Concept

Secondary flow

Publications associées (94)

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Simulation of shear-driven flows

Roland Bouffanais

The research work reported in the present dissertation is aimed at the analysis of complex physical phenomena involving instabilities and nonlinearities occurring in fluids through state-of-the-art numerical modeling. Solutions of intricate fluid physics p ...

EPFL2007

Parallel SOL flow on TCV

Richard Pitts, Jan Horacek, Marco Wischmeier

Particle flow measurements parallel to the total magnetic field direction have been obtained for the first time in the TCV tokamak scrape-off layer. The plasma shape flexibility of TCV, coupled with carefully matched ohmic diverted discharges in forward an ...

2007

Simulation des Grandes Echelles d'écoulements turbulents compressibles dans des conduits

Large Eddy Simulations of three-dimensional turbulent compressible flows in curved duct of rectangular cross-section are presented. Strong secondary flows and turbulent structures are the typical features of this type of flow: these are responsible for mos ...

2005

Simulation des Grandes Echelles d’écoulements turbulents compressibles dans des conduits courbes: étude des transferts thermiques

Large eddy simulations of three-dimensional turbulent compressible flows in curved duct of rectangular crosssection are presented. Strong secondary flows and turbulent structures are the typical features of this type of flow : these are responsible for mos ...

2005

Large Eddy Simulation of turbulent flow in curved ducts: influence of the curvature radius

We present Large-Eddy Simulations (LES) of the turbulent compressible flow in curved ducts of square cross section. The aim is to investigate the influence of the curvature radius Rc on the flow and the heat transfer. We consider three different curvature ...

Kluwer2005

New approximation for free surface flow of groundwater: Capillary correction

David Andrew Barry

An existing capillarity correction for free surface groundwater flow as modelled by the Boussinesq equation is re-investigated. Existing solutions, based on the shallow flow expansion, have considered only the zeroth-order approximation. Here, a second-ord ...

2005

A spectral multidomain penalty method model for the simulation of high Reynolds number localized incompressible stratified turbulence

Jan Sickmann Hesthaven

A spectral multidomain penalty method model has been developed for the simulation of high Reynolds number localized stratified turbulence. This is the first time that a penalty method, with a particular focus on subdomain interface treatment, has been used ...

2005

Physical modelling of leading edge cavitation

Youcef Ait Bouziad

Cavitation is usually the main physical phenomenon behind performance alterations in hydraulic machinery. For this reason, it is crucial to accurately predict its inception and development and to highlight a comprehensive relation between the cavitation de ...

EPFL2005

Large Eddy Simulation of turbulent flow in curved and S-shape ducts

We present Large-Eddy Simulations (LES) of the turbulent compressible flow in a curved and an S-shape duct of square cross section. The aim is to predict the three-dimensional structures which develop inside the cooling channels of heat exchangers and whic ...

KLUWER2003

Flow and turbulence in sharp open-channel bends

Koen Blanckaert

The sustainable development of rivers requires a knowledge on the three-dimensional mean flow field and the turbulence in complex morphologies. In a future, the computational capacity will be sufficient to simulate numerically the fine details of the flow. ...

EPFL2003