Experimental Investigation of Effects of Graphene Nano Particles (GNP) on the Combustion Behaviors of Renewable Jet Fuel Droplets

2021 ◽  
Author(s):  
ASM Sazzad Parveg ◽  
Gurjap Singh ◽  
Albert Ratner
Keyword(s):  
Experimental Investigation ◽  
Jet Fuel ◽  
Nano Particles ◽  
Fuel Droplets ◽  
Combustion Behaviors

Experimental Investigation of Effects of Graphene Nano Particles (GNP) on the Combustion Behaviors of Renewable Jet Fuel Droplets

2020 ◽  
Author(s):  
A. S. M. Sazzad Parveg ◽  
Gurjap Singh ◽  
Albert Ratner
Keyword(s):  
Combustion Rate ◽  
Ignition Delay ◽  
Jet Fuel ◽  
Nano Particles ◽  
Jet Fuels ◽  
Combustion Time ◽  
Combustion Behaviors ◽  
The Impact ◽  
Mass Concentrations ◽  
Carbon Based

Abstract Due to the impact of fossil fuel use on the environment, renewable jet fuel has been pursued as an alternative fuel for aircraft engines. Several renewable jet fuels are developed with minimal carbon footprint and pollutants emission to replace petroleum jet fuels. To modify certain combustion behaviors such as combustion rate, ignition delay and total combustion time, colloidal suspension of carbon-based nanoparticles to liquid fuels has proven to be an effective mechanism. But the influence of carbon-based nanoparticles on the combustion behaviors of renewable jet fuels at different concentrations has not yet been investigated. Researchers have been exploring ways to modify the combustion performances of renewable jet fuel, and in this work, the addition of carbon-based nanoparticles (Graphene Nano Particles) is examined as a potential performance enhancing additive for fuel transport safety. The effects of Graphene Nano Particles (GNP) on the ignition and combustion characteristics of soy oil and canola oil based renewable jet fuel at different mass concentrations (1%, 2% & 3%) loading are investigated in this manuscript. The impact of different mass concentrations loading of GNP on the combustion behavior is analyzed by post-processing the high-speed images. It is observed that the ignition delay decreased by 8.52% and combustion rate decreased by 7.26% for renewable jet fuel at 3% GNP loading. GNP also caused a maximum decrease of total combustion time by 13.61% at 3% loading. It is expected that this study will drive further interest in fuel characteristics improvement of renewable jet fuel and will provide experimental data for future computational modeling.

EXPERIMENTAL INVESTIGATION OF THE FUEL DROPLETS EVAPORATION FOR BLENDED FUELS

2018 ◽  
Author(s):  
Thiago Augusto Michels ◽  
João Fabrício Manoel ◽  
Roberto Wolf Francisco Jr.
Keyword(s):  
Experimental Investigation ◽  
Fuel Droplets ◽  
Blended Fuels

Trapezoidal traction–separation laws in mode II fracture in nano-composite and nano-adhesive joints

2018 ◽  
Vol 37 (11) ◽  
pp. 780-794 ◽  
Author(s):  
P Ghabezi ◽  
M Farahani
Keyword(s):  
Experimental Investigation ◽  
Data Reduction ◽  
Beam Theory ◽  
Calibration Method ◽  
Adhesive Joints ◽  
Nano Particles ◽  
Mode Ii ◽  
Nano Composite ◽  
Mode Ii Fracture ◽  
Beam Method

The main focus of this paper is on the experimental investigation and comparison between different bridging laws. For mode II fracture in the presence of nano-particles, these laws are calculated from three data reduction schemes for describing the bridging zone and trapezoidal traction–separation law parameters. For the calculation of the energy release rate in mode II fracture, three corresponding data reduction schemes, compliance calibration method, corrected beam theory and compliance-based beam method, have been utilized for different percentages of nano-particles in the adhesives and the adherents.

Effect of temperature and pressure on cavitation characteristics in RP-3 jet fuel

2021 ◽  
pp. 2150375
Author(s):  
Chao Qiu ◽  
Shuxian Chen ◽  
Feng Yan ◽  
Yaoming Fu ◽  
Wuguo Wei
Keyword(s):  
Cavitation Erosion ◽  
Engine Performance ◽  
Jet Fuel ◽  
Effect Of Temperature ◽  
Fuel System ◽  
Fuel Temperature ◽  
Fuel Droplets ◽  
Aircraft Fuel ◽  
Different Temperatures ◽  
Temperature And Pressure

Cavitation usually appears in aircraft fuel system, which is significant for the operation of engine. Uncontrollable cavitation will cause cavitation erosion to the units of fuel system, while the controllable cavitation can enhance the turbulence of fuel and improve the engine performance. This work along with molecular dynamics was used to simulate the cavitation in RP-3 jet fuel with different temperatures and pressures. The influence of fuel temperature and pressure on cavitation characteristics was studied. It is indicated that the higher the temperature is, the more easily the RP-3 jet fuel cavitate. Furthermore, the influence of pressure on cavitation can be divided into two periods. The lower the fuel pressure is, the faster the occurrence and development of cavitation in RP-3 jet fuel. When the temperature and pressure of the RP-3 jet fuel are set at the region between the line [Formula: see text] and [Formula: see text]%, the cavitation erosion can be almost ignored, and the dispersion of fuel droplets is almost the best.

Effect of Diluent on the Blowout Limits of Jet Diffusion Flames

2001 ◽  
Author(s):  
N. Papanikolaou ◽  
I. Wierzba ◽  
V. W. Liu
Keyword(s):  
Carbon Dioxide ◽  
Experimental Investigation ◽  
Flow Field ◽  
Diffusion Flames ◽  
Jet Fuel ◽  
Field Structure ◽  
Jet Diffusion Flames ◽  
Air Stream ◽  
Lifted Flames

Abstract The paper will describe the results of an experimental investigation on the effect of diluents premixed with either the jet or co-flowing air stream on the blowout limits and flow field structure of jet diffusion flames. Experiments were conducted for a range of co-flowing air stream velocities with methane as the primary jet fuel, and nitrogen and carbon dioxide as diluents in the jet fuel; carbon dioxide was also used in the co-flowing air stream. The addition of a diluent to the surrounding air stream had a much stronger effect on the blowout limits than the addition of the diluent to the jet fuel. The effect of partially premixing air with the jet fuel on the blowout limits was also investigated. The addition of air (to up to 30%) to the methane jet significantly reduced the blowout limits of lifted flames, but it had little effect on the blowout limits of attached flames, which was rather unexpected.

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