Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections

Sphicas, Panos; Pickett, Lyle M.; Skeen, S. A.; Frank, J. H.; Parrish, S.

doi:10.1615/AtomizSpr.2018025956

Title: Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections

Abstract

The collapse or merging of individual plumes of direct-injection gasoline injectors is of fundamental importance to engine performance because of its impact on fuel-air mixing. However, the mechanisms of spray collapse are not fully understood. The purpose of this work is to study the effects of injection duration and multiple injections on the interaction and/or collapse of multi-plume GDI sprays. High-speed (100 kHz) Particle Image Velocimetry (PIV) is applied along a plane between plumes to observe the full temporal evolution of plume-interaction and potential collapse, resolved for individual injection events. Supporting information along a line of sight is obtained using Diffused Back Illumination (DBI). Experiments are performed under simulated engine conditions using a symmetric 8-hole injector in a high-temperature, high-pressure vessel at the "Spray G" operating conditions of the Engine Combustion Network (ECN). Longer injection duration is found to promote plume collapse, while staging fuel delivery with multiple, shorter injections is resistant to plume collapse.

Authors:

Sphicas, Panos ^[1]; Pickett, Lyle M. ^[2]; Skeen, S. A. ^[2]; Frank, J. H. ^[2]; Parrish, S. ^[3]

Prince Mohammad Bin Fahd Univ., Al Khobar (Saudi Arabia)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
General Motors Global R&D, Warren, MI (United States)

Publication Date:: Mon Jan 01 00:00:00 EST 2018

Research Org.:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1526912

Report Number(s):: SAND-2019-6452J
Journal ID: ISSN 1044-5110; 676140

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: Atomization and Sprays

Additional Journal Information:: Journal Volume: 28; Journal Issue: 9; Journal ID: ISSN 1044-5110

Publisher:: Begell House

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; PIV; DBI; spray; collapse; multiple injections; injection duration

Citation Formats


                    Sphicas, Panos, Pickett, Lyle M., Skeen, S. A., Frank, J. H., and Parrish, S. Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections.  United States: N. p., 2018. 
Web.  doi:10.1615/AtomizSpr.2018025956.

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                    Sphicas, Panos, Pickett, Lyle M., Skeen, S. A., Frank, J. H., & Parrish, S. Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections.  United States.  https://doi.org/10.1615/AtomizSpr.2018025956

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                    Sphicas, Panos, Pickett, Lyle M., Skeen, S. A., Frank, J. H., and Parrish, S. Mon .  
"Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections".  United States.  https://doi.org/10.1615/AtomizSpr.2018025956.  https://www.osti.gov/servlets/purl/1526912.

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@article{osti_1526912,

  title        = {Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections},

  author       = {Sphicas, Panos and Pickett, Lyle M. and Skeen, S. A. and Frank, J. H. and Parrish, S.},

  abstractNote = {The collapse or merging of individual plumes of direct-injection gasoline injectors is of fundamental importance to engine performance because of its impact on fuel-air mixing. However, the mechanisms of spray collapse are not fully understood. The purpose of this work is to study the effects of injection duration and multiple injections on the interaction and/or collapse of multi-plume GDI sprays. High-speed (100 kHz) Particle Image Velocimetry (PIV) is applied along a plane between plumes to observe the full temporal evolution of plume-interaction and potential collapse, resolved for individual injection events. Supporting information along a line of sight is obtained using Diffused Back Illumination (DBI). Experiments are performed under simulated engine conditions using a symmetric 8-hole injector in a high-temperature, high-pressure vessel at the "Spray G" operating conditions of the Engine Combustion Network (ECN). Longer injection duration is found to promote plume collapse, while staging fuel delivery with multiple, shorter injections is resistant to plume collapse.},

  doi          = {10.1615/AtomizSpr.2018025956},

  journal      = {Atomization and Sprays},

  number       = 9,

  volume       = 28,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 2018},

  month        = {Mon Jan 01 00:00:00 EST 2018}

}

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Journal Article:

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https://doi.org/10.1615/AtomizSpr.2018025956

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Cited by: 4 works

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Figures / Tables:

Figure 1: Illustration of injector tip and definition of plume direction and plume cone. More information on the ECN Spray G nozzle is available on ("Inter-plume aerodynamics for gasoline spray collapse', 2018)

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Works referencing / citing this record:

Development of limited-view tomography for measurement of Spray G plume direction and liquid volume fraction
journal, January 2020

Weiss, Lukas; Wensing, Michael; Hwang, Joonsik
Experiments in Fluids, Vol. 61, Issue 2
DOI: 10.1007/s00348-020-2885-0

Figures / Tables found in this record:

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

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Title: Interplume Velocity and Extinction Imaging Measurements To Understand Spray Collapse When Varying Injection Duration Or Number Of Injections

Abstract

Citation Formats

Figures / Tables:

Development of limited-view tomography for measurement of Spray G plume direction and liquid volume fraction journal, January 2020

Development of limited-view tomography for measurement of Spray G plume direction and liquid volume fraction
journal, January 2020