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Relevant bibliographies by topics / Spray combustion environment

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Journal articles

Academic literature on the topic 'Spray combustion environment'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Spray combustion environment"

1

Desantes, Jose M., Jose M. Garcia-Oliver, Ricardo Novella, and Leonardo Pachano. "A numerical study of the effect of nozzle diameter on diesel combustion ignition and flame stabilization." International Journal of Engine Research 21, no. 1 (2019): 101–21. http://dx.doi.org/10.1177/1468087419864203.

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The role of nozzle diameter on diesel combustion is studied by performing computational fluid dynamics calculations of Spray A and Spray D from the Engine Combustion Network. These are well-characterized single-hole sprays in a quiescent environment chamber with thermodynamic conditions representative of modern diesel engines. First, the inert spray evolution is described with the inclusion of the concept of mixing trajectories and local residence time into the analysis. Such concepts enable the quantification of the mixing rate, showing that it decreases with the increase in nozzle diameter.

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2

Jafarmadar, Samad, Shram Khalilarya, Sina Shafee, and Ramin Barzegar. "Modeling the effect of spray/wall impingement on combustion process and emission of DI diesel engine." Thermal Science 13, no. 3 (2009): 23–33. http://dx.doi.org/10.2298/tsci0903023j.

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This work is presented to study the effect of spray impinging on the combustion process and emissions in a direct injection diesel engine at various engine speeds. Computations are carried out using a three-dimensional modeling for sprays, spray-wall interactions, flow field, emission, and combustion process. Results indicate an increase in engine speed leads to increased spray impinging (wall film formation), turbulence intensity and average wall temperature in cylinder. The enhanced air/fuel mixing and intensified evaporation of wall film decreases soot emission by reducing the extent of the

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3

Arai, Masataka. "Interpretative Review of Diesel Spray Penetration Normalized by Length and Time of Breakup (Similarity Law of Diesel Spray and Its Application)." Energies 15, no. 13 (2022): 4926. http://dx.doi.org/10.3390/en15134926.

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Tip penetration of diesel spray is one of the most useful parameters to evaluate diesel combustion dynamics. It has strong relationships with ignition delay, premix/diffusion combustion and engine performance, including exhaust emissions. To discuss general combustion physics in various size sprays, non-dimensional expression of spray tip penetration is reviewed. Length and time of injected fuel jet breakup can be considered as characteristic length and timescale of diesel spray. Then, normalized penetration by length and time of breakup was proposed for the scaling of various diesel sprays. U

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4

Liu, Yu, Jun Li, Ying Gao, and Xin Mei Yuan. "Laser Diagnostic Investigation on the Spray and Combustion with Butanol-Biodiesel-Diesel Fuel Blends." Advanced Materials Research 443-444 (January 2012): 986–95. http://dx.doi.org/10.4028/www.scientific.net/amr.443-444.986.

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. In this paper, blends of butanol-biodiesel-diesel were tested inside a constant volume chamber to investigate liquid spray and combustion of the fuels. With high-speed camera and synchronized copper vapor laser, spray penetration during injection is recorded since it has a higher light reflectivity. Various ambient temperatures and fuel composition were investigated. There is a sudden drop in spray penetration at 800 K and 900 K, but not at 1000 K and 1200 K. When the spray penetration of the butanol-biodiesel-diesel blends is compared to that of the biodiesel-diesel blends, under non-combus

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5

Chung, Wai Tong, Peter C. Ma, and Matthias Ihme. "Examination of diesel spray combustion in supercritical ambient fluid using large-eddy simulations." International Journal of Engine Research 21, no. 1 (2019): 122–33. http://dx.doi.org/10.1177/1468087419868388.

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High-pressure conditions in diesel engines can often surpass the thermodynamic critical limit of the working fluid. Consequently, the injection of fuel at these conditions can lead to complex behaviors that remain only incompletely understood. This study is concerned with investigating the application of a diffuse-interface method in conjunction with a finite-rate chemistry model in large-eddy simulations of diesel spray injection and ignition in a supercritical ambient environment. The presented numerical approach offers the capability of simulating these complex conditions without the need f

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6

Xuan, Tiemin, Zhongcheng Sun, Peng Lu, et al. "Optical study on needle lift and its effects on reacting diesel sprays of a single-hole solenoid injector." Thermal Science, no. 00 (2020): 289. http://dx.doi.org/10.2298/tsci190925289x.

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Precise control of needle lift provides one possibility to control the Diesel spray and combustion process actively. However, most studies of needle lift focus on internal flow or near nozzle spray. Little work has been performed on its effects on reacting spray. In this work, one way to change the needle lift profile of a solenoid injector has been developed and the relationship between needle lift and reacting spray has been investigated. The needle movement was detected with an optical nozzle. In addition, the visualization of reacting sprays of the same injector equipped with a single-hole

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7

Luo, Meng, Pingping Zhu, Usman Rana, Hu Ma, Zhendong Yu, and Oskar J. Haidn. "Modeling Investigation of Liquid Oxygen Flashing Spray with CFD." Journal of Physics: Conference Series 2235, no. 1 (2022): 012061. http://dx.doi.org/10.1088/1742-6596/2235/1/012061.

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Abstract Injection of cryogenic propellants (e.g. liquid oxygen) into low-pressure environment (e.g. upper-stage rocket engine) may trigger flashing phenomenon, which severely affects the propellants’ mixing and combustion. In order to unveil the characteristics of flashing sprays, numerical models of flashing sprays were developed and validated. First, a developed model based on Adachi-correlation was employed for the flashing spray simulation. The results show good agreements with the experiments, both for the flashing spray morphology and temperature distribution. In the near-injector regio

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8

Li, Zhijie, Jie Pan, Wei Li, Xiangting Wang, Haiqiao Wei, and Jiaying Pan. "New Insights into Abnormal Combustion Phenomena Induced by Diesel Spray-Wall Impingement under Engine-Relevant Conditions." Energies 15, no. 8 (2022): 2941. http://dx.doi.org/10.3390/en15082941.

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High altitude and low temperature is the common extreme environment for internal combustion engines. Under such operating conditions, heavy-duty diesel engines often suffer from serious abnormal combustion, such as knocking combustion, which results in piston crown breakdown and cylinder head erosion. Spray-wall impingement and pool fires are considered potential causes; however, the detailed mechanism remains poorly understood owing to the lack of research data. In this study, for the first time, the destructive abnormal combustion induced by diesel spray-wall impingement was identified using

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9

Raghu, P., K. Thilagan, M. Thirumoorthy, Siddharth Lokachari, and N. Nallusamy. "Spray Characteristics of Diesel and Biodiesel in Direct Injection Diesel Engine." Advanced Materials Research 768 (September 2013): 173–79. http://dx.doi.org/10.4028/www.scientific.net/amr.768.173.

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Alternative fuels for diesel engines are becoming important due to the decrease of petroleum reservoirs and the increase of environment pollution problems. The biodiesel is technically competitive with conventional petroleum-derived diesel fuel and requires no changes in the fuel distribution system. Injection process of biodiesel influences the atomization and dispersion of fuel in the combustion chamber. In diesel Engine different tests have been performed to improve the efficiency in cycle, power, less emission, speed, etc. There are various methods of visualizing the combustion chamber in

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10

Duronio, Francesco, Angelo De De Vita, Alessandro Montanaro, and Luigi Allocca. "Experimental Investigation and Numerical CFD Assessment of a Thermodynamic Breakup Model for Superheated Sprays with Injection Pressure up to 700 Bar." Fluids 8, no. 5 (2023): 155. http://dx.doi.org/10.3390/fluids8050155.

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Among the most relevant fields of research recently investigated for improving the performance of gasoline direct injection (GDI) engines, there are ultrahigh injection pressures and the flash-boiling phenomenon. Both perform relevant roles in improving the air/fuel mixing process, reducing tailpipe emissions and implementing new combustion methods. When a high-temperature fuel is released into an environment with a pressure lower than the fuel’s saturation pressure, flash boiling occurs. Due to complex two-phase flow dynamics and quick droplet vaporization, flash boiling can significantly mod

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