One possible method of reducing jet noise at takeoff is the use of an ejector in which the propelling nozzle discharges into a shroud and thereby induces a secondary flow. The present report describes an experiment on the aerodynamics of such systems. The primary nozzle was axisymmetric and convergent and the shrouds were cylindrical with faired convergent entries. The stagnation temperatures o...

compressible gas flow inside a convergent-divergent nozzle and its exhaust plume atdifferent nozzle pressure ratios (npr) have been numerically studied with severalturbulence models. the numerical results reveal that, the sst k–ω model give the bestresults compared with other models in time and accuracy. the effect of changes in value ofdivergence half-angle (ε ) on the nozzle performance, thru...

This research aims to investigate the control effect of asymmetric flow in a slab mold using novel magnetic field arrangement: freestanding adjustable combination electromagnetic brake (FAC-EMBr). Three scenarios (submerged entry nozzle moves narrow face, wide face mold, and rotates 10°) were studied three-dimensional numerical simulation. The results show that generated by FAC-EMBr system can ...

During the steel continuous casting, submerged entry nozzle (SEN) plays a crucial role in fluid characteristic of steel, which further affects slab quality. In this paper, model is developed to study influences inclination, area ratio, and side hole aspect ratio on steel. The results show that when angle increased from 10° 20°, impact points narrow surface were 0.402 m, 0.476 0.554 m away menis...

In the most application of nozzle with gas-liquid two-phase flow, the quality of mixture in exhaust of nozzle is the most important parameter as well as the flow velocity. On the other hand, in some industrial application, such as water injection in forced induction (turbocharged or supercharged) internal combustion engine the spray quality is the main goal of designing. In this case and for im...