Pretilt angle is a parameter of the utmost importance in the ultimate performance of vertically-aligned negative nematic LC displays. When these devices work in reflective mode, as is the LCOS microdisplays, accurate measurement of pretilt angles becomes a difficult problem, since usual experimental setups based on retardation of the polarization components of the impinging light are proportion...

Experiments were conducted with PF-5052 liquid sprays impacting a 1.0 1.0 cm heated test surface at different inclination angles, flow rates, and subcoolings. Inclination angle had no noticeable effect on the single-phase or two-phase regions of the boiling curve. Maximum CHF was always achieved with the spray impinging normal to the test surface; increasing angle of inclination away from the n...

As the final flow channel of liquid rocket engine, manufacturing impinging atomization nozzles has become a critical link in manufacture components. At present, high-precision machining millimeter large-scale production is quite difficult, which inevitably leads to diversity internal field and parameters. In this investigation, influence diameter deviation on analyzed by experiment. The transpa...

Introduction: Osteochondroplasty of the anterior head-neck junction is often performed to treat femoro-acetabular impingement (FAI) on the assumption that the underlying deformity is inadequate anterior offset of the femoral head. However, other morphologic abnormalities, including reduced anteversion, posterior slip, and widening of the neck can all cause loss of joint motion. In this study we...

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Impinging jets are used in a wide number of industrial cooling applications due to their high heat and mass transfer abilities. The current research is concerned with the effect of swirl on the heat transfer characteristics of jet impingement cooling. Two inserts were designed order to generate swirling flow. These two designs, “Swirl Insert A” and “Swirl Insert B”, were tested at various Reyno...

We present hydrodynamic and magnetohydrodynamic (MHD) simulations of liquid sodium flow with the PLUTO compressible MHD code to investigate influence of magnetic boundary conditions on the collimation of helicoidal motions. We use a simplified cartesian geometry to represent the flow dynamics in the vicinity of one cavity of a multiblades impeller inspired by those used in the Von-Kármán-sodium...

The problem of optical ray propagation in a nonuniform random half-plane lattice is considered. An external source radiates a planar monochromatic wave impinging at an angle theta on a half-plane random grid where each cell can be independently occupied with probability q(j)=1-p(j),j being the row index. The wave undergoes specular reflections on the occupied cells, and the probability of penet...

Turbulences in liquids caused by jets can be of interest for numerous applications. For one, it concerns flood spillway structures within civil engineering but also is key in any area where turbulent mixing is present. The numerical simulations of jets that impinge into plunge pools are still in an early phase of their development. This paper verifies the accuracy of the Flow-3D software packag...

In this article, we present a novel method for high-resolution joint direction-of-arrivals (DOA) and multi-pitch estimation based on subspaces decomposed from a spatio-temporal data model. The resulting estimator is termed multi-channel harmonic MUSIC (MC-HMUSIC). It is capable of resolving sources under adverse conditions, unlike traditional methods, for example when multiple sources are impin...