Results 1 to 10 of about 14,454,704 (305)

On the Wake Properties of Segmented Trailing Edge Extensions

open access: yesAerospace, 2018
Changes in the amount and the distribution of mean and turbulent quantities in the free shear layer wake of a 2D National Advisory Committee for Aeronautics (NACA) 0012 airfoil and an AR 4 NACA 0012 wing with passive segmented rigid trailing edge (TE ...
Sidaard Gunasekaran, Daniel Curry
doaj   +1 more source

Identifying Characteristics of Wildfire Towers and Troughs

open access: yesAtmosphere, 2020
Wildfire behavior is dictated by the complex interaction of numerous physical phenomena including dynamic ambient and fire-induced winds, heat transfer, aerodynamic drag on the wind by the fuel and combustion.
Tirtha Banerjee   +4 more
doaj   +1 more source

Lagrangian flow measurements and observations of the 2015 Chilean tsunami in Ventura, CA

open access: yesGeophysical Research Letters, 2016
Tsunami‐induced coastal currents are spectacular examples of nonlinear and chaotic phenomena. Due to their long periods, tsunamis transport substantial energy into coastal waters, and as this energy interacts with the ubiquitous irregularity of ...
Nikos Kalligeris   +6 more
doaj   +1 more source

Coherent Momentum Exchange above and within a Scots Pine Forest

open access: yesAtmosphere, 2016
Biorthogonal decomposition (BOD) is used to detect and study synchronous coherent structures occurring at multiple levels in the vertical momentum flux (u′w′) within and above a planted Scots pine forest during a 12-week continuous measurement period. In
Manuel Mohr, Dirk Schindler
doaj   +1 more source

Derivation and Implementation of a Non‐Local Term to Improve the Oceanic Convection Representation Within the k–ɛ Parameterization

open access: yesJournal of Advances in Modeling Earth Systems
The representation of turbulent fluxes during oceanic convective events is important to capture the evolution of the oceanic mixed layer. To improve the accuracy of turbulent fluxes, we examine the possibility of adding a non‐local component in their ...
Alexandre Legay   +2 more
doaj   +1 more source

Randomness Representation of Turbulence in Canopy Flows Using Kolmogorov Complexity Measures

open access: yesEntropy, 2017
Turbulence is often expressed in terms of either irregular or random fluid flows, without quantification. In this paper, a methodology to evaluate the randomness of the turbulence using measures based on the Kolmogorov complexity (KC) is proposed.
Dragutin Mihailović   +4 more
doaj   +1 more source

Sequential and Parallel Algorithms to Compute Turbulent Coherent Structures

open access: yesMathematics
The behavior of turbulent flows remains a significant unsolved problem in physics. Recently, a large quantity of effort has been directed toward understanding the non-linear interactions of the different flow structures in order to address this challenge.
Sergio Gandía-Barberá   +4 more
doaj   +1 more source

Dynamical systems theory approach in oceanography: a review on achievements, limitations, verification and validation of Lagrangian methods

open access: yesFrontiers in Marine Science
The Lagrangian approach (LA) in ocean modelling relies on a dense set of trajectories of virtual particles that can be computed using velocity fields and on a subsequent analysis of entangled trajectories of particles.
S. V. Prants
doaj   +1 more source

Experience in developing jet noise silencers

open access: yesВестник Самарского университета: Естественнонаучная серия
In this paper, we investigate the acoustic characteristics of subsonic jet streams exposed to high-frequency noise. The main device generating high-frequency sound was a system consisting of peripheral nozzles located around the main (base) nozzle.
Vadim N. Kalabukhov
doaj   +1 more source

Experimental investigation of supersonic flow over elliptic surface

open access: yesOpen Physics, 2013
Zhang Qinghu   +4 more
doaj   +1 more source

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