Results 11 to 20 of about 9,758,243 (289)

Numerical Simulation of a Marine Current Turbine in Turbulent Flow [PDF]

open access: yes, 2014
The copyright of this thesis rests with the author and no quotation from it or information derived from it may be published without the prior written consent of the authorThe marine current turbine (MCT) is an exciting proposition for the extraction of ...
Xin, Bai
core   +4 more sources

Modelling of turbulent swirling flows [PDF]

open access: yes, 2004
This thesis investigates the predictability of non-reacting and reacting anistropic turbulent, swirling flows using popular turbulence models with a robust numrical procedure. The performance of these turbulence models is assessed and compared against
Jones, Lee Nicholas
core   +7 more sources

Parametric forcing approach to rough-wall turbulent channel flow [PDF]

open access: yes, 2012
The effects of rough surfaces on turbulent channel flow are modelled by an extra force term in the Navier–Stokes equations. This force term contains two parameters, related to the density and the height of the roughness elements, and a shape function ...
Busse, Angela   +3 more
core   +2 more sources

Numerical analysis of flow structures and bed entrainment in turbulent open-channel flow [PDF]

open access: yes, 2009
PhDThe results from a Direct Numerical Simulation (DNS) and a Large Eddy Simulation (LES) are employed to study the large-scale coherent structures and bed entrainment in the turbulent open-channel flow.
Ma, Jianmin
core   +4 more sources

Transitions of turbulent superstructures in generalized Kolmogorov flow

open access: yesPhysical Review Research, 2021
Self-organized large-scale flow structures occur in a wide range of turbulent flows. Yet, their emergence, dynamics, and interplay with small-scale turbulence are not well understood.
Cristian C. Lalescu, Michael Wilczek
doaj   +1 more source

Effects of polymer addition on transition and length scales of flow structures in transitional channel flow

open access: yesJournal of Fluid Science and Technology, 2023
The effect of polymer addition on transition to turbulence in a two-dimensional water-flow channel was experimentally investigated by flow visualization using reflective flakes.
Sattaya YIMPRASERT   +3 more
doaj   +1 more source

Simulation of rough wall turbulent channel flow using a parametric forcing approach [PDF]

open access: yes, 2011
The effects of rough walls on turbulent channel flow are simulated by adding a simple forcing term to the Navier-Stokes equations. An extensive parameter study is used to explore the effects of this term on turbulent channel flow.
Busse, A., Busse, A.E., Sandham, N.D.
core   +1 more source

A Delayed Detached Eddy Simulation Model for the Simulation of Complex Turbulent Flow [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
A new turbulent model based on Delayed Detached Eddy Simulation (DDES) with non-linear eddy viscosity model (NLEVM) was developed to predict the complex turbulent flow.
L. J. Zhai, H. X. Chen, Z. Ma
doaj   +1 more source

An investigation into the structure of a turbulent plane jet. [PDF]

open access: yes, 1963
PhDAn experimental investigation into the structure of the plane jet in a moving airstream has been made. The majority of the measurements have been made in a jet exhausting into a slow moving airstream providing an example of a possible self ...
Bradbury, L. J. S
core   +4 more sources

Structure of turbulent flow over regular arrays of cubical roughness. [PDF]

open access: yes, 2007
The structure of turbulent flow over large roughness consisting of regular arrays of cubical obstacles is investigated numerically under constant pressure gradient conditions.
Thomas, T.G.   +5 more
core   +1 more source

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