The supposed low viscosity of serpentine may strongly influence subduction-zone dynamics at all time scales, but until now its role could not be quantified because measurements relevant to intermediate-depth settings were lacking. Deformation experiments on the serpentine antigorite at high pressures and temperatures (1 to 4 gigapascals, 200 degrees to 500 degrees C) showed that the viscosity o...

Zigzag functions were deened by Brassard, Cr epeau and SS antha 1] in connection with an application to the construction of oblivious transfers (a useful tool in cryptographic protocols). They proved that linear zigzag functions are equivalent to self-intersecting codes, which have been studied by several researchers. In this paper, we begin an investigation of general (linear or non-linear) zi...

Passive micromixing can efficiently mix laminar flows through molecular and convective diffusion. Microstructures are expected to be efficient, easily integrated into micromixers, suitable for micromixers over a wide range of Re. This paper presents the enhancement effects multiscale lateral microstructures on flow field characteristics mixing efficiency numerical simulations at Re = 0.01–50. I...

Polymer solutions in the semi-dilute regime are of considerable industrial importance. The complex rheological properties such highly viscoelastic fluids and complexity their flow characteristics, especially curved geometries, necessitate a thorough experimental characterization dynamics fluid flows. We apply statistical, spectral, structural analyses to experimentally obtained velocity fields ...

Particle image velocimetry was used to measure 2D velocity fields in representative regions of interest within flow channels of interdigitated and single-serpentine proton exchange membrane (PEM) fuel cell models. The model dimensions, gas diffusion layer (GDL) permeability, working fluid, and flow rates were selected to be geometrically and dynamically similar to the cathode-side airflow in a ...

As an extension of our previous study, the flow and mixing characteristics of a serpentine mixer in non-creeping flow conditions are investigated numerically. A periodic velocity field is obtained for each spatially periodic channel with the Reynolds number (Re) ranging from 0.1 to 70 and the channel aspect ratio from 0.25 to one. The flow kinematics is visualized by plotting the manifold of th...