Results 11 to 20 of about 1,146 (113)

Study of Transition to Turbulence in a Supersonic Boundary Layer Using DNS and Transition Prediction

open access: yesJournal of Fluid Science and Technology, 2007
The current understanding of supersonic boundary layer transition is reviewed in this paper. The material focuses on bypass transition in a plane supersonic boundary layer. Recent advances in DNS and engineering prediction of transition are discussed. It
Hiroshi MAEKAWA
doaj   +1 more source

An Extended Version of an Algebraic Intermittency Model for Prediction of Separation-Induced Transition at Elevated Free-Stream Turbulence Level

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2020
An algebraic intermittency model for boundary layer flow transition from laminar to turbulent state, is extended using an experimental data base on boundary layer flows with various transition types and results by large eddy simulation of transition in a
Slawomir Kubacki   +3 more
doaj   +1 more source

Transition to turbulence in suspension Taylor-Couette flow [PDF]

open access: yesEPJ Web of Conferences
The pattern transition routes to turbulence are explored via experiments in a Taylor-Couette setup for neutrally-buoyant suspensions of non-colloidal particles in the counter-rotation regime.
Alam Meheboob, Ghosh Manojit
doaj   +1 more source

Flow Statistics in the Transitional Regime of Plane Channel Flow

open access: yesEntropy, 2020
The transitional regime of plane channel flow is investigated above the transitional point below which turbulence is not sustained, using direct numerical simulation in large domains.
Pavan V. Kashyap   +2 more
doaj   +1 more source

Improved Turbulence Prediction in Turbomachinery Flows and the Effect on Three-Dimensional Boundary Layer Transition

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2018
For the numerical prediction of turbomachinery flows, a two-equation turbulence model in combination with a proper transition model to account for laminar boundary layers and their transition to turbulence is state of the art.
Christoph Bode   +3 more
doaj   +1 more source

Effect of turbulence intensity and gradient of turbulence intensity on airfoil aerodynamic characteristics at low Reynolds number

open access: yesXibei Gongye Daxue Xuebao, 2021
Based on the complex flow field of vertical takeoff and landing (VTOL) aircraft with distributed propulsion, the influence of the turbulence intensity and gradient of turbulence intensity on the aerodynamic characteristics of two-dimensional airfoil ...

doaj   +1 more source

Direct Numerical Simulations of the Pulsating Flow over a Plane Wall

open access: yesJournal of Marine Science and Engineering, 2020
The results of direct numerical simulations of the flow generated in a plane duct by a pressure gradient which is the sum of two terms are described.
Giovanna Vittori   +2 more
doaj   +1 more source

Turbulence vertical structure of the boundary layer during the afternoon transition [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
We investigate the decay of planetary boundary layer (PBL) turbulence in the afternoon, from the time the surface buoyancy flux starts to decrease until sunset.
C. Darbieu   +10 more
doaj   +1 more source

Laminar Turbulent Transition in a Boundary Layer Subjected to Weak Free Stream Turbulence

open access: yesJournal of Fluid Science and Technology, 2008
For revealing the transition process in a flat plate boundary layer subjected to a weak free stream turbulence, flow visualization and hot-wire measurements were performed. A weak free stream turbulence was generated by a turbulence grid mounted upstream
Toshiaki KENCHI   +2 more
doaj   +1 more source

Effect of Different Subgrid-Scale Models and Inflow Turbulence Conditions on the Boundary Layer Transition in a Transonic Linear Turbine Cascade

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2021
The aim of this work is to study the influence of different subgrid-scale (SGS) closure models and inflow turbulence conditions on the boundary layer transition on the suction side of a highly loaded transonic turbine cascade in the presence of high free-
Ettore Bertolini   +2 more
doaj   +1 more source

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