Results 21 to 30 of about 784 (168)

Developing Lengths in Woven and Helical Tubes with Dean Vortices Flows [PDF]

Engineering Applications of Computational Fluid Mechanics, 2009
Coiling membranes help to create in a flow Dean vortices which enhance flux permeation and bring improvement to membrane filtration processes.
Fanny Springer, Emilie Carretier, Damien Veyret, Philippe Moulin   +3 more
openaire   +1 more source

Stereo and time-resolved PIV for measuring pulsatile exhaust flow from a motorized engine

Journal of Fluid Science and Technology, 2018
The present experimental study deals with a pulsatile turbulent flow simulating the exhaust flow of an automotive engine. In the experiments, a four-cylinder engine is used as an exhaust-flow generator to realize flow conditions close to those in an ...
Junichi OKI, Yukika KUGA, Yoichi OGATA, Keiya NISHIDA, Ryo YAMAMOTO, Kazuhiro NAKAMURA, Haruna YANAGIDA, Hideaki YOKOHATA   +7 more
doaj   +1 more source

Theoretical investigation on the impact of an oscillating time-dependent pressure gradient on Dean flow in a porous annulus

Propulsion and Power Research, 2021
In this article, a theoretical analysis on flow in a curvilinear horizontal coaxial cylinder with permeable walls has been proposed. Specifically, the transient impact of an oscillating pressure gradient has been taken into account.
Basant K. Jha, Dauda Gambo
doaj   +1 more source

Visualization of Flows in Curved Channels with a Moderate or High Rotation Speed

International Journal of Rotating Machinery, 1997
Flows in channels with streamwise curvature and spanwise rotation are visualized in terms of end-view near the exit of the test sections through injecting smoke into the flows. Two test sections are used, i.e.
Liqiu Wang, K. C. Cheng
doaj   +1 more source

Passive Micromixers with Interlocking Semi-Circle and Omega-Shaped Modules: Experiments and Simulations

Micromachines, 2015
This study presents experiments and computational simulations of single-layer passive micromixer designs. The proposed designs consist of chains of interlocking semicircles and omega-shaped mixing modules.
Ala’aldeen Al-Halhouli, Aiman Alshare, Mukeet Mohsen, Maher Matar, Andreas Dietzel, Stephanus Büttgenbach   +5 more
doaj   +1 more source

Microbial stabilization of grape musts and wines using coiled UV-C reactor

OENO One, 2020
UV-C light is well known for its germicidal properties and is widely used for water disinfection. However, its low penetration into absorbing liquids, such as wines and musts, reduces drastically the microbial inactivation effectiveness.
Rémy Junqua, Emmanuel Vinsonneau, Rémy Ghidossi   +2 more
doaj   +1 more source

Dean-Flow Affected Lateral Focusing and Separation of Particles and Cells in Periodically Inhomogeneous Microfluidic Channels

Sensors, 2023
The purpose of the recent work is to give a better explanation of how Dean vortices affect lateral focusing, and to understand how cell morphology can alter the focusing position compared to spherical particles.
Anita Bányai, Enikő Farkas, Hajnalka Jankovics, Inna Székács, Eszter Leelőssyné Tóth, Ferenc Vonderviszt, Róbert Horváth, Máté Varga, Péter Fürjes   +8 more
doaj   +1 more source

NUMERICAL STUDY OF THE STRUCTURE AND LOCAL TURBULIZATION OF THE FLOW IN A BLOOD VESSEL WITH A ONE-SIDE STENOSIS

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
Results of large eddy simulation of three-dimensional flow in a model of the blood vessel with a one-side 70% stenosis at a Reynolds number of 1800 are presented. The Germano-Lilly model was used for subgrid viscosity evaluation.
Gataulin Yakov, Smirnov Evgeny
doaj   +1 more source

Analysis of Dean vortices and sediment distribution in inlet passage of nearshore pump stations under solid-liquid two-phase conditions

Applied Ocean Research
Dean vortices are secondary flow vortices formed by the coupling effect of centrifugal and viscous forces when fluid flows through curved pipes. In nearshore pump station inlet flow passages, inhaled sediment interacts with Dean vortices, complicating ...
Cheng Ma, Yandong Gu, Jinwu Cheng, Hao Sun, Li Cheng   +4 more
doaj   +1 more source

Mixing Optimization in Grooved Serpentine Microchannels

Micromachines, 2020
Computational fluid dynamics modeling at Reynolds numbers ranging from 10 to 100 was used to characterize the performance of a new type of micromixer employing a serpentine channel with a grooved surface. The new topology exploits the overlap between the
Tyler Rhoades, Chandrasekhar R. Kothapalli, Petru S. Fodor   +2 more
doaj   +1 more source