Flow behaviour and thermal separation mechanism on vortex tubes have been studied numer-ically. Rapid expansion indicated by high-pressure gradient near the inlet exit ports contributes to energy parallel counter flow tubes. It creates a cooling process at core region drives an internal rotational transfer peripheral region, then increases gas temperature periphery along with friction due prese...

A topological defect in the form of Abrikosov-Nielsen-Olesen vortex a space arbitrary dimension is considered as gauge-flux-carrying tube that impenetrable for quantum matter. Charged scalar matter field quantized background with perfectly rigid (Neumann) boundary condition imposed at side surface vortex. We show current circulating around induced vacuum, if Compton wavelength exceeds transvers...

The tubed vortex reducer in the axial compressor can destroy disk cavity, by a thin-walled tube, to reduce total pressure loss. tube may suffer from vibration problems, such as flutter and forced vibration, which are closely related aerodynamic damping. In this paper, energy method influence coefficient used study damping of tube. Based on modal characteristics, steady unsteady flow characteris...

Esophageal Development. 1. The region of most active mitosis per mm. of cross-section in the esophagus is the entodermal epithelial tube. The mitotic figures follow a spiral path in the manner of a left-handed helix from the cephalic to the caudal direction. 2. The region of least active growth per mm. of cross-section in the esophagus is the mesenchyme surrounding the epithelial tube. 3. The h...

The stretched-spiral vortex model is used to calculate the velocity-scalar cross spectrum for homogeneous, isotropic turbulence in the presence of a mean scalar gradient. The only nonzero component of the cospectrum is that contributed by the velocity component in the direction of the imposed scalar gradient while the quadrature spectrum is identically zero, in agreement with experiment. For th...