Results 21 to 30 of about 56,251 (190)

Mechanism of heat transportation in the intermediate wake of a heated cylinder

open access: yesNihon Kikai Gakkai ronbunshu, 2020
The paper clarifies the effects of buoyancy on the mechanism of heat transfer in the wake of heated cylinder for X/D=5-40. Measurements are made by a thermo-anemometer.
Hideaki WATANABE   +2 more
doaj   +1 more source

Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study

open access: yesAdvances in Mathematical Physics, 2015
This study investigates the anisotropic characteristics of turbulent energy dissipation rate in a rotating jet flow via direct numerical simulation. The turbulent energy dissipation tensor, including its eigenvalues in the swirling flows with different ...
Xingtuan Yang   +5 more
doaj   +1 more source

Flow Behavior in Side-View Plane of Pitching Delta Wing [PDF]

open access: yesEPJ Web of Conferences, 2018
In the present investigation, a delta wing which has 70° sweep angle, Λ was oscillated on its midcord according to the equation of α(t)=αm+α0sin(ωet). This study focused on understanding the effect of pitching and characterizing the interaction of vortex
Pektas Mehmet Can   +4 more
doaj   +2 more sources

Analysis of macroscopic and microscopic rotating motions in rotating jets: A direct numerical simulation

open access: yesAdvances in Mechanical Engineering, 2015
A direct numerical simulation study of the characteristics of macroscopic and microscopic rotating motions in swirling jets confined in a rectangular flow domain is carried out.
Xingtuan Yang   +4 more
doaj   +1 more source

Understanding of tip clearance flow structure in high speed mixed flow compressor

open access: yesPropulsion and Power Research, 2023
This paper addresses the necessity to make a physical interpretation of a highly complex three-dimensional tip clearance flow field study for high-speed mixed-flow compressor having stage exit static pressure to inlet total pressure ratio of 3.8 with 39 ...
Hemant Kumar, Chetan S. Mistry
doaj   +1 more source

Testing Basic Gradient Turbulent Transport Models for Swirl Burners Using PIV and PLIF

open access: yesFluids, 2021
The present paper reports on the combined stereoscopic particle image velocimetry (PIV) and planar laser induced fluorescence (PLIF) measurements of turbulent transport for model swirl burners without combustion.
Alexey Savitskii   +3 more
doaj   +1 more source

Mass transport using the series of vortex rings with swirl

open access: yesJournal of Fluid Science and Technology, 2014
Behavior of the series of laminar vortex rings with circumferential flow, so-called swirl, were investigated using flow visualization, to evaluate the transport efficiency of the ejected fluid as vortex rings.
Takashi NAITOH   +2 more
doaj   +1 more source

Improved Simulation of the Antarctic Stratospheric Final Warming by Modifying the Orographic Gravity Wave Parameterization in the Beijing Climate Center Atmospheric General Circulation Model

open access: yesAtmosphere, 2020
The Antarctic stratospheric final warming (SFW) is usually simulated with a substantial delay in climate models, and the corresponding temperatures in austral spring are lower than observations, implying insufficient stratospheric wave drag.
Yixiong Lu   +4 more
doaj   +1 more source

Simplified model for helical vortex dynamics in the wake of an asymmetric rotor

open access: yesFlow, 2023
Helical vortex systems, such as those found in the wakes of wind turbines, helicopter rotors and propellers, are subject to instabilities that lead to pairing between adjacent vortex loops.
Aliza Abraham   +2 more
doaj   +1 more source

Large-eddy simulation and mathematical model of vortex breakdown and pressure drop in a cavity with tubeless vortex reducer

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The tubeless vortex reducer was used to reduce the pressure drop in a cavity with radial inflow. In previous studies, the mechanism of vortex breakdown in tubeless vortex reducers was not clear, and there was a lack of direct guidance for engineering ...
Wenjie Shen   +3 more
doaj   +1 more source

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