Publications related to Coandă effect

Hydraulic performance of stepped spillway aerators and related downstream flow features

To protect spillways against cavitation damage, adding a small air concentration to the flow close to the invert is efficient. Aerator performance on smooth chutes was therefore well studied in terms of air entrainment and downstream air concentration deve ...

EPFL2016

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

François Gallaire, Edouard Boujo, Andrea Fani

The question of optimal spanwise-periodic modification for the stabilisation of spanwise-invariant flows is addressed. A second-order sensitivity analysis is conducted for the linear temporal stability of parallel flows U-0 subject to small-amplitude spanw ...

Cambridge University Press2015

Air Entrainment in Skimming Flow on Stepped Spillways: the Effect of an Abrupt Slope Change

Anton Schleiss, Michael Pfister, José Pedro Gamito de Saldanha Calado Matos, Mohammad Javad Ostad Mirza

Numerous stepped spillways were built during the last decades. In particular, a stepped spillway may be integrated economically into the downstream face of a RCC gravity dam, or on valley flanks besides embankment or rockfill dams, where slope changes may ...

2015

Study of snow-atmosphere interactions over an Antarctic surface using large eddy simulations coupled with a Lagrangian stochastic model

Michael Lehning, Marc Parlange, Katherine Colby Leonard, Francesco Comola, Ernesto Trujillo Gomez, Marco Giovanni Giometto

The need for a better understanding of fluid and morphodynamic processes over Antarctic sea ice motivates the development of detailed models of small-scale snow-atmosphere interactions. At large scales, these interactions drive spatial patterns of snow dis ...

2015

Modelling Small-Scale Drifting Snow with a Lagrangian Stochastic Model Based on Large-Eddy Simulations

Michael Lehning, Marc Parlange, Marc Diebold, Jan Overney, Gian-Duri Lieberherr

Observations of drifting snow on small scales have shown that, in spite of nearly steady winds, the snow mass flux can strongly fluctuate in time and space. Most drifting snow models, however, are not able to describe drifting snow accurately over short ti ...

Springer Verlag2014

A Comparative Study of the Local Heat Transfer Distributions Around Various Surface Mounted Obstacles

Peter Ott, Alexandros Terzis, Dirk Ullmer, Robert Wyssmann

In many engineering applications, heat transfer enhancement techniques are of vital importance in order to ensure reliable thermal designs of convective heat transfer applications. This study examines experimentally the heat transfer characteristics on the ...

Science Press2014

Open-loop control of a separated boundary layer

François Gallaire, Edouard Boujo

Linear optimal gains

G_{opt}(\omega)

are computed for the separated boundary-layer flow past a two-dimensional bump in the subcritical regime. Very large values are found, making it possible for small-amplitude noise to be strongly amplified and to desta ...

Elsevier France-Editions Scientifiques Medicales Elsevier2014

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Open-loop control of a separated boundary layer

François Gallaire, Edouard Boujo

Linear optimal gains

G_{opt}(\omega)

Elsevier France-Editions Scientifiques Medicales Elsevier2014

Coandă effect

Hydraulic performance of stepped spillway aerators and related downstream flow features

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

Air Entrainment in Skimming Flow on Stepped Spillways: the Effect of an Abrupt Slope Change

Ringin' the water bell: dynamic modes of curved fluid sheets

Study of snow-atmosphere interactions over an Antarctic surface using large eddy simulations coupled with a Lagrangian stochastic model

Flow separation at convex banks in open channels

Detecting Vortex Burst on a Rotating Low-Aspect Ratio Plate

Modelling Small-Scale Drifting Snow with a Lagrangian Stochastic Model Based on Large-Eddy Simulations

A Comparative Study of the Local Heat Transfer Distributions Around Various Surface Mounted Obstacles

Open-loop control of a separated boundary layer

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Flow separation at convex banks in open channels

Hydraulic performance of stepped spillway aerators and related downstream flow features

Ringin' the water bell: dynamic modes of curved fluid sheets

Modelling Small-Scale Drifting Snow with a Lagrangian Stochastic Model Based on Large-Eddy Simulations

Detecting Vortex Burst on a Rotating Low-Aspect Ratio Plate

A Comparative Study of the Local Heat Transfer Distributions Around Various Surface Mounted Obstacles

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

Air Entrainment in Skimming Flow on Stepped Spillways: the Effect of an Abrupt Slope Change

Study of snow-atmosphere interactions over an Antarctic surface using large eddy simulations coupled with a Lagrangian stochastic model

Open-loop control of a separated boundary layer