Results 21 to 30 of about 1,003,276 (281)

Dynamics and effective distance of gas–liquid two-phase swirling flow induced by vortex tools

open access: yesAdvances in Mechanical Engineering, 2018
Based on the mechanistic model of the two-phase swirling annular flow behavior, a calculation method for the effective distance of vortex tool is obtained by taking Kelvin–Helmholtz instability into account.
Zhao Zhang, Ruiquan Liao, Jie Liu
doaj   +1 more source

Combined use of techniques of fistula ligation in the intersphincteric space and laser destruction of the fistula tract in patients with chronic paraproctitis

open access: yesВестник хирургии имени И.И. Грекова, 2023
The OBJECTIVE was to improve the treatment outcomes of patients with chronic paraproctitis using the combination of minimally invasive techniques.METHODS AND MATERIALS.
I. V. Gor   +2 more
doaj   +1 more source

NARMAX Identification Based Closed-Loop Control of Flow Separation over NACA 0015 Airfoil

open access: yesFluids, 2020
A closed-loop control algorithm for the reduction of turbulent flow separation over NACA 0015 airfoil equipped with leading-edge synthetic jet actuators (SJAs) is presented.
Sohaib Obeid   +2 more
doaj   +1 more source

Lift-up, Kelvin-Helmholtz and Orr mechanisms in turbulent jets [PDF]

open access: yes, 2020
Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz and Orr, are characterized via global resolvent analysis and spectral proper orthogonal decomposition (SPOD) over a range of Mach numbers.
Cavalieri, André V. G.   +5 more
core   +2 more sources

Flow Visualization of Spinning and Nonspinning Soccer Balls Using Computational Fluid Dynamics

open access: yesApplied Sciences, 2020
Various studies have been conducted on the aerodynamic characteristics of nonspinning and spinning soccer balls. However, the vortex structures in the wake of the balls are almost unknown. One of the main computational fluid dynamics methods used for the
Takeshi Asai   +3 more
doaj   +1 more source

Nasal lifting [PDF]

open access: yesAesthetic Surgery Journal, 2005
Patients with gland hyperplasia as well as thickening and redundancy of nasal skin who receive treatment that addresses only the support structures generally suffer from lack of definition of the nasal tip. We report on a case in which this problem was treated by redefinition of the nasal dorsum and tip through resection of the redundant skin.
Ronaldo, Pontes   +3 more
openaire   +2 more sources

CFD Analysis of the Location of a Rear Wing on an Aston Martin DB7 in Order to Optimize Aerodynamics for Motorsports

open access: yesVehicles, 2022
The purpose of this study is to identify the initial lateral and vertical location and angle of attack of a GT4-style rear wing on the rear downforce for an Aston Martin DB7 Vantage, prior to installation.
Thomas P. O’Driscoll, Andrew R. Barron
doaj   +1 more source

Microfluidics and Nanofluidics in Strong Light–Matter Coupling Systems

open access: yesNanomaterials
The combination of micro- or nanofluidics and strong light–matter coupling has gained much interest in the past decade, which has led to the development of advanced systems and devices with numerous potential applications in different fields, such as ...
Evelyn Granizo   +4 more
doaj   +1 more source

Laboratory investigation of tyre sliding grip coefficient

open access: yesTransport, 2006
The paper presents the results of a laboratory investigation on the variation of the tyre sliding grip coefficient depending on the tyre construction, the air pressure, the vertical load and the wheel camber. Eight different models of tyres are tested. A
Rosen Ivanov, Rusi Rusev, Plamen Ilchev
doaj   +1 more source

Investigation of transition between spark ignition and controlled auto-ignition combustion in a V6 direct-injection engine with cam profile switching [PDF]

open access: yes, 2008
Controlled auto-ignition (CAI) combustion, also known as Homogeneous Charge Compression Ignition (HCCI) can be achieved by trapping residuals with early exhaust valve closure in a direct fuel injection in-cylinder four-stroke gasoline engines (through ...
Kalian, N, Qiao, J, Zhao, H
core   +1 more source

Home - About - Disclaimer - Privacy