Concept

Compressible flow

Related publications (398)

Film stacking impregnation model for a novel net-shape thermoplastic composite preforming process

Véronique Michaud, Martyn Douglas Wakeman, Simon Jespersen

An impregnation model has been developed to evaluate the infiltration phenomena that occur during a novel near net shape preforming method. This process comprises automated deposition of thermoplastic resin and unidirectional (UD) carbon fibres to a pre-pr ...

2008

Axisymmetric swirling flow simulation of the draft tube vortex in Francis turbines at partial discharge

François Avellan

The flow in the draft tube cone of Francis turbines operated at partial discharge is a complex hydrodynamic phenomenon where an incoming steady axisymmetric swirling flow evolves into a three-dimensional unsteady flow field with precessing helical vortex ( ...

International Association For Hydraulic Research2008

Effective velocity for transport in heterogeneous compressible flows with mean drift

Assyr Abdulle

Solving transport equations in heterogeneous flows might give rise to scale dependent transport behavior with effective large scale transport parameters differing from those found on smaller scales. For incompressible velocity fields, homogenization method ...

2008

Simulation Experiments with Bio-Inspired Algorithms for Odor Source Localization in Laminar Wind Flow

Alcherio Martinoli, Thomas Lochmatter

We compare three bio-inspired odor source localization algorithm (casting, surge-spiral and surge-cast) for environments with a main wind flow in simulation. The wind flow is laminar and the simulation setup similar to the setup in the wind tunnel in which ...

IEEE2008

Computer simulation and theory of the diffusion-and flow-induced concentration dispersion in microfluidic devices and HPLC systems based on rectangular microchannels

Nico de Rooij, Peter Van der Wal

The dynamics of formation of solute peaks in microfluidic systems are investigated by computer simulation. A finite-element numerical procedure is applied to analyze the diffusion- and flow-controlled concentration dispersion in a 40 μm-high rectangular fl ...

2008

Aerated flows on stepped chutes with macro-roughness elements - Part I: Hydraulic characteristics

Anton Schleiss, Stéphanie Joëlle André

Uncontrolled overtopping during flood events can endanger embankment dams. Erosion of the downstream slope and scouring of its toe due to the high energy of the overflow can lead to breach formation and complete failure. Solution to overcome these dangerou ...

2008

Proceedings of EVA-TREN’s 1st Experts’ Workshop on Transport and Energy Infrastructure Appraisal in Europe : Theoretical Basis in Perspective

Tristan Chevroulet

The European Union needs harmonised guidelines to improve the appraisal of large-scale infrastructure dedicated to the Trans-European Networks (TEN); in order to contribute to such guidelines, EU-funded EVA-TREN analyses ex-ante studies and projects outcom ...

2008

Effects of high-speed airflows on a surface dielectric barrier discharge

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Samantha Pavon

A detailed study of the interaction between high-speed gas flows and surface dielectric barrier discharges (DBD) is presented. In the present paper, it is demonstrated that a DBD can be sustained in transonic airflows, up to isentropic Mach numbers of 1.1. ...

2007

Influence of macro-roughness of walls on steady and unsteady flow in a channel

Tobias Meile

High-head storage hydropower plants mainly operate their turbines during periods of high energy demand. The sudden starting and stopping of turbines (hydropeaking) lead to highly unsteady flow in channels and rivers. Besides hydropeaking, other anthropogen ...

EPFL2007

Flow pattern based two-phase frictional pressure drop model for horizontal tubes. Part I: Diabatic and adiabatic experimental study

John Richard Thome, Jesus Moreno Quiben

The reliable prediction of pressure drop in two-phase flow is an important prerequisite to accurate optimization of thermal systems. Because of the complexity of these types of flow, empirical or semiempirical relationships are only of limited reliability ...

2007

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