Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure

Alisson Vinicius Brito Lopes; Nwabueze Emekwuru

Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure

Alisson Vinicius Brito Lopes, Nwabueze Emekwuru

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

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Abstract

Results of impact of the number of computational parcels on droplet size distribution, flame mode and structure for ethanol spray flame simulations are presented. Predominantly premixed flame at inner shear layers is better predicted
for larger number (500, 1000) of parcels; more uniform evaporation of larger droplets are predicted, and the appearance of a locally fully gaseous non-premixed mode is driven by the recirculating flow field. With smaller number (10, 100) of parcels, discrepancies in computed flame modes are noticed and these could be associated with complete and faster vaporization of higher population of small droplets occurring especially within the central recirculation zone under the influence of recirculating hot products. This methodology could help with choosing the appropriate number of computational parcels for such simulations.

Original language	English
Title of host publication	ECM - 10th European Combustion Meeting, April 14 - 15, 2021. Naples, Italy
Publisher	European Combustion Meeting
Number of pages	6
Publication status	Published - 15 Apr 2021
Event	10th European Combustion Meeting - Virtual conference, Napoli, Italy Duration: 14 Apr 2021 → 15 Apr 2021 Conference number: 10 https://www.combustioninstitute.org/ci-event/10th-european-combustion-meeting/

Conference

Conference	10th European Combustion Meeting
Country/Territory	Italy
City	Napoli
Period	14/04/21 → 15/04/21
Internet address	https://www.combustioninstitute.org/ci-event/10th-european-combustion-meeting/

Keywords

computational parcels
CFD
Combustion
Swirl flow
spray flame
flame mode

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Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure. / Brito Lopes, Alisson Vinicius; Emekwuru, Nwabueze.
ECM - 10th European Combustion Meeting, April 14 - 15, 2021. Naples, Italy. European Combustion Meeting, 2021.

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

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title = "Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure",

abstract = "Results of impact of the number of computational parcels on droplet size distribution, flame mode and structure for ethanol spray flame simulations are presented. Predominantly premixed flame at inner shear layers is better predicted for larger number (500, 1000) of parcels; more uniform evaporation of larger droplets are predicted, and the appearance of a locally fully gaseous non-premixed mode is driven by the recirculating flow field. With smaller number (10, 100) of parcels, discrepancies in computed flame modes are noticed and these could be associated with complete and faster vaporization of higher population of small droplets occurring especially within the central recirculation zone under the influence of recirculating hot products. This methodology could help with choosing the appropriate number of computational parcels for such simulations.",

keywords = "computational parcels, CFD, Combustion, Swirl flow, spray flame, flame mode",

author = "{Brito Lopes}, {Alisson Vinicius} and Nwabueze Emekwuru",

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AU - Brito Lopes, Alisson Vinicius

AU - Emekwuru, Nwabueze

N1 - Conference code: 10

PY - 2021/4/15

Y1 - 2021/4/15

N2 - Results of impact of the number of computational parcels on droplet size distribution, flame mode and structure for ethanol spray flame simulations are presented. Predominantly premixed flame at inner shear layers is better predicted for larger number (500, 1000) of parcels; more uniform evaporation of larger droplets are predicted, and the appearance of a locally fully gaseous non-premixed mode is driven by the recirculating flow field. With smaller number (10, 100) of parcels, discrepancies in computed flame modes are noticed and these could be associated with complete and faster vaporization of higher population of small droplets occurring especially within the central recirculation zone under the influence of recirculating hot products. This methodology could help with choosing the appropriate number of computational parcels for such simulations.

AB - Results of impact of the number of computational parcels on droplet size distribution, flame mode and structure for ethanol spray flame simulations are presented. Predominantly premixed flame at inner shear layers is better predicted for larger number (500, 1000) of parcels; more uniform evaporation of larger droplets are predicted, and the appearance of a locally fully gaseous non-premixed mode is driven by the recirculating flow field. With smaller number (10, 100) of parcels, discrepancies in computed flame modes are noticed and these could be associated with complete and faster vaporization of higher population of small droplets occurring especially within the central recirculation zone under the influence of recirculating hot products. This methodology could help with choosing the appropriate number of computational parcels for such simulations.

KW - computational parcels

KW - CFD

KW - Combustion

KW - Swirl flow

KW - spray flame

KW - flame mode

UR - https://www.ecm2021napoli.eu/proceedings/

M3 - Conference proceeding

BT - ECM - 10th European Combustion Meeting, April 14 - 15, 2021. Naples, Italy

PB - European Combustion Meeting

T2 - 10th European Combustion Meeting

Y2 - 14 April 2021 through 15 April 2021

ER -

Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure

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Conference

Keywords

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