Abstract
Language | English |
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Number of pages | 13 |
Publication status | Published - 25 Sep 2017 |
Event | 68th International Astronautical Congress (IAC) - Adelaide, Australia Duration: 25 Sep 2017 → 29 Sep 2017 Conference number: 68th |
Conference
Conference | 68th International Astronautical Congress (IAC) |
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Abbreviated title | IAC-17 |
Country | Australia |
City | Adelaide |
Period | 25/09/17 → 29/09/17 |
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Keywords
- scramjet
- k-omega 2006
- Eddy Dissipation Model
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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 -