Results 11 to 20 of about 7,612 (306)
Aerospace, 2023 The momentum flux ratio (MFR) significantly affects the mixing characteristics and combustion efficiency of propellants in rocket engine injectors. The spray characteristics of three gas-centered swirl-coaxial injectors used in a full-scale combustion ...
Seongphil Woo +5 more
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Swirled injector modeling for cavitating multiphase flow [PDF]
E3S Web of Conferences, 2019 The goal of this study is to present a comparison between different approaches to multiphase injection modeling of self-pressurized rocket engine propellant. Swirled, tangential orifice injector of nitrous oxide, for an “N” class hybrid rocket motor is the object of the study.
Ziegler Bartosz +2 more
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Determination of the Rheological Model of Gel Propellant and Flow Characterization of Gel in a Pressure Swirl Injector [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2023 Gel propellants have the advantages of both liquid and solid propellants and present a promising future for the aerospace industry. Many gel propellants have shear-thinning behavior, which complicates their behavior in propulsion systems, especially the ...
Ali Saberi Moghaddam +3 more
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Investigation of nozzle geometry and wall roughness effects on diesel injector flow
AIP Advances, 2023 The flow and design of fuel injector nozzles have a considerable influence on the spray and combustion characteristics of a diesel engine. In-cylinder combustion, atomization, and primary breakdown are all highly influenced by the cavitation and ...
Saima Zainab, Khalid Saifullah Syed
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Simulation of the Internal Flow of the High-Pressure Swirl Injector
Journal of Thermal Science and Technology, 2009 The simulation of the internal flow of a kind of high-pressure swirl injector was carried out with multiphase and cavitation models basing on the movement mesh. The spray was also simulated with the result of the internal flow simulation.
Lei FU, Tsuneaki ISHIMA, Wu-qiang LONG
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The spray characteristic of gas-liquid coaxial swirl injector by experiment
MATEC Web of Conferences, 2017 Using the laser phase Doppler particle analyzer (PDPA), the spray characteristics of gas-liquid coaxial swirl injector were studied. The Sauter mean diameter (SMD), axial velocity and size data rate were measured under different gas injecting pressure ...
Chen Chen +5 more
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Three-Dimensional Analysis of Pressure Swirl Injector Based on Trumpet Effects and Orifice Length Variations [PDF]
Iranian Journal of Chemistry & Chemical EngineeringThis research studies the pressure swirl injector’s internal and external flow under adiabatic and incompressible assumptions. A transient three-dimensional flow simulation has been employed.
Adel Makhdoum, Seyed Mahdi Mirsajedi
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Spray characteristics of a multi-hole injector for direct-injection gasoline engines [PDF]
, 2006 The sprays from a high-pressure multi-hole nozzle injected into a constant-volume chamber have been visualized and quantified in terms of droplet velocity and diameter with a two-component phase Doppler anemometry (PDA) system at injection pressures up ...
Arcoumanis, C. +3 more
core +1 more source
Laboratory Investigations of Low-Swirl Injectors Operating With Syngases
Volume 3: Combustion, Fuels and Emissions, Parts A and B, 2008 The low-swirl injector (LSI) is a lean premixed combustion technology that has the potential for adaptation to fuel-flexible gas turbines operating on a variety of fuels. The objective of this study is to gain a fundamental understanding of the effect of syngas on the LSI flame behavior, the emissions and the flowfield characteristics for its ...
Cheng, R.K. +3 more
openaire +2 more sources
Engineering Proceedings, 2023 The air compression ratio in a modern aero engine has been significantly increased to enhance the engine’s thermal efficiency, thereby leading to high-pressure combustion, with the combustor pressure exceeding the fuel’s critical pressure (~23 atm for ...
Dongxin Huang +3 more
doaj +1 more source