Results 91 to 100 of about 13,073 (314)

Effect of Synthetic Jet on NACA0012 Airfoil Vortex Structure and Aerodynamic Characteristics [PDF]

open access: yesJournal of Applied Fluid Mechanics
In this manuscript, the vortex generated by the main frequency excitation of the shedding vortex at various attack angles is investigated by employing the synthetic jet control technique.
J. Wang, X. Shi, Q. Zhang, J. Chang
doaj   +1 more source

Stress History Establishes a Transient Tolerant State That Shapes Antibiotic Survival Upon Resuscitation

open access: yesAdvanced Science, EarlyView.
High‐throughput single‐cell analysis of resuscitating bacteria reveals a starvation‐history‐dependent transiently tolerant subpopulation that survives β$\beta$‐lactam exposure by temporarily reducing growth. Distinct from classical persisters, these actively growing yet dynamically modulated cells dominate survival across clinically relevant antibiotic
Kieran Abbott   +5 more
wiley   +1 more source

Proper orthogonal decomposition analysis of vortex shedding behind a rotating circular cylinder

open access: yesEPJ Web of Conferences, 2016
Turbulence studies were made in the wake of a rotating circular cylinder in a uniform free stream with the objective of describing the patterns of the vortex shedding up to suppression of the periodic vortex street at high velocity ratios, λ. The results
Dol Sharul Sham
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

Numerical Study of Vortex-Induced Vibration Characteristics of a Long Flexible Marine Riser

open access: yesJournal of Marine Science and Engineering
In ocean engineering, interactions between ocean currents and risers lead to regular vortex shedding on both sides of the riser, causing structural deformation.
Jiahe Zou   +5 more
doaj   +1 more source

Vortex-induced vibration of two elastically connected bodies: experimental verification of lock-in to multiple eigenmodes

open access: yesJournal of Fluid Science and Technology, 2017
This study examines experimentally the vortex-induced vibration (VIV) of a mechanical system with two eigenmodes. A previous experiment setup was refined to enable the experiment, and was placed in a circulating water channel to submerge a movable ...
Yoshiki NISHI, Komei SAITOH
doaj   +1 more source

Time-averaged heat transfer and vortex shedding of a singular and twin heated bluff bodies in cross flow [PDF]

open access: yes, 2018
Flow characteristics in the onset of vortex shedding and heat transfer pattern over a single and two same-sized square prisms placed in tandem are studied numerically.
Etminan, A.   +3 more
core   +1 more source

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

open access: yesAdvanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova   +8 more
wiley   +1 more source

Analysis on Exterior Circumferential Flow and Vibration of Subsea Jumper

open access: yesShiyou jixie, 2016
By taking vertical M-type rigid jumper as the research object,a 3D model of the jumper is built by using Solidworks software,and it is imported into ABAQUS finite element software to conduct modal analysis in order to obtain inherent frequency of the ...
胡飚   +5 more
doaj  

Aerodynamics of F1 car side mirror [PDF]

open access: yes, 2007
This study investigates the aerodynamic performance of a Formula 1 carrear view side mirror when the location of its glass is varied inside its frame. Bothexperimental and computational studies have been carried out for a simplifiedtwo-dimensional model ...
Hu, Zhiwei W., Rind, Elad
core  

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