Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_54:accueil [2023/04/06 15:16] – solenekojtych | public:modeles:rotor_54:accueil [2024/07/30 12:01] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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Ligne 16: | Ligne 16: | ||
* Original technical report [(cite: | * Original technical report [(cite: | ||
author | author | ||
- | | + | |
institution | institution | ||
title = {Aerodynamic performance of a 1.20-pressure-ratio fan stage designed for low noise}, | title = {Aerodynamic performance of a 1.20-pressure-ratio fan stage designed for low noise}, | ||
Ligne 62: | Ligne 62: | ||
^ aspect ratio | [-] | 3.9 | | ^ aspect ratio | [-] | 3.9 | | ||
^ number of blades | ^ number of blades | ||
- | ^ rotative | + | ^ nominal rotation |
==== Material properties | ==== Material properties | ||
- | he original material of the rotor 54 is not defined in the NASA report. | + | he original material of the rotor 54 is not defined in the NASA report. |
- | + | ||
- | Considered properties: | + | |
^ | ^ | ||
Ligne 105: | Ligne 103: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1018.5 | 183.317 | | + | | 1 | 1B | 1018.50 | 183.32 | |
- | | 2 | 1T | 3542.5 | 663.656 | | + | | 2 | 1T | 3542.50 | 663.66 | |
- | | 3 | 2B | 6094.7 | 1055.71 | + | | 3 | 2B | 6094.70 | 1055.71 |
+ | ====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 125: | Ligne 131: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1019.1 | 183.027 | | + | | 1 | 1B | 1019.10 | 183.03 | |
- | | 2 | 1T | 3539.3 | 665.313 | | + | | 2 | 1T | 3539.30 | 665.31 | |
- | | 3 | 2B | 6074.0 | 1052.6 | + | | 3 | 2B | 6074.00 | 1052.60 | |
Ligne 133: | Ligne 139: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1019.1 | 183.029 | | + | | 1 | 1B | 1019.10 | 183.03 | |
- | | 2 | 1T | 3540.8 | 665.406 | | + | | 2 | 1T | 3540.80 | 665.41 | |
- | | 3 | 2B | 6075.8 | 1052.81 | + | | 3 | 2B | 6075.80 | 1052.81 |
+ | |||
+ | |||
+ | ====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 154: | Ligne 174: | ||
* Rapport technique original [(cite: | * Rapport technique original [(cite: | ||
author | author | ||
- | | + | |
institution | institution | ||
title = {Aerodynamic performance of a 1.20-pressure-ratio fan stage designed for low noise}, | title = {Aerodynamic performance of a 1.20-pressure-ratio fan stage designed for low noise}, | ||
Ligne 198: | Ligne 218: | ||
^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
==== Propriétés matériau | ==== Propriétés matériau | ||
Ligne 240: | Ligne 260: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1018,5 | 183,317 | | + | | 1 | 1F | 1018,50 | 183,32 | |
- | | 2 | 1T | 3542,5 | 663,656 | | + | | 2 | 1T | 3542,50 | 663,66 | |
- | | 3 | 2F | 6094,7 | 1055, | + | | 3 | 2F | 6094,70 | 1055, |
+ | |||
+ | ====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 255: | Ligne 286: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1019,1 | 183,027 | | + | | 1 | 1F | 1019,10 |
- | | 2 | 1T | 3539,3 | 665,313 | | + | | 2 | 1T | 3539,30 | 665,31 | |
- | | 3 | 2F | 6074,0 | 1052,6 | | + | | 3 | 2F | 6074,00 | 1052,60 | |
Ligne 263: | Ligne 294: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1019,1 | 183,029 | | + | | 1 | 1F | 1019,10 | 183,03 | |
- | | 2 | 1T | 3540,8 | 665,406 | | + | | 2 | 1T | 3540,80 | 665,41 | |
- | | 3 | 2F | 6075,8 | 1052, | + | | 3 | 2F | 6075,80 | 1052, |
+ | |||
+ | |||
+ | |||
+ | ====Diagramme de Campbell==== | ||
+ | Comparaison de l' | ||
+ | {{ : | ||
+ | < | ||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
</ | </ |
- public/modeles/rotor_54/accueil.1680808599.txt.gz
- Dernière modification : 2023/04/06 15:16
- de solenekojtych