Droplet breakage is a common phenomenon in converting pipe flow to swirl vane-type separator (VTPS)’ inlet. The evaluation of the dispersed droplet sizes after crucial optimum design inlet structure and estimation oil-water separation performance. This paper studies behavior produced by guiding vanes. Experiments are performed with two different vanes at VTPS. oil droplets downstream measured s...

Abstract This paper takes the guiding blade of a type aero-engine needle as research object for icing problem and uses numerical simulation method to simulate airflow field, supercooled water droplet impact situation on surface under different flight conditions, analyze influence speed blade. It is found that incoming flow velocity has significant effect guide vanes, with increasing from 34m/s ...

In principle, suppression of on-axis stellar light by a coronagraph is easier on an unobscured aperture telescope than on one with an obscured aperture. Recent designs such as the apodized pupil Lyot coronagraph, the ‘band-limited’ Lyot coronagraph, and several variants of phase mask coronagraphs work best on unobscured circular aperture telescopes. These designs are developed to enable the dis...

Dust devils are common but meteorologically unique phenomena on Earth and on Mars. The phenomenon produces a vertical vortex motion in the atmosphere boundary layer and often occurs in hot desert regions, especially in the afternoons from late spring to early summer. Dust devils usually contain abundant wind energy, for example, a maximum swirling wind velocity of up to 25 m/s, with a 15 m/s ma...

We give an explicit formula for the cohomology of a right angled Artin group with group ring coefficients in terms of the cohomology of its defining flag complex.

The widespread trend of pursuing higher efficiencies in radial turbochargers led to the prompting this work. A 3D-printed model static parts a variable geometry turbine, vaned nozzle, and volute, was developed. This up-scaled from actual reference turbine place sensors characterize flow around nozzle vanes, including tip gap. In study, computational scaled-up carried out verify results two ways...

In recent years, as the mobile equipment advances, higher output and higher energy density are required of the battery which drives the mobile equipment. As one of the solutions, development of portable fuel cells (DMFC) with methanol used for fuel has been progressed and the fuel cells will be soon put to practical use. The authors have developed a small air pump (0.2W output), which is mounte...