Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_21:accueil [2024/07/26 11:57] – [Caractéristiques aérodynamiques] rafaelbarraud | public:modeles:rotor_21:accueil [2024/08/06 16:59] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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Ligne 52: | Ligne 52: | ||
^ aspect ratio | [-] | 2.5 | | ^ aspect ratio | [-] | 2.5 | | ||
^ number of blades | ^ number of blades | ||
- | ^ rotative | + | ^ nominal rotation |
===== Material properties | ===== Material properties | ||
Ligne 92: | Ligne 92: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1512.88 | + | | 1 | 1B | 1512.88 |
- | | 2 | 2B | 5410.9 | 861.171 | | + | | 2 | 2B | 5410.90 | 861.17 | |
| 3 | 1T | 8729.48 | | 3 | 1T | 8729.48 | ||
+ | ====Campbell diagram==== | ||
+ | Evolution of the natural frequencies of the first 3 vibration modes, as a function of rotation speed, for the mesh computed with OpenMCAD[(cite: | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
===== Initial blade ===== | ===== Initial blade ===== | ||
Ligne 112: | Ligne 120: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1507.80 | + | | 1 | 1B | 1507.80 |
- | | 2 | 2B | 5410.47 | + | | 2 | 2B | 5410.47 |
| 3 | 1T | 8689.96 | | 3 | 1T | 8689.96 | ||
Ligne 120: | Ligne 128: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1507.89 | + | | 1 | 1B | 1507.89 |
- | | 2 | 2B | 5411.17 | + | | 2 | 2B | 5411.17 |
| 3 | 1T | 8691.72 | | 3 | 1T | 8691.72 | ||
+ | ====Campbell diagram==== | ||
+ | Comparison of the evolution of the natural frequencies of the first 3 vibration modes, as a function of rotation speed for the initial and the reference blade: | ||
+ | {{ : | ||
+ | |||
+ | |||
+ | < | ||
+ | |||
+ | initial blade (orange), reference blade (gray) </ | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
Ligne 218: | Ligne 237: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1512, | + | | 1 | 1F | 1512, |
- | | 2 | 2F | 5410,9 | 861,171 | | + | | 2 | 2F | 5410,90 | 861,17 | |
| 3 | 1T | 8729, | | 3 | 1T | 8729, | ||
+ | ====Diagramme de Campbell==== | ||
+ | Évolution des fréquences propres des 3 premiers modes, en fonction de la vitesse de rotation, pour le maillage obtenu avec OpenMCAD[(cite: | ||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
+ | |||
+ | |||
+ | |||
===== Aube initiale ===== | ===== Aube initiale ===== | ||
Ligne 234: | Ligne 263: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1507, | + | | 1 | 1F | 1507, |
- | | 2 | 2F | 5410, | + | | 2 | 2F | 5410, |
| 3 | 1T | 8689, | | 3 | 1T | 8689, | ||
Ligne 242: | Ligne 271: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1507, | + | | 1 | 1F | 1507, |
- | | 2 | 2F | 5411, | + | | 2 | 2F | 5411, |
| 3 | 1T | 8691, | | 3 | 1T | 8691, | ||
+ | ====Diagramme de Campbell==== | ||
+ | Comparaison de l' | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ |
- public/modeles/rotor_21/accueil.1722009455.txt.gz
- Dernière modification : 2024/07/26 11:57
- de rafaelbarraud