Effect of fuel temperature on cavitation flow inside vertical multi-hole nozzles and spray characteristics with different nozzle geometries

2018 ◽  
Vol 91 ◽  
pp. 374-387 ◽  
Author(s):  
Xin Zhang ◽  
Zhixia He ◽  
Qian Wang ◽  
Xicheng Tao ◽  
Zhen Zhou ◽  
...  
Keyword(s):  
Cavitation Flow ◽  
Fuel Temperature ◽  
Spray Characteristics ◽  
Nozzle Geometries

The Effect of Fuel Temperature on the Ethanol Direct Injection Spray Characteristics of a Multi-hole Injector

2014 ◽  
Vol 7 (3) ◽  
pp. 792-802 ◽  
Author(s):  
Yuhan Huang ◽  
Sheng Huang ◽  
Peng Deng ◽  
Ronghua Huang ◽  
Guang Hong
Keyword(s):  
Direct Injection ◽  
Fuel Temperature ◽  
Spray Characteristics

Effect of Initial Fuel Temperature on Spray Characteristics of Multicomponent Fuel

2020 ◽  
Author(s):  
Daisuke Kawano ◽  
Kentaro Tsukiji ◽  
Hiroki Saito ◽  
Dai Matsuda ◽  
Eriko Matsumura ◽  
...  
Keyword(s):  
Fuel Temperature ◽  
Spray Characteristics ◽  
Initial Fuel

scholarly journals Effects of Nozzle Shape on the Flow Characteristics of Premix Injector Using Computational Fluid Dynamics (CFD)

2015 ◽  
Vol 773-774 ◽  
pp. 450-454
Author(s):  
Ronny Yii Shi Chin ◽  
Shahrin Hisham Amirnordin ◽  
Amir Khalid
Keyword(s):  
Flow Characteristics ◽  
Fuel Injector ◽  
Spray Characteristics ◽  
Hole Shape ◽  
Injector Nozzle ◽  
K Factor ◽  
Efficient Combustion ◽  
Nozzle Hole ◽  
Nozzle Geometries ◽  
Air Nozzle

The burner system is a patented, unique, higher-efficiency and fuel-injector system that works with a specially designed oil burner to create ultra-efficient combustion that reduces oil use, greenhouse gases and other harmful emissions. This research shows the injector nozzle geometries play a significant role in spray characteristics, atomization and formation of fuel-air mixture in order to improve combustion performance, and decrease some pollutant products from burner system. The aim of this research is to determine the effects of nozzle hole shape on spray characteristics of the premix injector by using CFD. Multiphase of volume of fluid (VOF) cavitating flow inside nozzles are determined by means of steady simulations and Eulerian-Eulerian two-fluid approach is used for performing mixing of Jatropha oil and air. Nozzle flow simulations resulted that cavitation area is strongly dependent on the nozzle hole shape. Conical hole with k-factor of 2 provides higher flow velocity and turbulent kinetic energy compared with conical hole with k-factor of 1.3 and cylindrical hole. The results show that the premix injector nozzle hole shape gives impact to the spray characteristics and indirectly affects the emission of the system.

Comparison of spray characteristics of gasoline and water-in-gasoline mixture at elevated fuel temperature conditions

Fuel ◽  
2021 ◽  
Vol 304 ◽  
pp. 121409
Author(s):  
Zhijun Wu ◽  
Wei Xie ◽  
Yang Yu ◽  
Liguang Li ◽  
Jun Deng
Keyword(s):  
Fuel Temperature ◽  
Spray Characteristics ◽  
Temperature Conditions

Experimental Investigations of Spray Characteristics of a Pressure-Swirl Atomizer

2019 ◽  
Vol 234 (5) ◽  
pp. 643-654 ◽  
Author(s):  
Xiongjie Fan ◽  
Cunxi Liu ◽  
Yong Mu ◽  
Haitao Lu ◽  
Jinhu Yang ◽  
...  
Keyword(s):  
Surface Wave ◽  
Liquid Film ◽  
Fuel Temperature ◽  
Spray Characteristics ◽  
Spray Cone ◽  
Breakup Length ◽  
Swirl Atomizer ◽  
Pressure Swirl ◽  
The Impact ◽  
Pressure Swirl Atomizer

Spray characteristics of a pressure-swirl atomizer are investigated using high-speed shadowgraph technique under different pressure drops (Δ P) and fuel temperatures ( T). An image processing method is developed using MATLAB. The results illustrate that the mass flow rate climbs with the increase of Δ P, while the discharge coefficient ( Cd) decreases firstly and then climbs with the increase of Δ P. Δ P has larger effect on the cone angle relative to fuel temperature. With the increase of Δ P, the shape of liquid film changes from ‘onion’ to ‘tulip’ and finally be fully developed spray cone. Meanwhile, the surface of liquid film becomes smoother with the increase of Δ P. The average breakup length climbs, then decreases to nearly a constant value with the increase of Δ P, which is induced by the “Impact wave,” surface wave, and turbulent energy. There are little differences on the shape of the liquid film under different temperatures, and temperature has different influence on breakup length under different Δ P. Both the fuel temperature and Δ P have significant impact on the surface wavelength ( λ) and velocities ( U, V) of surface wave. The width of fuel stream becomes larger with the increase of Δ P and fuel temperature. The results can further deepen the understanding of spray characteristics of pressure-swirl atomizer.

Diesel nozzle geometries on spray characteristics with a spray model coupled with nozzle cavitating flow

2015 ◽  
Vol 16 (4) ◽  
pp. 539-549 ◽  
Author(s):  
F. Wang ◽  
Z. He ◽  
J. Liu ◽  
Q. Wang
Keyword(s):  
Cavitating Flow ◽  
Spray Characteristics ◽  
Diesel Nozzle ◽  
Nozzle Geometries

scholarly journals Numerical simulation of the influence of fuel temperature and injection parameters on biodiesel spray characteristics

2019 ◽  
Vol 8 (2) ◽  
pp. 312-326 ◽  
Author(s):  
Limin Geng ◽  
Yanjuan Wang ◽  
Jue Wang ◽  
Youtao Wei ◽  
Chia‐fon F. Lee
Keyword(s):  
Numerical Simulation ◽  
Fuel Temperature ◽  
Spray Characteristics ◽  
Injection Parameters

scholarly journals An Experimental Study on Spray Characteristics of Directly Injected Bio-Ethanol-Gasoline Blended Fuel By Varying Fuel Temperature

2014 ◽  
Vol 25 (6) ◽  
pp. 636-642 ◽  
Author(s):  
Seangwook Lee ◽  
Giyoung Park ◽  
Jongmin Kim ◽  
Bongkyu Park
Keyword(s):  
Experimental Study ◽  
Fuel Temperature ◽  
Spray Characteristics ◽  
Blended Fuel
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