Results 141 to 150 of about 4,629,349 (355)

General method of calculating annular laminar pressure drop of drilling fluids with different rheological models

open access: yesPetroleum Exploration and Development, 2013
Traditional annular laminar flow analysis method applied in drilling engineering has poor accuracy and does not apply to complicated rheological models.
Qi PENG   +6 more
doaj  

Wood and Cellulose: the Most Sustainable Advanced Materials for Past, Present, and Future Civilizations

open access: yesAdvanced Materials, EarlyView.
Wood and cellulose are the most abundant and important sustainable materials on the planet at the disposal to solve major societal challenges. This perspective, written for all materials scientists, highlights how breakthroughs in cellulose nanotechnology combined with functional nanomaterials can revolutionize important areas like construction ...
Mahiar Max Hamedi   +5 more
wiley   +1 more source

The laminar-to-turbulent transition in viscous fluid flow [PDF]

open access: yesarXiv, 2017
The onset of turbulence in laminar flow of viscous fluids is shown to be a consequence of the limited capacity of the fluid to withstand shear stress. This fact is exploited to predict the flow velocity at which laminar flow becomes turbulent and to calculate, on a theoretical basis, the corresponding critical value of the Reynolds number.
arxiv  

Recent Advances in Stimuli‐Responsive Materials and Soft Robotic Actuators for Bioelectronic Medicine

open access: yesAdvanced Materials, EarlyView.
This review explores the integration of responsive materials and soft robotic actuators with implantable electronics to address key challenges in bioelectronic medicine. By enabling shape actuation, these technologies improve deployment, adaptability, and accuracy in minimally invasive procedures.
Chaoqun Dong, George G. Malliaras
wiley   +1 more source

Materials Advances in Devices for Heart Disease Interventions

open access: yesAdvanced Materials, EarlyView.
This review examines the crucial role of materials in heart disease interventions, focusing on strategies for monitoring, managing, and repairing heart conditions. It discusses the material requirements for medical devices, highlighting recent innovations and their impact on cardiovascular health.
Gagan K. Jalandhra   +11 more
wiley   +1 more source

Turbulence Formation due to Vortices Interaction in the Laminar Channel Flow behind the Rib [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
This paper is devoted to the study of local laminar-turbulent transition mechanisms in the channel flow behind the semi-circular rib. Using direct numerical simulation, it was demonstrated that the transition occurs mainly due to the interaction of ...
A.B. Mazo, D.I. Okhotnikov
doaj  

Influences of Flow Attack Angles and Flow Directions on Heat Transfer Rate, Pressure Loss, and Thermal Performance in Heat Exchanger Tube with V-Wavy Surface

open access: yesModelling and Simulation in Engineering, 2018
Numerical investigations on flow and heat transfer characteristics in the heat exchanger tube with the V-wavy surface are presented. The finite volume method with the SIMPLE algorithm is selected to solve the present problem.
Amnart Boonloi   +1 more
doaj   +1 more source

Flow phenomena in laminar flow through streamlined and sharp-edged short monolithic structures. [PDF]

open access: yesSci Rep, 2023
Korpyś M   +5 more
europepmc   +1 more source

The Numerical Simulation of a 3D Flow in the VKI-Genoa Turbine Cascade Taking into Account the Laminar-Turbulent Transition [PDF]

open access: yesTASK Quarterly, Scientific Bulletin of the Academic Computer Centre in Gdansk, 20(1) (2016) 43-61, 2015
This study presents a numerical simulation of a 3D viscous flow in the VKI-Genoa cascade that takes into account the laminar-turbulent transition. The numerical simulation is performed using the Reynolds-averaged Navier-Stokes equations and the two-equation k-omega SST turbulence model.
arxiv  

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