Stability and dynamic characteristics of the nonlinear coupling system of hydropower station and power grid

X Lai, C Li, W Guo, Y Xu, Y Li - Communications in Nonlinear Science and …, 2019 - Elsevier
This paper aims to study the stability and dynamic characteristics of the nonlinear hydro-
turbine governing system (HTGS)–power grid (PG) coupling system. Firstly, for the coupling …

Gravity-driven flow of Herschel–Bulkley fluid in a fracture and in a 2D porous medium

V Di Federico, S Longo, SE King… - Journal of Fluid …, 2017 - cambridge.org
New analytical models are introduced to describe the motion of a Herschel–Bulkley fluid
slumping under gravity in a narrow fracture and in a porous medium. A useful self-similar …

Numerical study of sediment erosion analysis in Francis turbine

M Rakibuzzaman, HH Kim, K Kim, SH Suh, KY Kim - Sustainability, 2019 - mdpi.com
Effective hydraulic turbine design prevents sediment and cavitation erosion from impacting
the performance and reliability of the machine. Using computational fluid dynamics (CFD) …

Displacement flow of yield stress materials in annular spaces of variable cross section

PJT Espinoza, PR Varges, EC Rodrigues… - Journal of Petroleum …, 2022 - Elsevier
We conducted an experimental study of a yield stress material being displaced upwardly at
controlled flow rate by a Newtonian fluid in an annular space whose external wall consists of …

Numerical simulation of mud-flows impacting structures

M Greco, C Di Cristo, M Iervolino, A Vacca - Journal of Mountain Science, 2019 - Springer
The study of the interaction of mud-flows with obstacles is important to define inundation
zones in urban areas and to design the possible structural countermeasures. The paper …

[HTML][HTML] Identification of rheological parameters of Herschel–Bulkley fluids from free surface data

F Mohebbi, M Sellier - International Journal of Thermofluids, 2022 - Elsevier
An inverse analysis for simultaneous identification of three rheological parameters of non-
Newtonian Herschel-Bulkley fluids from free surface data is presented. The three …

Combined effect of rheology and confining boundaries on spreading of gravity currents in porous media

S Longo, V Ciriello, L Chiapponi… - Advances in water …, 2015 - Elsevier
One-dimensional flows of gravity currents within horizontal and inclined porous channels
are investigated combining theoretical and experimental analysis to evaluate the joint effects …

MHD PERISTALTIC FLOW OF A WALTER'SB FLUID WITH MILD STENOSIS THROUGH A POROUS MEDIUM IN AN ENDOSCOPE

NTM El-dabe, DR Mostapha - Journal of Porous Media, 2019 - dl.begellhouse.com
In this work, the effects of partial slip and the magnetic field on peristaltic flow of an
electrically conducting Walter's B fluid through a porous medium are discussed. The …

Numerical simulation of Williamson combined natural and forced convective fluid flow between parallel vertical walls with slip effects and radiative heat transfer in a …

MY Abdollahzadeh Jamalabadi, P Hooshmand… - Entropy, 2016 - mdpi.com
Numerical study of the slip effects and radiative heat transfer on a steady state fully
developed Williamson flow of an incompressible Newtonian fluid; between parallel vertical …

Converging gravity currents of power-law fluid

S Longo, L Chiapponi, D Petrolo, A Lenci… - Journal of Fluid …, 2021 - cambridge.org
We study non-Newtonian effects associated with power-law rheology of behaviour index is
modest. The theoretical formulation is validated through experiments conducted during both …