INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES

Shrikar Banagiri; Piyush Raj; Joseph Meadows

doi:10.1115/GT2025-153932

INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES

Shrikar Banagiri
, Piyush Raj
, Joseph Meadows

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

Abstract

The influence of spatial discretization, mesh refinement, and turbulence-chemistry interactions on wave mode dynamics and heat release is studied by performing full-scale 3D non-premixed reacting flow simulations of a rotating detonation engine. A total of seven cases were simulated for a single wave mode experimental condition. A second-order Roe flux-difference splitting (FDS) scheme and a third-order monotonic upstream-centered scheme for conservation laws (MUSCL) were used to study the influence of spatial discretization on wave mode formation. Five different base mesh sizes in the detonation region (0.6 mm, 0.45 mm, 0.35 mm, 0.3 mm, and 0.25 mm) were used to study the influence of mesh refinement on wave mode dynamics. Lower order of discretization and coarser mesh sizes led to greater number of spurious waves, which was attributed to the increase in numerical dissipation/artificial mixing. The wave number and direction were strongly dependent on the mesh parameters. Apart from refinement, inclusion of turbulence-chemistry interactions (TCI) through the partially stirred reactor model led to the dissipation of spurious waves. Finally, it was shown that including TCI in non-premixed RDE simulations significantly reduces the mesh requirement compared to finite-rate chemistry with no TCI.

Original language	English
Title of host publication	Combustion, Fuels and Emissions
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791888797
DOIs	https://doi.org/10.1115/GT2025-153932
State	Published - 2025
Externally published	Yes
Event	70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025 - Memphis, United States Duration: Jun 16 2025 → Jun 20 2025

Publication series

Name	Proceedings of the ASME Turbo Expo
Volume	3B-2025

Conference

Conference	70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025
Country/Territory	United States
City	Memphis
Period	06/16/25 → 06/20/25

Funding

This study was funded by the Department of Energy (DOE) under Award No. DE-EE-0032077. The authors acknowledge ANSYS Inc. for providing the CFD software through the ANSYSVT partnership and Dr. Brent Rankin from AFRL for providing the geometry and experimental dataset. The authors would also like to acknowledge Bruce Crawford for providing technical support with ANSYS Fluent.

Keywords

Fuel-air mixing
Multi wave mode
Non-premixed simulations
Pressure gain combustion (PGC)
Rotating Detonation Engine (RDE)
Turbulence-chemistry interactions

Access to Document

10.1115/GT2025-153932

Cite this

@inproceedings{eac11b0e0ed944bca788e938998b9c36,

title = "INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES",

abstract = "The influence of spatial discretization, mesh refinement, and turbulence-chemistry interactions on wave mode dynamics and heat release is studied by performing full-scale 3D non-premixed reacting flow simulations of a rotating detonation engine. A total of seven cases were simulated for a single wave mode experimental condition. A second-order Roe flux-difference splitting (FDS) scheme and a third-order monotonic upstream-centered scheme for conservation laws (MUSCL) were used to study the influence of spatial discretization on wave mode formation. Five different base mesh sizes in the detonation region (0.6 mm, 0.45 mm, 0.35 mm, 0.3 mm, and 0.25 mm) were used to study the influence of mesh refinement on wave mode dynamics. Lower order of discretization and coarser mesh sizes led to greater number of spurious waves, which was attributed to the increase in numerical dissipation/artificial mixing. The wave number and direction were strongly dependent on the mesh parameters. Apart from refinement, inclusion of turbulence-chemistry interactions (TCI) through the partially stirred reactor model led to the dissipation of spurious waves. Finally, it was shown that including TCI in non-premixed RDE simulations significantly reduces the mesh requirement compared to finite-rate chemistry with no TCI.",

keywords = "Fuel-air mixing, Multi wave mode, Non-premixed simulations, Pressure gain combustion (PGC), Rotating Detonation Engine (RDE), Turbulence-chemistry interactions",

author = "Shrikar Banagiri and Piyush Raj and Joseph Meadows",

note = "Publisher Copyright: Copyright {\textcopyright} 2025 by ASME.; 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025 ; Conference date: 16-06-2025 Through 20-06-2025",

year = "2025",

doi = "10.1115/GT2025-153932",

language = "English",

series = "Proceedings of the ASME Turbo Expo",

publisher = "American Society of Mechanical Engineers (ASME)",

booktitle = "Combustion, Fuels and Emissions",

}

Banagiri, S, Raj, P & Meadows, J 2025, INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES. in Combustion, Fuels and Emissions., v03bt04a044, Proceedings of the ASME Turbo Expo, vol. 3B-2025, American Society of Mechanical Engineers (ASME), 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025, Memphis, United States, 06/16/25. https://doi.org/10.1115/GT2025-153932

INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES. / Banagiri, Shrikar; Raj, Piyush; Meadows, Joseph.
Combustion, Fuels and Emissions. American Society of Mechanical Engineers (ASME), 2025. v03bt04a044 (Proceedings of the ASME Turbo Expo; Vol. 3B-2025).

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

TY - GEN

T1 - INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES

AU - Banagiri, Shrikar

AU - Raj, Piyush

AU - Meadows, Joseph

PY - 2025

Y1 - 2025

N2 - The influence of spatial discretization, mesh refinement, and turbulence-chemistry interactions on wave mode dynamics and heat release is studied by performing full-scale 3D non-premixed reacting flow simulations of a rotating detonation engine. A total of seven cases were simulated for a single wave mode experimental condition. A second-order Roe flux-difference splitting (FDS) scheme and a third-order monotonic upstream-centered scheme for conservation laws (MUSCL) were used to study the influence of spatial discretization on wave mode formation. Five different base mesh sizes in the detonation region (0.6 mm, 0.45 mm, 0.35 mm, 0.3 mm, and 0.25 mm) were used to study the influence of mesh refinement on wave mode dynamics. Lower order of discretization and coarser mesh sizes led to greater number of spurious waves, which was attributed to the increase in numerical dissipation/artificial mixing. The wave number and direction were strongly dependent on the mesh parameters. Apart from refinement, inclusion of turbulence-chemistry interactions (TCI) through the partially stirred reactor model led to the dissipation of spurious waves. Finally, it was shown that including TCI in non-premixed RDE simulations significantly reduces the mesh requirement compared to finite-rate chemistry with no TCI.

AB - The influence of spatial discretization, mesh refinement, and turbulence-chemistry interactions on wave mode dynamics and heat release is studied by performing full-scale 3D non-premixed reacting flow simulations of a rotating detonation engine. A total of seven cases were simulated for a single wave mode experimental condition. A second-order Roe flux-difference splitting (FDS) scheme and a third-order monotonic upstream-centered scheme for conservation laws (MUSCL) were used to study the influence of spatial discretization on wave mode formation. Five different base mesh sizes in the detonation region (0.6 mm, 0.45 mm, 0.35 mm, 0.3 mm, and 0.25 mm) were used to study the influence of mesh refinement on wave mode dynamics. Lower order of discretization and coarser mesh sizes led to greater number of spurious waves, which was attributed to the increase in numerical dissipation/artificial mixing. The wave number and direction were strongly dependent on the mesh parameters. Apart from refinement, inclusion of turbulence-chemistry interactions (TCI) through the partially stirred reactor model led to the dissipation of spurious waves. Finally, it was shown that including TCI in non-premixed RDE simulations significantly reduces the mesh requirement compared to finite-rate chemistry with no TCI.

KW - Fuel-air mixing

KW - Multi wave mode

KW - Non-premixed simulations

KW - Pressure gain combustion (PGC)

KW - Rotating Detonation Engine (RDE)

KW - Turbulence-chemistry interactions

UR - https://www.scopus.com/pages/publications/105014749572

U2 - 10.1115/GT2025-153932

DO - 10.1115/GT2025-153932

M3 - Conference contribution

AN - SCOPUS:105014749572

T3 - Proceedings of the ASME Turbo Expo

BT - Combustion, Fuels and Emissions

PB - American Society of Mechanical Engineers (ASME)

T2 - 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025

Y2 - 16 June 2025 through 20 June 2025

ER -

INFLUENCE OF MESH PARAMETERS AND TURBULENCE-CHEMISTRY INTERACTIONS ON WAVE MODE PREDICTION IN ROTATING DETONATION ENGINES

Abstract

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Funding

Keywords

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