Modeling scramjet supersonic combustion via Eddy Dissipation Model

Jimmy-John O.E. Hoste, Marco Fossati, Ian J. Taylor, Rowan J. Gollan

Research output: Contribution to conference › Paper

Abstract

Scramjet technology has gained considerable interest in multi-stage to orbit design concepts due to its reusability and high specific impulse at high-Mach regimes. The aim of the present work is to introduce Reynolds Averaged Navier-Stokes CFD calculations in the design phase of scramjet vehicles and increase the fidelity of engine performance assessment. The turbulence-chemistry interaction is described by the Eddy Dissipation Model (EDM) introduced by Magnussen and Hjertager, which assumes that turbulent motions and not chemistry is the main driver in the rate of combustion. The use of the EDM is explored by application to three hydrogen–fueled scramjet test cases. The model requires constants to be prescribed, which are found to be case dependent. Optimal values for the cases simulated are discussed along with appropriateness of the model for general design simulations. The advantage in computational cost is demonstrated by comparison with a no-model finite-rate chemistry approach.
LanguageEnglish
Number of pages13
Publication statusPublished - 25 Sep 2017
Event68th International Astronautical Congress (IAC) - Adelaide, Australia
Duration: 25 Sep 2017 → 29 Sep 2017
Conference number: 68th

Conference

Conference68th International Astronautical Congress (IAC)
Abbreviated titleIAC-17
CountryAustralia
CityAdelaide
Period25/09/17 → 29/09/17

Fingerprint

Reusability
Mach number
Computational fluid dynamics
Orbits
Turbulence
Engines
Hydrogen
Costs

Keywords

  • scramjet
  • k-omega 2006
  • Eddy Dissipation Model

Cite this

Hoste, J-J. O. E., Fossati, M., Taylor, I. J., & Gollan, R. J. (2017). Modeling scramjet supersonic combustion via Eddy Dissipation Model. Paper presented at 68th International Astronautical Congress (IAC), Adelaide, Australia.
Hoste, Jimmy-John O.E. ; Fossati, Marco ; Taylor, Ian J. ; Gollan, Rowan J. / Modeling scramjet supersonic combustion via Eddy Dissipation Model. Paper presented at 68th International Astronautical Congress (IAC), Adelaide, Australia.13 p.
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Hoste, J-JOE, Fossati, M, Taylor, IJ & Gollan, RJ 2017, 'Modeling scramjet supersonic combustion via Eddy Dissipation Model' Paper presented at 68th International Astronautical Congress (IAC), Adelaide, Australia, 25/09/17 - 29/09/17, .

Modeling scramjet supersonic combustion via Eddy Dissipation Model. / Hoste, Jimmy-John O.E.; Fossati, Marco; Taylor, Ian J.; Gollan, Rowan J.

2017. Paper presented at 68th International Astronautical Congress (IAC), Adelaide, Australia.

Research output: Contribution to conference › Paper

TY - CONF

T1 - Modeling scramjet supersonic combustion via Eddy Dissipation Model

AU - Hoste, Jimmy-John O.E.

AU - Fossati, Marco

AU - Taylor, Ian J.

AU - Gollan, Rowan J.

PY - 2017/9/25

Y1 - 2017/9/25

N2 - Scramjet technology has gained considerable interest in multi-stage to orbit design concepts due to its reusability and high specific impulse at high-Mach regimes. The aim of the present work is to introduce Reynolds Averaged Navier-Stokes CFD calculations in the design phase of scramjet vehicles and increase the fidelity of engine performance assessment. The turbulence-chemistry interaction is described by the Eddy Dissipation Model (EDM) introduced by Magnussen and Hjertager, which assumes that turbulent motions and not chemistry is the main driver in the rate of combustion. The use of the EDM is explored by application to three hydrogen–fueled scramjet test cases. The model requires constants to be prescribed, which are found to be case dependent. Optimal values for the cases simulated are discussed along with appropriateness of the model for general design simulations. The advantage in computational cost is demonstrated by comparison with a no-model finite-rate chemistry approach.

AB - Scramjet technology has gained considerable interest in multi-stage to orbit design concepts due to its reusability and high specific impulse at high-Mach regimes. The aim of the present work is to introduce Reynolds Averaged Navier-Stokes CFD calculations in the design phase of scramjet vehicles and increase the fidelity of engine performance assessment. The turbulence-chemistry interaction is described by the Eddy Dissipation Model (EDM) introduced by Magnussen and Hjertager, which assumes that turbulent motions and not chemistry is the main driver in the rate of combustion. The use of the EDM is explored by application to three hydrogen–fueled scramjet test cases. The model requires constants to be prescribed, which are found to be case dependent. Optimal values for the cases simulated are discussed along with appropriateness of the model for general design simulations. The advantage in computational cost is demonstrated by comparison with a no-model finite-rate chemistry approach.

KW - scramjet

KW - k-omega 2006

KW - Eddy Dissipation Model

UR - http://www.iafastro.org/events/iac/iac-2017/

M3 - Paper

ER -

Hoste J-JOE, Fossati M, Taylor IJ, Gollan RJ. Modeling scramjet supersonic combustion via Eddy Dissipation Model. 2017. Paper presented at 68th International Astronautical Congress (IAC), Adelaide, Australia.

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