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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors investigated the effect of the turbine's structural configuration on the performance and internal flow characteristics of the cross-flow turbine model using CFD analysis and found that the turbine runner's shape, angle, and number of runners are closely related to turbine performance.
Abstract: Recently, small hydropower attracts attention because of its clean, renewable and abundant energy resources to develop. Therefore, a cross-flow hydraulic turbine is proposed for small hydropower in this study because the turbine has relatively simple structure and high possibility of applying to small hydropower. The purpose of this study is to investigate the effect of the turbine's structural configuration on the performance and internal flow characteristics of the cross-flow turbine model using CFD analysis. The results show that nozzle shape, runner blade angle and runner blade number are closely related to the performance and internal flow of the turbine. Moreover, air layer in the turbine runner plays very important roles of improving the turbine performance.
85 citations
TL;DR: In this paper, a computer code nozzle in n-temperatures (NOZNT) was proposed to calculate one-dimensional flows of partially dissociated and ionized air in an expanding nozzle.
Abstract: A computer code nozzle in n-temperatures (NOZNT), which calculates one-dimensional flows of partially dissociated and ionized air in an expanding nozzle, is tested against three existing sets of experimental data taken in arcjet wind tunnels. The code accounts for the differences among various temperatures, i.e., translational-rotational temperature, vibrational temperatures of individual molecular species, and electron-electronic temperature, and the effects of impurities. The experimental data considered are (1) the spectroscopic emission data; (2) electron beam data on vibrational temperature; and (3) mass-spectrometric species concentration data. It is shown that the impurities are inconsequential for the arcjet flows, and the NOZNT code is validated by numerically reproducing the experimental data.
85 citations
TL;DR: In this article, the phase doppler anemometry (PDA) was used to characterize the lubricant spray under different input pressure for various nozzle outlet diameter of 2.5mm and 3.0mm.
85 citations
TL;DR: In this article, a new combination of Large Eddy Simulation (LES), Eulerian-Lagrangian Bubble Tracking Method (BTM), and the Rayleigh-Plesset (RP) equation is proposed to simulate an incipient cavitation, in which only cavitation bubble clouds appear.
85 citations
Patent•
29 Apr 2004
TL;DR: In this article, a bottom-up electrospinning device is proposed, where the outlets of nozzles 5 installed on a nozzle block 4 are formed in an upper direction, a collector 7 is located on the top part of the nozzle block 5 and overflow removing nozzels 4a and air feeding nozzle 4b are sequentially installed around nozzle outlets.
Abstract: A conventional electrospinning devices is problematic in that it is unable to mass-produce a nanofiber web and the quality of a produced nanofiber web is poor. To solve the above problem, the present invention provides a bottom-up electrospinning devices, wherein [I] the outlets of nozzles 5 installed on a nozzle block 4 are formed in an upper direction; [II] a collector 7 is located on the top part of the nozzle block 4; and [III] overflow removing nozzles 4a and air feeding nozzles 4b are sequentially installed around nozzle outlets.
85 citations