Abstract
A multi-objective design optimization study has been conducted for upstream fuel injection through porous media applied to the first ramp of a two-dimensional scramjet intake. The optimization has been performed by coupling evolutionary algorithms assisted by surrogate modeling and computational fluid dynamics with respect to three design criteria, that is, the maximization of the mixing efficiency, total pressure saving, and fuel penetration. A distinct Pareto optimal front has been obtained, highlighting the counteracting behavior of the total pressure against fuel penetration, while the mixing performance crucially depends on the fuel/air equivalence ratio, as suggested by an additional optimization using the absolute mixing quantity. The Darcian and Forchheimer coefficients in the porous flow direction have been identified as the key design parameters in conjunction with the geometric parameters as a result of a sensitivity analysis. Flowfield visualization has revealed the presence of local hot pockets with intensely high pressure and temperature offered by a long injector positioned upstream due to augmented shock interactions.
| Original language | English |
|---|---|
| Title of host publication | 53rd AIAA Aerospace Sciences Meeting |
| Publisher | American Institute of Aeronautics and Astronautics Inc, AIAA |
| ISBN (Print) | 9781624103438 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Event | 53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States Duration: Jan 5 2015 → Jan 9 2015 |
Publication series
| Name | 53rd AIAA Aerospace Sciences Meeting |
|---|
Other
| Other | 53rd AIAA Aerospace Sciences Meeting, 2015 |
|---|---|
| Country | United States |
| City | Kissimmee |
| Period | 1/5/15 → 1/9/15 |
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All Science Journal Classification (ASJC) codes
- Aerospace Engineering
Cite this
Numerical investigation of upstream fuel injection through porous media for scramjet engines via surrogate-assisted evolutionary algorithms. / Ogawa, H.; Capra, B.; Lorrain, P.
53rd AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc, AIAA, 2015. AIAA 2015-0884 (53rd AIAA Aerospace Sciences Meeting).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical investigation of upstream fuel injection through porous media for scramjet engines via surrogate-assisted evolutionary algorithms
AU - Ogawa, H.
AU - Capra, B.
AU - Lorrain, P.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - A multi-objective design optimization study has been conducted for upstream fuel injection through porous media applied to the first ramp of a two-dimensional scramjet intake. The optimization has been performed by coupling evolutionary algorithms assisted by surrogate modeling and computational fluid dynamics with respect to three design criteria, that is, the maximization of the mixing efficiency, total pressure saving, and fuel penetration. A distinct Pareto optimal front has been obtained, highlighting the counteracting behavior of the total pressure against fuel penetration, while the mixing performance crucially depends on the fuel/air equivalence ratio, as suggested by an additional optimization using the absolute mixing quantity. The Darcian and Forchheimer coefficients in the porous flow direction have been identified as the key design parameters in conjunction with the geometric parameters as a result of a sensitivity analysis. Flowfield visualization has revealed the presence of local hot pockets with intensely high pressure and temperature offered by a long injector positioned upstream due to augmented shock interactions.
AB - A multi-objective design optimization study has been conducted for upstream fuel injection through porous media applied to the first ramp of a two-dimensional scramjet intake. The optimization has been performed by coupling evolutionary algorithms assisted by surrogate modeling and computational fluid dynamics with respect to three design criteria, that is, the maximization of the mixing efficiency, total pressure saving, and fuel penetration. A distinct Pareto optimal front has been obtained, highlighting the counteracting behavior of the total pressure against fuel penetration, while the mixing performance crucially depends on the fuel/air equivalence ratio, as suggested by an additional optimization using the absolute mixing quantity. The Darcian and Forchheimer coefficients in the porous flow direction have been identified as the key design parameters in conjunction with the geometric parameters as a result of a sensitivity analysis. Flowfield visualization has revealed the presence of local hot pockets with intensely high pressure and temperature offered by a long injector positioned upstream due to augmented shock interactions.
UR - http://www.scopus.com/inward/record.url?scp=84980340031&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84980340031&partnerID=8YFLogxK
U2 - 10.2514/6.2015-0884
DO - 10.2514/6.2015-0884
M3 - Conference contribution
AN - SCOPUS:84980340031
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
ER -