -
Modeling the effect of flow-induced mechanical erosion during coffee filtration
Chaojie, M.; Johnston, R.; Navarini, L.; Ellero, M. (2021-09)
The espresso extraction process involves a complex transport inside a geometry-changing porous medium. Large solid grains forming the majority of the porous medium can migrate, swell, consolidate and they can also ... -
Molecular Dynamics Test of the Stress-Thermal Rule in Polyethylene and Polystyrene Entangled Melts
Nieto, D.; Sgouros, A.P.; Vogiatzis, G.G.; Tzoumanekas, C.; Georgilas, V.; Verbeeten, W.M.H.; Theodorou, D.N. (2020-02-03)
Anisotropic thermal transport induced by deformation and the linear relation between the thermal conductivity and stress tensors, also known as the stress-thermal rule (STR), are tested via molecular dynamics simulations ... -
Mooring system monitoring of offshore renewable energy floating platforms
Touzon, I.; Garcia-Corcuera, A.; Nava, V.; Rodriguez-Arias, R.; de Miguel, B. (2019)
An appropriate schedule of the operations for the maintenance (both long and short term) of offshore renewable energy devices can be a crucial key factor for assessing the economic viability of marine energy projects. ... -
Motile dislocations knead odd crystals into whorls
Bililign, E. S.; Balboa, F.; Ganan, Y. A.; Poncet, A.; Soni, V.; Magkiriadou, S.; Shelley, M.J.; Bartolo, D.; Irvine, W.T.M. (2021-01-01)
The competition between thermal fluctuations and potential forces governs the stability of matter in equilibrium, in particular the proliferation and annihilation of topological defects. However, driving matter out of ...