Experimental results indicate that the jets show complicated flow pattern and concentration distribution characteristics different from common buoyant jets, and spread downstream in the manner of density currents.
From a vast amount of experimental researches and comprehensive analysis,it has been obtained that the compression strength of the sandstone and limestone and their critical values of rock breaking pressure resisting nozzle fluidics washing are 19.1 26.9,which provides a reliable data for the design of drilling hydraulic parameter and also a theoretical basis for production operation.
Polysulfone nanofibers prepared by electrospinning and gas/jet-electrospinning
The electrospinning equipment was designed in a new way, wherein the spinneret was combined with a gas jet device.
The gas used in this gas jet/electrostatic spinning was nitrogen.
The diameter of polysulfone nanofibers prepared by the gas jet/electrostatic spinning was in the range 50-500 nm.
It is concluded that the gas-jet/electrospinning is a better method than the conventional electrospinning, in that it makes the nanofibers finer and more uniform and exhibits higher efficiency in the process of electrospinning.
On the basis of the mass, energy, and momentum conservation laws formulated for capillary continua, formulas describing postrelaxation results of merging of jets from slitlike sources were obtained.
The effect of inelastic interaction between stationary jets in the noncapillary limit was revealed, as well as specific effects of capillary continua, which have no analogs in inelastic collision of isolated bodies.
Distortion of Radio Reflections from Spacecraft Construction Elements by Plasma Jets and Structures: Physical Modeling
The methodology of physical modeling of scattering of electromagnetic waves by plasma jets and structures near a spacecraft's surface is developed.
Capillary Disintegration and Confluence of Jets in Terms of Conservation Laws