Numerical Computations of Turbulent Swirling Reacting Flows Using URANS and LES

Marcel Ilie

doi:10.2514/6.2009-5407

Numerical Computations of Turbulent Swirling Reacting Flows Using URANS and LES

Marcel Ilie

Mechanical Engineering

Research output: Contribution to book or proceeding › Chapter

Abstract

Numerical studies of turbulent swirling reacting flows are performed using unsteady Reynolds-averaged Navier-Stokes (URANS) and large-eddy simulation (LES). The conserved scalar-mixture fraction-based thermo-chemical variables are described using the steady laminar flamelet model. The Favre-filtered scalars are obtained from the presumed beta probability density function (β-PDF) approach. The flow field exhibits upstream recirculation zone due to the bluff body and a downstream vortex breakdown region induced by the swirling flow. The URANS approach underpredicts the flow and combustion variables when compared to LES.

Original language	American English
Title of host publication	Proceedings of the Joint Propulsion Conference and Exhibit
DOIs	https://doi.org/10.2514/6.2009-5407
State	Published - Aug 2 2009

Disciplines

Mechanical Engineering

Keywords

LES
Reacting flows
Turbulent swirling
URANS

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Cite this

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abstract = " Numerical studies of turbulent swirling reacting flows are performed using unsteady Reynolds-averaged Navier-Stokes (URANS) and large-eddy simulation (LES). The conserved scalar-mixture fraction-based thermo-chemical variables are described using the steady laminar flamelet model. The Favre-filtered scalars are obtained from the presumed beta probability density function (β-PDF) approach. The flow field exhibits upstream recirculation zone due to the bluff body and a downstream vortex breakdown region induced by the swirling flow. The URANS approach underpredicts the flow and combustion variables when compared to LES.",

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author = "Marcel Ilie",

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doi = "10.2514/6.2009-5407",

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AB - Numerical studies of turbulent swirling reacting flows are performed using unsteady Reynolds-averaged Navier-Stokes (URANS) and large-eddy simulation (LES). The conserved scalar-mixture fraction-based thermo-chemical variables are described using the steady laminar flamelet model. The Favre-filtered scalars are obtained from the presumed beta probability density function (β-PDF) approach. The flow field exhibits upstream recirculation zone due to the bluff body and a downstream vortex breakdown region induced by the swirling flow. The URANS approach underpredicts the flow and combustion variables when compared to LES.

KW - LES

KW - Reacting flows

KW - Turbulent swirling

KW - URANS

UR - https://doi.org/10.2514/6.2009-5407

U2 - 10.2514/6.2009-5407

DO - 10.2514/6.2009-5407

M3 - Chapter

BT - Proceedings of the Joint Propulsion Conference and Exhibit

ER -

Numerical Computations of Turbulent Swirling Reacting Flows Using URANS and LES

Abstract

Disciplines

Keywords

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