نتایج جستجو برای: jet injection angle
تعداد نتایج: 320441 فیلتر نتایج به سال:
The evolution of co-rotating streamwise vortices in a canonical flat plate turbulent boundary layer ~thickness of the boundary layer d0.99525 mm) is studied. The vortices are produced by an array of inclined jets ~diameter D514 mm) with the same orientation ~skew angle b and pitch angle a of 45°!. The focus of the investigation is on the immediate vicinity of the jet exit and downstream locatio...
The thin-jet model, applied by Spence to the study of the jet flap, is combined with the vortex-sheet model, applied by Mangler and Smith to the study of leading-edge separation, to study the effect of blowing from the leading edges of a delta wing at incidence. A jet-vortex sheet, supporting a pressure difference related to the curvature of the streamlines in it, leaves the leading edge in a d...
We investigate how the angular structure of GRB jets effects the afterglow light curves at different viewing angles, θv, from the jet symmetry axis. A numerical hydrodynamical modeling for the evolution of a relativistic collimated outflow, as it interacts with the surrounding medium, is carried out, and compared to two simple models that make opposite and extreme assumptions for the degree of ...
Introduction Calculation of the Trajectory of a Jet Diffusing into an Ambient Stream at a Small Angle Properties of a Diffusing Jet in a Parallel Ambient Stream Extension of CalC'1lations to the Case of a Jet Di £fusing into an Ambient Stream at a Small Angle Comparison with Experimental Jets l\ pplication to Mk-40 Torpedo Model Methods to Eliminate Scrubbing Based on Results of Simplified Calc...
We conduct two-dimensional hydrodynamical simulations of jets expanding in the intra-cluster medium (ICM). We find that for a fat, i.e. more or less spherical, bubble attached to the center to be formed the jet should have high momentum flux and a large opening angle. Typically, the half opening angle should be α & 50, and the large momentum flux requires a jet speed of vj ∼ 10 4 km s. The infl...
A simple integral relation is obtained for the distribution functions of jet speeds and jet-counterjet flux asymmetries of classical double radio sources. Analytic expressions relating the mean jet speed and the mean jet flux asymmetry, and their variances are derived. The results are considered in the light of orientation-based unified schemes, and an analytical equation for the critical angle...
This study is conducted to investigate efficacy of an insulin jet injector and an insulin pen in treatment of type 2 diabetic patients. Sixty patients with type 2 diabetes were treated with rapid-acting insulin (regular insulin) and insulin analog (insulin aspart) using the jet injector and the pen in 4 successive test cycles. Postprandial glucose and insulin concentrations in blood were measur...
Merging neutron stars offer an excellent laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an electromagnetic counterpart (EM170817) with gravitational waves (GW170817) detected from merging neutron stars. By synthesizing a panchromatic data set, we demonstrate that merging neutron stars are a long-sought pro...
Basal ray-finned fishes possess a heterocercal tail in which the dorsal lobe containing the extension of the vertebral column is longer than the ventral lobe. Clarifying the function of the heterocercal tail has proved elusive because of the difficulty of measuring the direction of force produced relative to body position in the aquatic medium. We measured the direction of force produced by the...
Intensive monitoring of the innermost jet in the quasar 3C 279 at 43 GHz from 1998 March to 2001 April with the Very Long Baseline Array, in combination with previous observations, reveal (1) an increase in apparent speed from 5c to 17c and (2) a change in projected direction of the jet by 20 . These effects could result from a small increase in the intrinsic viewing angle of the jet nozzle fro...
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