Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation

Ville Vuorinen; Harri Hillamo; Ossi Kaario; M. Nuutinen; Martti Larmi; Laszlo Fuchs

doi:10.1615/ICHMT.2009.TurbulHeatMassTransf.1440

Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation

Ville Vuorinen, Harri Hillamo, Ossi Kaario, M. Nuutinen, Martti Larmi, Laszlo Fuchs

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Droplet breakup and size effects in a turbulent carrier flow are commonly encountered problems. To simulate a realistic spray pattern, the droplet size distribution and its time-evolution need to be modeled. Here, we present a priori results on the effect of droplet size on spray shape using Large-Eddy Simulation and Lagrangian Particle Tracking. Results of non-atomizing and atomizing sprays in a turbulent droplet laden jet at Reynolds number 104, Mach number 0.3 and Weber numbers below 15 are compared. The simulations show that a new, compact atomization model that models the breakup as a Poisson process with droplet resonance frequency as the rate parameter, can be used to control the atomization time and thereby the spray shape and structure. Consequent droplet size effects on turbulent mixing are discussed and quantified.

Original language	English
Title of host publication	6th International Symposium on Turbulence, Heat and Mass Transfer, Rome, Italy, 14-18 September 2009
Publisher	Begell House
Number of pages	12
DOIs	https://doi.org/10.1615/ICHMT.2009.TurbulHeatMassTransf.1440
Publication status	Published - 2009
MoE publication type	A4 Conference publication
Event	International Symposium on Turbulence Heat and Mass Transfer - Rome, Italy Duration: 14 Sept 2009 → 18 Sept 2009 Conference number: 6

Conference

Conference	International Symposium on Turbulence Heat and Mass Transfer
Abbreviated title	ICHMT
Country/Territory	Italy
City	Rome
Period	14/09/2009 → 18/09/2009

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10.1615/ICHMT.2009.TurbulHeatMassTransf.1440

Cite this

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title = "Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation",

abstract = "Droplet breakup and size effects in a turbulent carrier flow are commonly encountered problems. To simulate a realistic spray pattern, the droplet size distribution and its time-evolution need to be modeled. Here, we present a priori results on the effect of droplet size on spray shape using Large-Eddy Simulation and Lagrangian Particle Tracking. Results of non-atomizing and atomizing sprays in a turbulent droplet laden jet at Reynolds number 104, Mach number 0.3 and Weber numbers below 15 are compared. The simulations show that a new, compact atomization model that models the breakup as a Poisson process with droplet resonance frequency as the rate parameter, can be used to control the atomization time and thereby the spray shape and structure. Consequent droplet size effects on turbulent mixing are discussed and quantified.",

author = "Ville Vuorinen and Harri Hillamo and Ossi Kaario and M. Nuutinen and Martti Larmi and Laszlo Fuchs",

year = "2009",

doi = "10.1615/ICHMT.2009.TurbulHeatMassTransf.1440",

language = "English",

booktitle = "6th International Symposium on Turbulence, Heat and Mass Transfer, Rome, Italy, 14-18 September 2009",

publisher = "Begell House",

address = "United States",

note = "International Symposium on Turbulence Heat and Mass Transfer, ICHMT ; Conference date: 14-09-2009 Through 18-09-2009",

}

Vuorinen, V, Hillamo, H, Kaario, O , Nuutinen, M , Larmi, M & Fuchs, L 2009, Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation. in 6th International Symposium on Turbulence, Heat and Mass Transfer, Rome, Italy, 14-18 September 2009. Begell House, International Symposium on Turbulence Heat and Mass Transfer, Rome, Italy, 14/09/2009. https://doi.org/10.1615/ICHMT.2009.TurbulHeatMassTransf.1440

Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation. / Vuorinen, Ville; Hillamo, Harri; Kaario, Ossi et al.
6th International Symposium on Turbulence, Heat and Mass Transfer, Rome, Italy, 14-18 September 2009. Begell House, 2009.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation

AU - Vuorinen, Ville

AU - Hillamo, Harri

AU - Kaario, Ossi

AU - Nuutinen, M.

AU - Larmi, Martti

AU - Fuchs, Laszlo

N1 - Conference code: 6

PY - 2009

Y1 - 2009

N2 - Droplet breakup and size effects in a turbulent carrier flow are commonly encountered problems. To simulate a realistic spray pattern, the droplet size distribution and its time-evolution need to be modeled. Here, we present a priori results on the effect of droplet size on spray shape using Large-Eddy Simulation and Lagrangian Particle Tracking. Results of non-atomizing and atomizing sprays in a turbulent droplet laden jet at Reynolds number 104, Mach number 0.3 and Weber numbers below 15 are compared. The simulations show that a new, compact atomization model that models the breakup as a Poisson process with droplet resonance frequency as the rate parameter, can be used to control the atomization time and thereby the spray shape and structure. Consequent droplet size effects on turbulent mixing are discussed and quantified.

AB - Droplet breakup and size effects in a turbulent carrier flow are commonly encountered problems. To simulate a realistic spray pattern, the droplet size distribution and its time-evolution need to be modeled. Here, we present a priori results on the effect of droplet size on spray shape using Large-Eddy Simulation and Lagrangian Particle Tracking. Results of non-atomizing and atomizing sprays in a turbulent droplet laden jet at Reynolds number 104, Mach number 0.3 and Weber numbers below 15 are compared. The simulations show that a new, compact atomization model that models the breakup as a Poisson process with droplet resonance frequency as the rate parameter, can be used to control the atomization time and thereby the spray shape and structure. Consequent droplet size effects on turbulent mixing are discussed and quantified.

U2 - 10.1615/ICHMT.2009.TurbulHeatMassTransf.1440

DO - 10.1615/ICHMT.2009.TurbulHeatMassTransf.1440

M3 - Conference article in proceedings

BT - 6th International Symposium on Turbulence, Heat and Mass Transfer, Rome, Italy, 14-18 September 2009

PB - Begell House

T2 - International Symposium on Turbulence Heat and Mass Transfer

Y2 - 14 September 2009 through 18 September 2009

ER -

Effect of Droplet Size and Breakup on Spray Shape: A Priori Study Using Large-Eddy Simulation

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