Results 41 to 50 of about 550,152 (284)

Advances in Unsteady Dynamics of Secondary Flow in 90° Pipe Bends [PDF]

open access: yes长江科学院院报
[Objective] The unsteady motion of secondary flow, namely Dean vortices, in bent pipes can induce thermal fatigue and mechanical fatigue, posing a serious threat to the safe operation of industrial piping systems.
WANG Zhi-xin, HAN Song-lin, JIANG Zhi-bing
doaj   +1 more source

Effects of inlet junctions on horizontally stratified flows

open access: yesAIP Advances, 2023
Horizontally stratified flows can be seen in a wide variety of micro-scale engineering problems. Recent studies have shown that diffusion at the interface between two liquids leads to a lateral flow, causing the fluid to rotate around the central axis of
Pooyan Heravi, Li-An Chu, Da-Jeng Yao
doaj   +1 more source

The influence of secondary flow structures in a turbocharger turbine housing in steady state and pulsating flow conditions [PDF]

open access: yes, 2016
This paper presents a computational investigation into the effect of volute secondary flow structures on turbine inlet flow conditions. The steady state results show Dean type vortices exist early in the volute.
Jupp, Martyn   +2 more
core   +1 more source

Dean number only can not determine characteristics of fluid flow and heat transfer in helically coiled tubes with large curvature

open access: yesCase Studies in Thermal Engineering
The majority of reported findings indicate that the fluid flow and heat transfer characteristics within helically coiled tubes (HCTs) with small curvature can be determined solely by Dean number.
Jinlong Zhang   +4 more
doaj   +1 more source

The asymptotics of neutral curve crossing in Taylor–Dean flow

open access: yesZeitschrift für angewandte Mathematik und Physik, 2005
The fluid flow between a pair of coaxial circular cylinders generated by the uniform rotation of the inner cylinder and an azimuthal pressure gradient is susceptible to both Taylor and Dean type instabilities. The flow can be characterised by two parameters: a measure of the relative magnitude of the rotation and pressure effects and a non-dimensional ...
Hills, C. P., Bassom, A. P.
openaire   +4 more sources

Numerical analysis of thermohydraulic and exergetic performance in corrugated spiral tubes with diverse arc corrugation configurations

open access: yesCase Studies in Thermal Engineering, 2023
This study numerically analyzes the thermohydraulic performance and exergy destruction in a corrugated spiral tube, considering inward, outward, and combined inward-outward configurations versus smooth spiral tubes.
Noureddine Elboughdiri   +9 more
doaj   +1 more source

Multi-Vortex Regulation for Efficient Fluid and Particle Manipulation in Ultra-Low Aspect Ratio Curved Microchannels

open access: yesMicromachines, 2021
Inertial microfluidics enables fluid and particle manipulation for biomedical and clinical applications. Herein, we developed a simple semicircular microchannel with an ultra-low aspect ratio to interrogate the unique formations of the helical vortex and
Shaofei Shen, Xin Wang, Yanbing Niu
doaj   +1 more source

Triblock Polymer Engineering Enables Hydration‐Rich, High‐Performance, Fouling‐Resistant Interfaces

open access: yesAdvanced Functional Materials, EarlyView.
A molecularly engineered triblock polymer (PHZ) rapidly reorganizes into a hydration‐rich interfacial layer on diverse surfaces, strongly suppressing hydrophobic attraction and fouling. The triblock polymer provides robust energy and steric barriers to oily foulants, enabling high‐performance antifouling at ultralow dosage.
Chenyu Qiao   +6 more
wiley   +1 more source

A Personalized, 3D Printed Polymeric Device for the Prevention of Post‐Myocardial Infarction Cardiac Remodeling

open access: yesAdvanced Healthcare Materials, EarlyView.
Myocardial infarction often leads to pathological remodelling and ventricular dilatation, key features of HFrEF. This study introduces a personalized, 3D‐printed cardiac restraint device (CARD) printed using rationally designed inks displaying the requested printability and mechanical properties.
Nicola Mansour   +6 more
wiley   +1 more source

CORE: Cholesterol Altered Lipid Nanoparticles for Splenic Expression of mRNA Payloads

open access: yesAdvanced Healthcare Materials, EarlyView.
In this paper researchers introduce CORE LNPs, a new class of lipid nanoparticles engineered to redirect mRNA expression away from the liver and into the spleen, a key immune organ. By combining chemical design with computational tools, they created cholesterol analogs that enable precise spleen‐targeted expression, providing greater applications for ...
Eshan A. Narasipura   +4 more
wiley   +1 more source

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