Results 71 to 80 of about 909,429 (299)

Effective slip boundary conditions for flows over nanoscale chemical heterogeneities

open access: yes, 2007
We study slip boundary conditions for simple fluids at surfaces with nanoscale chemical heterogeneities. Using a perturbative approach, we examine the flow of a Newtonian fluid far from a surface described by a heterogeneous Navier slip boundary ...
C. Cottin-Bizonne   +5 more
core   +1 more source

Quantifying effective slip length over micropatterned hydrophobic surfaces [PDF]

open access: yes, 2009
We employ micro-particle image velocimetry ($\mu$-PIV) to investigate laminar micro-flows in hydrophobic microstructured channels, in particular the slip length.
Alisia M. Peters   +8 more
core   +5 more sources

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

open access: yesAdvanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein   +2 more
wiley   +1 more source

Design method of thermal connector for electronic equipment cooling

open access: yesNihon Kikai Gakkai ronbunshu, 2017
We have developed the evaluation method for two performance factors to design the thermal connector: Insertion force of thermal grease and thermal conductance.
Tomoo HAYASHI   +4 more
doaj   +1 more source

Very high cycle fatigue of copper: Evolution, morphology and locations of surface slip markings [PDF]

open access: yes, 2014
The surfaces of commercially pure polycrystalline copper specimens subjected to interrupted 20 kHz fatigue tests in the very high cycle fatigue regime were investigated.
FAVIER, Véronique   +4 more
core   +4 more sources

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena   +2 more
wiley   +1 more source

Couette Flow of a Yield-Stress Fluid With Slip As Studied by Rheo-Piv

open access: yesApplied Rheology, 2017
The Couette flow of a model yield-stress fluid with slip at the walls, a 0.12% Carbopol® 940 microgel, was analyzed in this work by simultaneous rheometrical and particle image velocimetry measurements (Rheo-PIV).
Medina-Bañuelos Esteban F.   +3 more
doaj   +1 more source

Analytical calculation of slip flow in lattice Boltzmann models with kinetic boundary conditions

open access: yes, 2004
We present a mathematical formulation of kinetic boundary conditions for Lattice Boltzmann schemes in terms of reflection, slip, and accommodation coefficients. It is analytically and numerically shown that, in the presence of a non-zero slip coefficient,
Sbragaglia, Mauro, Succi, Sauro
core   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

Boundary condition, an old but not well solved problem, linked from nanometer to macroscale [PDF]

open access: yes, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011)   +2 more
core  

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