The influence of cavitation on the internal flow and the spray characteristics in diesel injection nozzles

Payri, F.; Bermúdez, Vicente; Payri, Raúl; Salvador, Francisco

doi:10.1016/j.fuel.2003.09.010

Cited by 336 publications

(242 citation statements)

References 18 publications

Supporting

Mentioning

210

Contrasting

Unclassified

Order By: Relevance

“…11 Table 5. On one hand, the results have been compared to the theoretical ones derived from the dimensional analysis and used by several authors such as Wakuri et al [28], Dent [29], Hiroyasu and Arai [30], Naber and Siebers [20], Payri et al [31] or Dernotte et al [32]: all these correlations keep the same exponents for the studied variables. The most significant difference is obtained in the dependence on the spreading angle where the value of the related exponent c varied from 0.09 (from experimental results) to 0.5 (from literature).…”

Section: Discussionmentioning

confidence: 99%

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Payri

Bardi

et al. 2014

Experimental Thermal and Fluid Science

Self Cite

View full text Add to dashboard Cite

In this work, three Engine Combustion Network (ECN) single-hole nozzles with the same nominal characteristics have been tested under a wide range of conditions measuring spray penetration and spreading angle. n-dodecane has been injected in nonevaporative conditions at different injection pressures ranging from 50 to 150 MPa and several levels of ambient densities from 7.6 to 22.8 kg/m 3 . Nitrogen and Sulphur Hexafluoride (SF 6 ) atmospheres have been explored and,in the first case, a temperature sweep from 300 to 550 K at constant gas density has been executed. Mie scattering has been used as the optical technique by employing a fast camera, whereas image processing has been performed through a home-built Matlab code. Differences in spray penetration related to spray orifice diameter, spreading angle and start of injection transient have been found for the three injectors. Significant differenceshave been obtained when changing the ambient gas, whereas ambient temperature hardly affects the spray characteristics up to 400 K. However, a reduction in penetration has been observed beyond this point, mainly due to the sensitivity limitation of the technique as fuel evaporation becomes important. The different behavior observed when injecting in different gases could be explained due to the incomplete momentum transfer between spray droplets and entrained gas, together with the fact that there is an important change in speed of sound for the different gases, which affects the initial stage of the injection.

show abstract

Section: Discussionmentioning

confidence: 99%

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Payri

Bardi

et al. 2014

Experimental Thermal and Fluid Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, it is known from previous experimental studies that the cavitation produces a noticeable increase of the spray spreading angle ( [28][32] [37][38] [39]). …”

Section: Mixing Process Predictionmentioning

confidence: 99%

A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles

Molina

Salvador

Carreres

et al. 2014

Energy Conversion and Management

Self Cite

View full text Add to dashboard Cite

Elsevier Molina, S.; Salvador Rubio, FJ.; Carreres Talens, M.; Jaramillo, D. (2014). A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles. Energy Conversion and Management. 79:114-127. doi:10.1016/j.enconman.2013.12.015. THE INFLUENCE OF THE USE OF ELLIPTICAL ORIFICES ON THE INNER NOZZLE FLOW AND CAVITATION DEVELOPMENT IN DIESEL INJECTOR A COMPUTATIONAL INVESTIGATION ON

show abstract

“…These aspects have been extensively studied for regular diesel fuels due to their strong effect on air-fuel mixing efficiency and combustion development. In this sense, several authors have studied the influence of nozzle geometry and fuel properties on internal nozzle flow characteristics [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, flow characteristics at the nozzle exit have been shown to determine spray behavior, both under evaporative and non-evaporative conditions [10][11][12][13]. It is expected that the use of fuels with different properties would have significant effect in the air-fuel mixing process and combustion behavior.…”

Section: Introductionmentioning

confidence: 99%

Consequences of using biodiesel on the injection and air–fuel mixing processes in diesel engines

Salvador

Ruíz

Salavert

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

A study of the injection process and spray behavior has been made for three different fuels. In particular, blends of rapeseed methyl ester (RME) with standard diesel fuel at 5% and 30% of biodiesel have been used for the current study, as well as pure RME.Hydraulic characterization of an 8-hole nozzle has been carried out using these three fuels, in order to explore and analyze the influence of fuel properties on mass flow rate and momentum flux at the nozzle exit. Additionally, spray visualization tests have been made in order to get information about spray cone angle, which allows the characterization of air-fuel mixing process. Finally, a theoretical derivation has been used to obtain further details of the microscopic characteristics of the spray and compare air-fuel mixing efficiency for the different biodiesel blends.

show abstract

The influence of cavitation on the internal flow and the spray characteristics in diesel injection nozzles

Cited by 336 publications

References 18 publications

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

Engine combustion network: Influence of the gas properties on the spray penetration and spreading angle

A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles

Consequences of using biodiesel on the injection and air–fuel mixing processes in diesel engines

Contact Info

Product

Resources

About