Topic
Nozzle
About: Nozzle is a research topic. Over the lifetime, 158675 publications have been published within this topic receiving 893026 citations. The topic is also known as: spout.
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TL;DR: In this article, the powder flow structures of a coaxial nozzle for laser cladding were simulated by the numerical program FLUENT with various arrangements of the nozzle exit, and it was found that the concentration mode is influenced significantly by the nozzle arrangement and gas flow settings.
93 citations
TL;DR: In this paper, two optical measuring techniques have been investigated, Particle Image Velocimetry (PIV) and phase Doppler anemometry (PDA), for the measurement of droplet velocities and droplet size.
93 citations
TL;DR: In this paper, the Stokes number is adjusted to take into account the effect of an apparent change in nozzle diameter due to misalignment of the nozzle to the flow stream.
93 citations
TL;DR: Convective heat transfer for turbulent boundary layer flow through cooled convergent-divergent nozzle was investigated in this paper, where the authors used a cooling convergent divergent nozzle.
93 citations
TL;DR: In this article, an in-depth investigation of the Hartmann tube (HT) was carried out to gain a better understanding of and the effects of various parameters on its output flow characteristics.
Abstract: An in-depth investigation of the Hartmann tube (HT) was carried out to gain a better understanding of and the effects of various parameters on its output flow characteristics. The HT used in this work consisted of an underexpanded jet directed into a close-ended cylindrical tube of the same diameter. The effects of tube depth, separation distance between the tube and the nozzle, and the jet Mach number were explored. Experiments were also performed on an HT fluidic actuator (HTFA). The HTFA operates under the same principles as the HT, except a major portion of the area between the nozzle and tube is shielded off, so that it can be used as a pulsating injector for flow control. Dynamic pressure measurements in the near field and microphone measurements in the far field provided temporal and spectral data. Instantaneous and phase-averaged images of the flow were obtained to explore the nature of turbulence structures within the flow. Limited hot-wire measurements were performed to characterize the velocity fluctuations at the exit of the HTFA
92 citations