Publications associées à Turbulence

Experimental and numerical study on wave-impact on buildings

Giovanni De Cesare, Michael Pfister, Davide Wüthrich, Shun Nomura

Unsteady flows such as tsunamis, impulse waves and dam-break waves can lead to damages and human losses. Hence, specific research to limit casualties and reconstruction costs is needed. The complexity of the phenomena involved suggests that a hybrid experi ...

2019

Compliant riblets: Problem formulation and effective macrostructural properties

Giuseppe Antonio Zampogna, Alessandro Bottaro

Small-scale, deformable riblets, embedded within the viscous sublayer of a turbulent boundary layer and capable to adapt to the overlying motion, are studied. The wall micro-grooves are made of a linearly elastic material and can undergo small deformations ...

2019

Mitigating tip vortex cavitation by a flexible trailing thread

Mohamed Farhat, Ali Amini

Tip Vortex Cavitation (TVC) is a major issue in design and operation of axial hydraulic machines. We investigate the capacity of a flexible trailing thread in alleviating TVC by analyzing the flow-induced motion. For this purpose, a nylon thread with three ...

AMER INST PHYSICS2019

Continuously-fed gravity currents propagating over a finite porous substrate

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Sara Venuleo

We present the results of laboratory investigations of continuously-fed density currents that propagate first over a smooth horizontal bed and then over a porous substrate of limited length. Inflow discharge, initial excess density, and substrate porositie ...

2019

Numerical and experimental investigation of shedding mechanisms from leading-edge cavitation

Mohamed Farhat, Ali Amini

Leading-edge cavitation is responsible of the generation of transient cavities, usually made of clouds of bubbles. These transient cavities travel downstream to high-pressure regions and collapse violently, leading to noise and vibration as well as erosion ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Assessment of capillary phenomena in liquid composite molding

Véronique Michaud, Baris Çaglar, Feyza Karasu Kiliç, Cem Tekin

The interplay between capillary and viscous forces plays a significant role for optimal part quality in fiber-reinforced composites manufactured by Liquid Composite Molding (LCM); these are however difficult to analyze during flow. Two approaches are propo ...

2019

The effect of size on the plastic deformation of annealed cast aluminium microwires

Andreas Mortensen, Léa Deillon, Suzanne Godelieve Alphonsine Verheyden

Monocrystalline, cast aluminium microwires of diameter (D) below 25 mu m free of micromilling artefacts are annealed under protective atmosphere. Annealing increases the flow stress of all tested microwires, by an amount that is found, in a Haasen plot of ...

2019

Numerical analysis for detecting head losses in trifurcations of high head in hydropower plants

François Avellan, Ramiro Gustavo Ramirez Camacho

Many different types of branching have been developed, such as bifurcation, trifurcation, and manifolds, among others. These configurations are used in penstocks to transport water from surge tanks to power houses in order to feed several turbines at the s ...

PERGAMON-ELSEVIER SCIENCE LTD2019

Computational fluid dynamics of blood flow in an idealized left human heart

Alfio Quarteroni, Filippo Menghini

We construct an idealized computational model of the left human heart for the study of the blood flow dynamics in the left atrium and ventricle. We solve the Navier-Stokes equations in the ALE formulation and we prescribe the left heart wall displacement b ...

WILEY2019

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Turbulence

Experimental and numerical study on wave-impact on buildings

Efficient numerical representation of the impacts of flexible plant reconfiguration on canopy posture and hydrodynamic drag

Compliant riblets: Problem formulation and effective macrostructural properties

Mitigating tip vortex cavitation by a flexible trailing thread

Continuously-fed gravity currents propagating over a finite porous substrate

Numerical and experimental investigation of shedding mechanisms from leading-edge cavitation

Assessment of capillary phenomena in liquid composite molding

The effect of size on the plastic deformation of annealed cast aluminium microwires

Numerical analysis for detecting head losses in trifurcations of high head in hydropower plants

Computational fluid dynamics of blood flow in an idealized left human heart

Graph Chatbot

Chattez avec Graph Search

Numerical and experimental investigation of shedding mechanisms from leading-edge cavitation

Numerical analysis for detecting head losses in trifurcations of high head in hydropower plants

Mitigating tip vortex cavitation by a flexible trailing thread

Computational fluid dynamics of blood flow in an idealized left human heart

Assessment of capillary phenomena in liquid composite molding

Compliant riblets: Problem formulation and effective macrostructural properties

Experimental and numerical study on wave-impact on buildings

Efficient numerical representation of the impacts of flexible plant reconfiguration on canopy posture and hydrodynamic drag

The effect of size on the plastic deformation of annealed cast aluminium microwires

Continuously-fed gravity currents propagating over a finite porous substrate