Results 31 to 40 of about 254,596 (292)

Aeolian tone radiated from a circular cylinder with solid spiral fin in cross flow

open access: yesJournal of Fluid Science and Technology, 2014
This study focuses on the characteristics of the Aeolian tone and Karman vortex shedding from a circular cylinder with a solid spiral fin. The fin pitch ratios range from 0.11 to 0.80.
Hiromitsu HAMAKAWA   +6 more
doaj   +1 more source

Flow visualization observation of the interference vortex flow from a pair of square cylinders

open access: yesJournal of Fluid Science and Technology, 2023
In order to investigate the aspect of the mutual interference flow from two square cylinders, the visual water-flow observation experiment was performed. In the experiment, the pitch ratio L/d and the arrangement angle α were made into the parameter, and
Yoshifumi YOKOI
doaj   +1 more source

Insights into Vortex Shedding with Data Analysis

open access: yesJournal of Fluid Science and Technology, 2009
Unsteady, three-dimensional characteristics of vortex shedding were studied with self-made MEMS sensors situated spanwisely on a circular cylinder subjected to uniform incoming flow. Firstly, verification on the reliability of the MEMS sensor signals was
Jiun-Jih MIAU, J. K. TU, T. W. LIAO
doaj   +1 more source

Hysteresis in quantized vortex shedding [PDF]

open access: yesPhysical Review A, 2014
It is shown using numerical simulations that flow patterns around an obstacle potential moving in a superfluid exhibit hysteresis. In a certain velocity region, there is a bistability between stationary laminar flow and periodic vortex shedding. The bistability exists in two and three dimensional systems.
Kadokura, Tsuyoshi   +2 more
openaire   +2 more sources

The essence of generating vortex-within-a-vortex structures behind forked caudal fins

open access: yesAIP Advances, 2022
This work focuses on vortex-within-a-vortex (VV) structures behind three different shapes of forked caudal fin with a heaving-pitching motion. The results show that the synchronization of trailing-edge vortex separation and the shedding of the leading ...
Zhongying Xiong
doaj   +1 more source

Research on the Unsteady Flow and Vortex Characteristics of Cavitation at the Tongue in Centrifugal Pump [PDF]

open access: yesJournal of Applied Fluid Mechanics
In order to study the unsteady flow and vortex characteristics of tongue cavitation, numerical calculation is carried out for the whole flow channel given different conditions. Then, the calculation results are verified experimentally.
Z. Y. Luo   +5 more
doaj   +1 more source

Effects of swirl numbers on the unsteady characteristics of pilot flame in a triple-swirler staged combustor

open access: yesCase Studies in Thermal Engineering, 2023
This paper studies the effects of the inner and outer pilot swirlers on the flame structures and thermo-acoustic instabilities in the triple-swirler staged combustors under various inner and outer pilot swirl numbers.
Tao Zhou   +5 more
doaj   +1 more source

Vortex shedding from tapered, triangular plates: taper and aspect ratio effects

open access: yes, 2004
Further experiments on features of the vortex shedding from tapered flat plates normal to an airstream are described. The work extends that of Castro and Rogers (2002) and concentrates on the study of the effects of varying the spanwise aspect ratio for ...
Lee Watson   +3 more
core   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

open access: yesAdvanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite   +5 more
wiley   +1 more source

Investigation on mechanism of flow induced vibration of spiral tube bundle in cross lead bismuth flow

open access: yesHe jishu, 2021
BackgroundThe flow induced vibration of spiral tube bundle widely exists engineering practice. The traditional fluid medium is water and air, whilst lead bismuth fluid has gradually become a new heat exchange medium in recent years.PurposeThis study aims
WANG Zhengyang   +5 more
doaj   +1 more source

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