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 study of cavitating flow in orifices and its effect on spray characteristics

2018 ◽  
Vol 30 (5) ◽  
pp. 908-919
Author(s):  
Morteza Ghorbani
Keyword(s):  
Numerical Study ◽  
Cavitating Flow ◽  
Spray Characteristics

Numerical investigation on transient internal cavitating flow and spray characteristics in a single-hole diesel injector nozzle: A 3D method for cavitation-induced primary break-up

Fuel ◽  
2018 ◽  
Vol 233 ◽  
pp. 778-795 ◽  
Author(s):  
Donghua Li ◽  
Shenghua Liu ◽  
Yanju Wei ◽  
Renzhi Liang ◽  
Yonghong Tang
Keyword(s):  
Numerical Investigation ◽  
Cavitating Flow ◽  
Spray Characteristics ◽  
Single Hole ◽  
Injector Nozzle ◽  
Break Up ◽  
Primary Break

K-2013 Effect of Nozzle Hole Flow Coefficient on Spray Characteristics of Diesel Nozzle

2001 ◽  
Vol II.01.1 (0) ◽  
pp. 513-514
Author(s):  
Kiyomi KAWAMURA ◽  
Norikazu KATSUMI ◽  
Reiko UEDA ◽  
Kiyomi NAKAKITA ◽  
Akinori SAITO ◽  
...  
Keyword(s):  
Flow Coefficient ◽  
Spray Characteristics ◽  
Diesel Nozzle ◽  
Nozzle Hole

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.

Influence of Internal Cavitating Flow of the Nozzle on Spray Characteristics in a Diesel Engine

2012 ◽  
Vol 468-471 ◽  
pp. 1874-1877
Author(s):  
Ju Yan Liu ◽  
Zhi Xia He ◽  
Qian Wang ◽  
Zhao Chen Jiang ◽  
Li Li Tian
Keyword(s):  
Diesel Engines ◽  
Optimization Design ◽  
Theoretical Foundation ◽  
Cavitating Flow ◽  
Fuel Spray ◽  
Sauter Mean Diameter ◽  
Spray Characteristics ◽  
Fuel Atomization ◽  
Different Types ◽  
Nozzle Hole

Fuel atomization and penetration are known to significantly affect the combustion and emission processes in diesel engines. In the fuel supply system of diesel engines, the internal cavitaing flow of the nozzle is one of the most important effects on fuel spray characteristics. So it is necessary to simulate fuel spray coupling with internal cavitaing flow of the nozzle. In order to analyze the influence of cavitaing flow in the nozzle hole on spray, a coupling spray simulation was carried out with the output data of cavitaing flow in nozzles using FIRE v2010. The results of this work show that the characteristics of cavitating flow in orifice have an effect on both macroscopic properties, such as spray tip penetration and spray symmetry, and microscopic properties, like Sauter Mean Diameter-SMD. Moreover, the spray characteristics from three different types of nozzle were simulated to study the effect of nozzle structure on internal cavitating flow and subsequent spray, which supplies the theoretical foundation for the optimization design of the injector.

Experimental characterization of outlet flow for different diesel nozzle geometries

2005 ◽  
Author(s):  
José M. Desantes ◽  
Jean Arrègle ◽  
J. Javier López ◽  
Sjoerd Hermens
Keyword(s):  
Experimental Characterization ◽  
Diesel Nozzle ◽  
Outlet Flow ◽  
Nozzle Geometries

Influence of Cylindrical, k, and ks Diesel Nozzle Shape on the Injector Internal Flow Field and on the Emerging Spray Characteristics

2014 ◽  
Author(s):  
Federico Brusiani ◽  
Gian Marco Bianchi ◽  
Stefania Falfari ◽  
Angelo Onorati ◽  
Tommaso Lucchini ◽  
...  
Keyword(s):  
Flow Field ◽  
Internal Flow ◽  
Spray Characteristics ◽  
Diesel Nozzle ◽  
Nozzle Shape

NUMERICAL INVESTIGATION ON EFFECTS OF ELLIPTICAL DIESEL NOZZLE ON PRIMARY SPRAY CHARACTERISTICS BY LARGE EDDY SIMULATION (LES)

2018 ◽  
Vol 28 (8) ◽  
pp. 695-712
Author(s):  
Shenghao Yu ◽  
Bifeng Yin ◽  
Weixin Deng ◽  
Hekun Jia ◽  
Ze Ye ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Numerical Investigation ◽  
Spray Characteristics ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Diesel Nozzle

Experimental study on the spray characteristics discharging from elliptical diesel nozzle at typical diesel engine conditions

Fuel ◽  
2018 ◽  
Vol 221 ◽  
pp. 28-34 ◽  
Author(s):  
Shenghao Yu ◽  
Bifeng Yin ◽  
Weixin Deng ◽  
Hekun Jia ◽  
Ze Ye ◽  
...  
Keyword(s):  
Experimental Study ◽  
Diesel Engine ◽  
Spray Characteristics ◽  
Diesel Nozzle
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