Results 31 to 40 of about 1,726 (195)

Comprehensive study of particle separation in microfluidic devices [PDF]

مهندسی مکانیک شریف, 2021
Particle separation has received much attention in recent years due to its widespread use in various sciences such as engineering, medicine, and biotechnology.
M. Nazemi Ashani, M. Bayareh, B. Ghasemi, A. Shiriny   +3 more
doaj   +1 more source

Chiral symmetry breaking and entropy production in Dean vortices [PDF]

, 2023
In toroidal pipes, the secondary flow in cross section is a mirror symmetric pair of counter-rotating axially oriented Dean vortices. This mirror symmetry is broken in helical pipes.
Hochberg, David, Herreros Cid, María Isabel, Isabel Herreros, David Hochberg   +3 more
core   +1 more source

Influence of right coronary artery motion, flow pulsatility and non-Newtonian rheology on wall shear stress metrics

Frontiers in Bioengineering and Biotechnology, 2022
The patchy distribution of atherosclerosis within the arterial system is consistent with a controlling influence of hemodynamic wall shear stress (WSS).
Pratik Kandangwa, Pratik Kandangwa, Ryo Torii, Peter D. Gatehouse, Spencer J. Sherwin, Peter D. Weinberg   +5 more
doaj   +1 more source

A computational modeling on two-dimensional laminar flow and thermal characteristics through a strongly bent square channel

AIP Advances, 2023
In order to have a precise knowledge on how pressure gradients and buoyancy force affect fluid flow and energy distribution in a bending channel, it is important to perform a comprehensive study on flow characteristics and heat transfer mechanisms that ...
Sreedham Chandra Adhikari, Mohammad Sanjeed Hasan, Rifat Ara Rouf, Giulio Lorenzini, Rabindra Nath Mondal   +4 more
doaj   +1 more source

Synthesis and Biodistribution of ^99mTc-Labeled PLGA Nanoparticles by Microfluidic Technique

Pharmaceutics, 2021
The aim of present study was to develop radiolabeled NPs to overcome the limitations of fluorescence with theranostic potential. Synthesis of PLGA-NPs loaded with technetium-99m was based on a Dean-Vortex-Bifurcation Mixer (DVBM) using an innovative ...
Michela Varani, Giuseppe Campagna, Valeria Bentivoglio, Matteo Serafinelli, Maria Luisa Martini, Filippo Galli, Alberto Signore   +6 more
doaj   +1 more source

NUMERICAL INVESTIGATION FOR THE HEAT TRANSFER ENHANCEMENT IN HELICAL CONE COILS OVER ORDINARY HELICAL COILS [PDF]

Journal of Engineering Science and Technology, 2013
This numerical research is introducing the concept of helical cone coils and their enhanced heat transfer characteristics compared to the ordinary helical coils. Helical and spiral coils are known to have better heat and mass transfer than straight tubes,
M. M. ABO ELAZM, A. M. RAGHEB, A. F. ELSAFTY, M. A. TEAMAH   +3 more
doaj  

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

Effect of Geometric Factors on Fluid Flow and Heat Transfer of Supercritical Methane in U-type Tube

Journal of Harbin University of Science and Technology, 2021
Supercritical methane heat exchangers are widely used in engineering practice. The heat transfer law of supercritical methane is special and compalicated due to the drastic change of physical properties near the pseudo-critical tempaerature. Based on the
SUN Peng, LU Yi-ping, HAN Chang-liang, XU Qi-ao, ZHANG Yu-nan   +4 more
doaj   +1 more source

Optimization of lateral inlet/outlet with horizontal bend in pumped storage power station

Shui kexue jinzhan
In practical engineering of pumped storage power station，water tunnels often feature horizontal bends influenced by terrain，leading to significant flow differences between the channels at the inlet/outlet.
Ganggui GUO, Yakun LIU, Jie WEI, Yangliang LU, Di ZHANG   +4 more
doaj   +1 more source

A numerical study of flow characteristics in a helical pipe

Advances in Mechanical Engineering, 2016
Flow characteristics and loss mechanism inside the helical pipe with large-caliber and large-scale Dean number were analyzed in this study. Numerical simulation was carried out for exploring velocity distribution, pressure field, and secondary flow by ...
Lingdi Tang, Yue Tang, Siva Parameswaran
doaj   +1 more source