Results 21 to 30 of about 138,186 (293)

Influence of coherent structure on turbulence characteristics of 0814 strong typhoon Hagupit

Shenzhen Daxue xuebao. Ligong ban, 2022
In order to explore the formation mechanism of the nonstationary wind speed in the eye wall regions and eye region of a typhoon, taking the measured data of No.0814 strong typhoon Hagupit as the research object, we identify and extract the coherent ...
LI Lixiao, HUANG Yuqing, CHEN Shangxin, HUANG Xigui, XIAO Yiqing, CHEN Xianchuan   +5 more
doaj   +1 more source

Coherent Structures of a Turbulent Flow Bounded by a Compact Permeable Wall

Fluids, 2022
In order to optimize the use of compact porous media as flow and heat transfer devices, it is imperative to understand those coherent structures of the associated flow that generate and sustain turbulence. Given the deficiency of data regarding this area
James K. Arthur
doaj   +1 more source

Structured interference optical coherence tomography [PDF]

Optics Letters, 2012
We developed a structured interference optical coherence tomography (SIOCT) to enhance the lateral resolution beyond the diffraction limit. A sinusoidal pattern is created on the interferometric beam with the reference intensity temporally modulated.
Ji, Yi, Qing, Wei, Hao F, Zhang, Vadim, Backman   +3 more
openaire   +2 more sources

The Compression of the Heliospheric Magnetic Structure by Interplanetary Shocks: Is the Structure at 1AU a Manifestation of Solar-Wind Turbulence or Is It Fossil Structure From the Sun?

Frontiers in Astronomy and Space Sciences, 2020
As a test of the action of MHD turbulence in the solar wind, the compression of the heliospheric magnetic structure at 1AU by 109 interplanetary shocks is examined.
Joseph E. Borovsky
doaj   +1 more source

Comparison of compressible and incompressible numerical methods in simulation of a cavitating jet through a poppet valve

Engineering Applications of Computational Fluid Mechanics, 2019
The regime of compressible flow generally refers to the super/subsonic case. However, several remarkable cases with low Mach number could not be appropriately described with the incompressible method.
Cong Yuan, Jinchun Song, Minghe Liu
doaj   +1 more source

The Study of Turbulent Fluctuation Characteristics in a Small Rotary Engine with a Peripheral Port Based on the Improved Delayed Detached Eddy Simulation Shear-Stress Transport (IDDES-SST) Method

Energies, 2018
In this paper, an improved delayed detached eddy simulation method combined with shear-stress transport (SST) model was used to study the three-dimensional turbulent characteristics in a small rotary engine with a peripheral port.
Yan Zhang, Jinxiang Liu, Zhengxing Zuo
doaj   +1 more source

Coherent structure colouring: identification of coherent structures from sparse data using graph theory [PDF]

Journal of Fluid Mechanics, 2016
We present a frame-invariant method for detecting coherent structures from Lagrangian flow trajectories that can be sparse in number, as is the case in many fluid mechanics applications of practical interest. The method, based on principles used in graph colouring and spectral graph drawing algorithms, examines a measure of the kinematic dissimilarity ...
Schlueter-Kuck, Kristy L., Dabiri, John O.   +1 more
openaire   +3 more sources

Influence of Reynolds number on coherent structure, flow transition, and evolution of the plane jet

Journal of Fluid Science and Technology, 2014
In the present study, the flow characteristics of a spatially evolving plane jet are investigated, focusing on the dynamics of coherent structure (CS), flow transition, and evolution.
Nannan WU, Yasuhiko SAKAI, Kouji NAGATA, Yasumasa ITO, Osamu TERASHIMA, Toshiyuki HAYASE   +5 more
doaj   +1 more source

On a Novel Methodology for South Atlantic Convergence Zone Events Classification Using a Multimodal Convolutional Neural Network

IEEE Access
The precipitation in the Southwest and Midwest regions of Brazil is strongly influenced by the South Atlantic Convergence Zone (SACZ). However, predicting and detecting this phenomenon is a difficult task.
Jean Schmith, Paul John Harris, Bardo Ernst Josef Bodmann   +2 more
doaj   +1 more source

Structural analysis of dynamic-controlled jet using DNS

Journal of Fluid Science and Technology, 2014
In order to develop a new mixing procedure, we conduct DNS (direct numerical simulation) of dynamic controlled free jets. As the dynamic control, it is assumed that the inflow of jet rotates around the streamwise axis.
Koichi TSUJIMOTO, Noritaka SHIBATA, Toshihiko SHAKOUCHI, Toshitake ANDO   +3 more
doaj   +1 more source