An experimental and numerical study of impinging, incompressible, axisymmetric, laminar jets is described, where the jet axis of symmetry is aligned normal to the wall. Particle streak velocimetry (PSV) is used to measure axial velocities along the centerline of the flow field. The jet-nozzle pressure drop is measured simultaneously and determines the Bernoulli velocity. The flow field is simul...

The paper takes a type of flexible air bearing as the research object, and structure is analyzed in detail. Combined with traditional analysis method tilting pad fluid-solid coupling theory, new model for performance prediction was established. inner diameter 70mm calculated by changing input pressure or inlet capillary diameter. optimized analyzing calculation results, separate nozzle added. A...

A quasi one-dimensional analysis of a STOVL aircraft nozzle in hover is performed to estimate the gross thrust coefficient as a function of nozzle pressure and nozzle area ratios. The analysis is supported by subscale, cold flow test results. The nozzle performance was found to be less than desirable in hover due to the overexpansion arising from the geometrical constraints of the existing nozzle.

A numerical investigation of the spray-induced turbulence generated from industrial spray nozzles is carried out to better understand roles nozzle on fires or explosions in different accidental scenarios. Numerical simulations are first validated against experimental data single case using monodisperse and polydisperse assumption for droplet diameters. The polydispersion proven be necessary cor...

The circular-hole rotating core fog nozzle has excellent atomization performance and been widely used in the realm of spray dust. As part this study, a mathematical model was developed for predicting Sauter mean diameter (SMD) nozzles type. coaction between SMD three influencing factors axial distance, water supply pressure, outlet investigated based on customized spray’s experimental platform ...

A thermal plasma process for the synthesis of nanoparticles and their immediate assembly into nanostructured films is discussed. In this process, known as hypersonic plasma particle deposition, a thermal plasma with injected precursors is expanded through a nozzle to nucleate nanoparticles, which are then inertially deposited onto a cooled substrate in vacuum. A lightly consolidated nanostructu...

The progress of food 3D printing (3DP) applications demands a full understanding the behavior materials. Computational fluid dynamics (CFD) simulation can help determine optimum processing conditions for 3DP such as layer height, deposit thickness, volume flow rate, and nozzle shape diameter under varied material properties. This paper mainly discusses application CFD three core processes assoc...