Influence of piston displacement on the scavenging and swirling flow in two-stroke diesel engines

Publication: ResearchConference abstract for conference – Annual report year: 2012

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Influence of piston displacement on the scavenging and swirling flow in two-stroke diesel engines. / Obeidat, Anas; Haider, Sajjad; Ingvorsen, Kristian Mark; Meyer, Knud Erik; Walther, Jens Honore.

2012. Abstract from 23rd Nordic Seminar on Computational Mechanics, Stockholm, Sweden.

Publication: ResearchConference abstract for conference – Annual report year: 2012

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Author

Obeidat, Anas; Haider, Sajjad; Ingvorsen, Kristian Mark; Meyer, Knud Erik; Walther, Jens Honore / Influence of piston displacement on the scavenging and swirling flow in two-stroke diesel engines.

2012. Abstract from 23rd Nordic Seminar on Computational Mechanics, Stockholm, Sweden.

Publication: ResearchConference abstract for conference – Annual report year: 2012

Bibtex

@misc{40255a5474494a5eb4499de6cfb83ec4,
title = "Influence of piston displacement on the scavenging and swirling flow in two-stroke diesel engines",
author = "Anas Obeidat and Sajjad Haider and Ingvorsen, {Kristian Mark} and Meyer, {Knud Erik} and Walther, {Jens Honore}",
year = "2012",
type = "ConferencePaper <importModel: ConferenceImportModel>",

}

RIS

TY - ABST

T1 - Influence of piston displacement on the scavenging and swirling flow in two-stroke diesel engines

A1 - Obeidat,Anas

A1 - Haider,Sajjad

A1 - Ingvorsen,Kristian Mark

A1 - Meyer,Knud Erik

A1 - Walther,Jens Honore

AU - Obeidat,Anas

AU - Haider,Sajjad

AU - Ingvorsen,Kristian Mark

AU - Meyer,Knud Erik

AU - Walther,Jens Honore

PY - 2012

Y1 - 2012

N2 - We study the effect of piston motion on the in-cylinder swirling flow in a low speed, large two-stroke marine diesel engine. The work involves experimental, and numerical simulation using OpenFOAM platform, Large Eddy Simulation was used with three different models, One equation Eddy, Dynamic One equation Eddy, and Ta Phouc Loc model, to study the transient phenomena of the flow. The results are conducted at six cross sectional planes along the axis of the cylinder and with the piston displaced at four fixed piston positions covering the air intake ports by 0%,25%, 50%, and 75% respectively, for the fully opened case LES model with 8/12 million mesh points were used. We find that the flow inside the cylinder changes as the ports are closing, from a Rankine/Burger vortex profile to a solid body rotation while the axial velocity profiles change from a wake-like to a jet-like profile.

AB - We study the effect of piston motion on the in-cylinder swirling flow in a low speed, large two-stroke marine diesel engine. The work involves experimental, and numerical simulation using OpenFOAM platform, Large Eddy Simulation was used with three different models, One equation Eddy, Dynamic One equation Eddy, and Ta Phouc Loc model, to study the transient phenomena of the flow. The results are conducted at six cross sectional planes along the axis of the cylinder and with the piston displaced at four fixed piston positions covering the air intake ports by 0%,25%, 50%, and 75% respectively, for the fully opened case LES model with 8/12 million mesh points were used. We find that the flow inside the cylinder changes as the ports are closing, from a Rankine/Burger vortex profile to a solid body rotation while the axial velocity profiles change from a wake-like to a jet-like profile.

KW - Diesel engine

KW - Swirl

KW - Scavenging

KW - LES simulation

ER -