Results 1 to 10 of about 138,087 (194)
Coherent Structure of Flow Based on Denoised Signals in T-junction Ducts with Vertical Blades [PDF]
Entropy, 2019 The skin friction consumes some of the energy when a train is running, and the coherent structure plays an important role in the skin friction. In this paper, we focus on the coherent structure generated near the vent of a train.
Jing He, Xiaoyu Wang, Mei Lin
doaj +2 more sources
Journal of Fluid Science and Technology, 2023 This study identifies the coherent structure and determines its energy contribution in the upstream near-wake behind a long circular cylinder using proper orthogonal decomposition of data that is measured using particle image velocimetry.
Chia-Chun CHU, Keh-Chin CHANG
doaj +3 more sources
Drag Reduction Characteristics of Bionic Structure Composed of Grooves and Mucous Membrane Acting on Turbulent Boundary Layer [PDF]
Journal of Applied Fluid Mechanics, 2022 The biological surface structure comprising fish scales and a mucous membrane exhibits good turbulent drag reduction ability. Based on this structure, a bionic frictional drag reduction model composed of a grooved structure and mucous membrane was ...
K. Zhang +4 more
doaj +1 more source
Coherent Streamwise Vortex Structure of a Three-Dimensional Wall Jet
Fluids, 2021 The dynamics of the coherent structures in a turbulent three-dimensional wall jet with an exit Reynolds number of 250,000 were investigated using the Snapshot Proper Orthogonal Decomposition (POD).
Lhendup Namgyal, Joseph W. Hall
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2022 The relaminarization process of a turbulent boundary layer under a sink flow was investigated experimentally. The boundary layer was accelerated because of the contraction of the flow area. The mean and fluctuating velocity components were measured using
Masashi ICHIMIYA +2 more
doaj +1 more source
Investigation of Isothermal Flow inside a New Combustor with Two-Stage Axial Swirler [PDF]
Journal of Applied Fluid Mechanics, 2022 Experiments and numerical simulations are performed to study the cold flow field characteristics in a two-stage axial swirl combustion chamber. Large eddy simulation with dynamic turbulent kinetic energy sub-grid scale model is used to calculate the flow
P. Wang +4 more
doaj +1 more source
Objective Eulerian coherent structures [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2016 We define objective Eulerian Coherent Structures (OECSs) in two-dimensional, non-autonomous dynamical systems as the instantaneously most influential material curves. Specifically, OECSs are stationary curves of the averaged instantaneous material stretching-rate or material shearing-rate functionals.
Mattia Serra, George Haller
openaire +4 more sources
Transition to Equilibrium and Coherent Structure in Ideal MHD Turbulence, Part 2
Fluids, 2023 We continue our study of the transition of ideal, homogeneous, incompressible, magnetohydrodynamic (MHD) turbulence from non-equilibrium initial conditions to equilibrium using long-time numerical simulations on a 1283 periodic grid.
John V. Shebalin
doaj +1 more source
Structural insight into host plasma membrane association and assembly of HIV-1 matrix protein
Scientific Reports, 2021 Oligomerization of Pr55Gag is a critical step of the late stage of the HIV life cycle. It has been known that the binding of IP6, an abundant endogenous cyclitol molecule at the MA domain, has been linked to the oligomerization of Pr55Gag.
Halilibrahim Ciftci +26 more
doaj +1 more source
Frontiers in Physics, 2020 Turbulent density fluctuations are investigated in the solar wind at sub-ion scales using calibrated spacecraft potential. The measurement technique using the spacecraft potential allows for a much higher time resolution and sensitivity when compared to ...
Owen Wyn Roberts +6 more
doaj +1 more source