Results 81 to 90 of about 223,655 (302)

Velocity Slip and Temperature Jump in Hypersonic Aerothermodynamics [PDF]

open access: yes45th AIAA Aerospace Sciences Meeting and Exhibit, 2007
Hypersonic vehicles experience different flow regimes during flight due to changes in atmospheric density. Computational fluid dynamics, although relatively computationally inexpensive, is not physically accurate in areas of highly nonequilibrium flows.
Lofthouse, Andrew J.   +2 more
openaire   +2 more sources

Evaluation of Plasticity and Creep Parameters From Tensile Stress–Strain Data for a Range of Strain Rates

open access: yesAdvanced Engineering Materials, EarlyView.
This plot compares experimental tensile stress–strain curves (with 4 different strain rates) and corresponding modelled curves (obtained using the optimised sets of Voce and Miller–Norton parameter values shown). The inferred M‐N values, characterizing the creep, are very similar to those obtained via conventional creep testing.
S. Ooi, R. P. Thompson, T. W. Clyne
wiley   +1 more source

A model for frictional sliding instability on a heterogeneous fault

open access: yesAnnals of Geophysics, 1994
An instability of frictional sliding driven by tectonic stress is assumed to be the source of earthquakes. Empirical slip laws indicate that, under constant ambient conditions, friction depends on time, slip rate and slip history.
A. Piombo, M. Dragoni
doaj   +1 more source

Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well

open access: yesShock and Vibration, 2020
Stick-slip is very harmful to the service life of drillstring. The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model.
Baojin Wang, Zhongyang Wang, Fushen Ren
doaj   +1 more source

Incompressible Limit of isentropic Navier-Stokes equations with Navier-slip boundary

open access: yes, 2017
This paper concerns the low Mach number limit of weak solutions to the compressible Navier-Stokes equations for isentropic fluids in a bounded domain with a Navier-slip boundary condition.
Linjie, Xiong
core   +1 more source

Subducting slab ultra-slow velocity layer coincident with silent earthquakes in southern Mexico [PDF]

open access: yes, 2009
Great earthquakes have repeatedly occurred on the plate interface in a few shallow-dipping subduction zones where the subducting and overriding plates are strongly locked.
Brudzinski, Michael R.   +6 more
core   +2 more sources

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Blasius Problem with Generalized Surface Slip Velocity

open access: yesJournal of Applied Fluid Mechanics, 2016
This paper considers the classical problem of the steady boundary layer flow past a semi-infinite flat plate first considered by Blasius in 1908 with generalized surface slip velocity. Numerical solutions are obtained by solving the nonlinear similarity equation using the bvp4c function from MATLAB for several values of the slip parameters.
Teodor Grosan, Cornelia Revnic, Ioan Pop
openaire   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger   +11 more
wiley   +1 more source

FEEDBACK BOUNDARY OF 4:1 ROUNDED CONTRACTION SLIP FLOW FOR OLDROYD-B FLUID BY FINITE ELEMENT [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
The driven force feedback in viscoelastic flow is a technique to enforce converged solution of Oldroyd-B fluid on the basis of semi-implicit TaylorGalerkin finite element method for 4:1 contraction geometry with rounded corner meshes.
NAWALAX THONGJUB
doaj  

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