Results 21 to 30 of about 198,480 (259)

Distribuição volumétrica de calda produzidas pelas pontas pulverização XR, TP e TJ sob diferentes condições operacionais Volumetric distribution of the spray nozzle tips XR, TP and TJ under different operational conditions

open access: yesPlanta Daninha, 2004
Foram avaliados os perfis de distribuição volumétrica das pontas de pulverização de jato plano "Extended Range" XR 8004, "Teejet" TP 8004 e "TwinJet" TJ60-8004, em mesa de teste construída segundo a norma ISO 5.682-1:1996, sendo as pontas de pulverização
F.C. Bauer, C.G. Raetano
doaj   +1 more source

Modeling of underexpanded hydrogen jets through square and rectangular slot nozzles

open access: yesInternational journal of hydrogen energy, 2019
The development and revision of safety codes and standards for hydrogen infrastructure requires a solid scientific basis, including studies of unignited releases from high pressure systems for various scenarios.
Xuefang Li   +7 more
semanticscholar   +1 more source

Numeric comparative study on Advanced Nozzles in subsonic counter-flows [PDF]

open access: yes, 2023
openAl giorno d'oggi, la stragrande maggioranza dei razzi regolarmente commercializzati impiega convenzionali ugelli a campana, i quali si stanno avvicinando ai loro limiti di ottimizzazione.
GARUTTI, MARCO
core  

A Comparative Study of Nozzle/Diffuser Micropumps with Novel Valves

open access: yesMolecules, 2012
This study conducts an experimental study concerning the improvement of nozzle/diffuser micropump design using some novel no-moving-part valves. A total of three micropumps, including two enhancement structures having two-fin or obstacle structure and ...
Jin-Cherng Shyu   +4 more
doaj   +1 more source

Active aerodynamics control of simplified vehicle body in a crosswind condition

open access: yesThe Journal of Engineering, 2020
In this study, the authors used a steady jet from a slit nozzle to control the bi-stable aerodynamics of a simple vehicle model under crosswind conditions.
Takuji Nakashima   +6 more
doaj   +1 more source

Improving Homogeneity of 3D-Printed Cementitious Material Distribution for Radial Toolpath

open access: yesFluids, 2023
The 3D cementitious material printing method is an extrusion-based additive manufacturing strategy in which cementitious materials are extruded through a dynamic nozzle system to form filaments.
Mingyang Li   +3 more
doaj   +1 more source

Numerical Analysis of Nozzle Flow and Spray Characteristics from Different Nozzles Using Diesel and Biofuel Blends

open access: yesEnergies, 2019
In this paper, the discrete phase model (DPM) was introduced to study the fuel injector cavitations process and the macro spray characteristic of three different types of nozzle spray shape with diesel and hybrid biofuel blend for several injection ...
M. Ishak   +5 more
semanticscholar   +1 more source

Research on airflow uniformity of marine selective catalytic reduction reverse blow system

open access: yesThe Journal of Engineering, 2019
In order to improve the working performance of the ceramic catalyst filter, a model of nozzle blowback was designed to change the nozzle diameter. The blowback tube blowback model with variable diameter and the blowback blowback model with equal diameter
Man Wang, Hongpeng Zhang, Wenke Gong
doaj   +1 more source

Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles

open access: yesExperimental Thermal and Fluid Science, 2019
For the simplicity of optical diagnostics, studies on fuel spray and combustion characteristics of modern diesel engines have been conducted using the investigation nozzles having the reduced number of holes (two- or three-hole nozzles) compared to the ...
Weidi Huang   +5 more
semanticscholar   +1 more source

Flow Separation in Rocket Nozzles, a Simple Criteria

open access: yes, 2005
Cold and hot flow tests were conducted to investigate the flow separation in rocket nozzles. The results are presented. A separation data base including a wide range of literature data is established to evaluate the influence of propellant combination ...
Ralf Stark, Stark, Ralf
core   +1 more source

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