| Autor: |
Schall, Eric, Lardat, Raphael, Dervieux, Alain, Koobus, Bruno, Farhat, Charbel |
| Zdroj: |
Revue Européenne des Éléments; January 2000, Vol. 9 Issue: 6-7 p835-851, 17p |
| Abstrakt: |
ABSTRACTRocket divergents concentrate the engine thrust on a light structure. This thrust may provoke deformations, and these deformations may influence the jet. For analysis, we formulate a coupled fluid/structure/moving grid problem, which leads to a numerical model involving a three-field Arbitrary Lagrangian- Eulerian method offering second-order spatial accuracy. It employs a time-staggered procedure for global second-order accurate time-integration of the corresponding coupled semi-discrete equations. We present the transient aeroelastic response obtained with a simplified geometry of divergent when the flow condition induces shock waves either behind or inside the nozzle, for structural designs of small stiffness. |
| Databáze: |
Supplemental Index |
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