Results 21 to 30 of about 6,551 (166)

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

Vortex-Breakdown Efficiency of Planar Regular Grid Structures—Towards the Development of Design Guidelines

open access: yesFluids
The work presented here aims to provide design guidelines to create vortex-damping structures. A design of experiment was developed to investigate the individual and combined effects of the geometrical properties of planar regular grid structures, i.e ...
Julien Sirois   +3 more
doaj   +1 more source

Simulation of flow around a slender body at high angles of attack

open access: yesMATEC Web of Conferences, 2017
LES of the flow around an ogive-cylinder body at high angles of attack were carried out to investigate the possibility of the development of asymmetric wake-vortex without the introduction of artificial perturbations. The study investigated the effect of
Obeid Osama, Alqadi Ibraheem
doaj   +1 more source

Investigations on Design Space for Highly Loaded Tandem Bladed Axial Flow Rotor- novel Stator for Low-speed Compressor Research Facility [PDF]

open access: yesJournal of Applied Fluid Mechanics
Tandem bladed axial flow compressor concept has immense potential for increasing the stage loading over conventional stages. This infers significant improvement in gas turbine engine operational economics and performance.
A. Singh, C. S. Mistry
doaj   +1 more source

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