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Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_38:accueil [2023/03/28 11:25] – solenekojtych | public:modeles:rotor_38:accueil [2024/08/07 16:59] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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===== About ===== | ===== About ===== | ||
- | Rotor 38 is part of a research program to study a advanced-core compressor design with a high compression ratio (20:1). It is therefore the fourth stage rotor of this eight stage transonic compressor. Of these eight stages, the first four have been designed and tested : rotors 35, 36, 37 and 38. For more information, | + | Rotor 38 is part of a research program to study a advanced-core compressor design with a high compression ratio (20:1). It is therefore the fourth stage rotor of this eight stage transonic compressor. Of these eight stages, the first four have been designed and tested : rotors 35, 36, 37 and 38. For more information, |
* Original technical report [(cite: | * Original technical report [(cite: | ||
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* Picture : | * Picture : | ||
{{ : | {{ : | ||
- | < | + | < |
- | < | + | * < |
author | author | ||
title = {Rotor 35 - Rotor 38 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | title = {Rotor 35 - Rotor 38 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
- | note = {\href{https:// | + | year = {1977}, |
+ | url | ||
</ | </ | ||
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^ aspect ratio | [-] | 1.63 | | ^ aspect ratio | [-] | 1.63 | | ||
^ number of blades | ^ number of blades | ||
- | ^ rotative | + | ^ nominal rotation |
==== Material properties | ==== Material properties | ||
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^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 3761.51 | + | | 1 | 1B | 3761.51 |
| 2 | 1T | 13484.22 | | 2 | 1T | 13484.22 | ||
| 3 | 2B | 14745.63 | | 3 | 2B | 14745.63 | ||
+ | ====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 ===== | ||
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^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 3789.68 | + | | 1 | 1B | 3789.68 |
| 2 | 1T | 13601.09 | | 2 | 1T | 13601.09 | ||
| 3 | 2B | 14970.57 | | 3 | 2B | 14970.57 | ||
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^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | 1B | 3789.92 | + | | 1 | 1B | 3789.92 |
| 2 | 1T | 13606.43 | | 2 | 1T | 13606.43 | ||
| 3 | 2B | 14983.45 | | 3 | 2B | 14983.45 | ||
+ | ====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) </ | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
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===== À propos ===== | ===== À propos ===== | ||
- | Le rotor 38 appartient à un programme de recherche visant à étudier une conception de compresseur possédant un grand taux de compression (20:1). Il est donc le rotor du quatrième étage de ce compresseur transsonique de huit étages. Parmi ces huit étages, les quatre premiers ont été conçus et testés, ils correspondent aux rotors 35, 36, 37 et 38. Pour plus d' | + | Le rotor 38 appartient à un programme de recherche visant à étudier une conception de compresseur possédant un grand taux de compression (20:1). Il est donc le rotor du quatrième étage de ce compresseur transsonique de huit étages. Parmi ces huit étages, les quatre premiers ont été conçus et testés, ils correspondent aux rotors 35, 36, 37 et 38. Pour plus d' |
* Rapport technique original[(cite: | * Rapport technique original[(cite: | ||
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{{ : | {{ : | ||
< | < | ||
- | < | + | * < |
author | author | ||
title = {Rotor 35 - Rotor 38 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | title = {Rotor 35 - Rotor 38 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
- | note = {\href{https:// | + | year = {1977}, |
+ | url | ||
</ | </ | ||
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^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
==== Propriétés matériau | ==== Propriétés matériau | ||
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^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 3761, | + | | 1 | 1F | 3761, |
| 2 | 1T | 13484, | | 2 | 1T | 13484, | ||
| 3 | 2F | 14745, | | 3 | 2F | 14745, | ||
+ | ====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 | 3789, | + | | 1 | 1F | 3789, |
| 2 | 1T | 13601, | | 2 | 1T | 13601, | ||
| 3 | 2F | 14970, | | 3 | 2F | 14970, | ||
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^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 3789, | + | | 1 | 1F | 3789, |
| 2 | 1T | 13606, | | 2 | 1T | 13606, | ||
| 3 | 2F | 14983, | | 3 | 2F | 14983, | ||
+ | ====Diagramme de Campbell==== | ||
+ | Comparaison de l' | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
</ | </ |
- public/modeles/rotor_38/accueil.1680017112.txt.gz
- Dernière modification : 2023/04/05 08:59
- (modification externe)