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Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_16:accueil [2023/03/19 22:20] – ikrambeghdadi | public:modeles:rotor_16:accueil [2024/08/06 16:54] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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annulus area on the performance of axial-flow fan stages. A series of three stage: rotor 11, 16 and 17 were designed with a weight flow per unit annulus area of 198, 178, and 208 kilograms per second per square meter. All three stages were designed to produce a pressure ratio of 1.57, and all had the same meridional flow path geometry. | annulus area on the performance of axial-flow fan stages. A series of three stage: rotor 11, 16 and 17 were designed with a weight flow per unit annulus area of 198, 178, and 208 kilograms per second per square meter. All three stages were designed to produce a pressure ratio of 1.57, and all had the same meridional flow path geometry. | ||
- | * Original technical report [(cite: | + | * Original technical report [(cite: |
author | author | ||
date = {1973}, | date = {1973}, | ||
Ligne 35: | Ligne 35: | ||
* [[https:// | * [[https:// | ||
* {{ : | * {{ : | ||
- | * {{ : | + | * {{ : |
</ | </ | ||
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^ aspect ratio | [-] | 2.6 | | ^ aspect ratio | [-] | 2.6 | | ||
^ number of blades | ^ number of blades | ||
- | ^ rotative | + | ^ nominal rotation |
==== Material properties | ==== Material properties | ||
- | The original material of the rotor 16 is not defined in the NASA report. | + | The original material of the rotor 16 is not defined in the NASA report. |
- | + | ||
- | Considered properties: | + | |
^ | ^ | ||
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^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
| 1 | 1B | 1456.25 | | 1 | 1B | 1456.25 | ||
- | | 2 | 2B | 5431.61 | + | | 2 | 2B | 5431.61 |
| 3 | 1T | 7997.11 | | 3 | 1T | 7997.11 | ||
+ | ====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: | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
Ligne 120: | Ligne 126: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
| 1 | 1B | 1454.87 | | 1 | 1B | 1454.87 | ||
- | | 2 | 2B | 5429.48 | + | | 2 | 2B | 5429.48 |
- | | 3 | 1T | 8000.38 | + | | 3 | 1T | 8000.38 |
Ligne 127: | Ligne 133: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 1454.90 | + | | 1 | 1B | 1454.90 |
- | | 2 | 2B | 5431.53 | + | | 2 | 2B | 5431.53 |
| 3 | 1T | 8002.64 | | 3 | 1T | 8002.64 | ||
+ | ====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 144: | Ligne 162: | ||
===== À propos ===== | ===== À propos ===== | ||
- | Le rotor 16 fait partie d'un programme de recherche visant à étudier l' | + | Le rotor 16 fait partie d'un programme de recherche visant à étudier l' |
- | * Rapport technique original [(cite: | + | * Rapport technique original [(cite: |
@TechReport{moore1973design, | @TechReport{moore1973design, | ||
author | author | ||
Ligne 166: | Ligne 184: | ||
* [[https:// | * [[https:// | ||
* {{ : | * {{ : | ||
- | * {{ : | + | * {{ : |
</ | </ | ||
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^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
==== Propriétés matériau | ==== Propriétés matériau | ||
- | Le matériau original du rotor 16 n'est pas défini dans le rapport de la NASA. | + | Le matériau original du rotor 16 n'est pas défini dans le rapport de la NASA. Un alliage de titane Ti-6Al-4v |
- | + | ||
- | Propriétés considérées : | + | |
^ | ^ | ||
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^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
| 1 | 1F | 1456, | | 1 | 1F | 1456, | ||
- | | 2 | 2F | 5431, | + | | 2 | 2F | 5431, |
| 3 | 1T | 7997, | | 3 | 1T | 7997, | ||
+ | |||
+ | ====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 ===== | ||
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^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
| 1 | 1F | 1454, | | 1 | 1F | 1454, | ||
- | | 2 | 2F | 5429, | + | | 2 | 2F | 5429, |
- | | 3 | 1T | 8000, | + | | 3 | 1T | 8000, |
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^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 1454, | + | | 1 | 1F | 1454, |
- | | 2 | 2F | 5431, | + | | 2 | 2F | 5431, |
| 3 | 1T | 8002, | | 3 | 1T | 8002, | ||
+ | ====Diagramme de Campbell==== | ||
+ | Comparaison de l' | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
- | </ | ||
</ | </ | ||
+ | </ | ||
- public/modeles/rotor_16/accueil.1679278835.txt.gz
- Dernière modification : 2023/04/05 08:59
- (modification externe)