Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente Prochaine révisionLes deux révisions suivantes | ||
ressources:logiciels:gene_aubes_nasa:geneaubeslisteaubes:rotor_4:accueil [2022/09/13 13:41] – [Modèle original] antoinelemery | public:modeles:rotor_04:accueil [2023/02/21 22:05] – [Fréquences propres] ikrambeghdadi | ||
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- | **[[https:// | + | **[[https:// |
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Then, another series of tests has been conducted with blade tip solidities of 1.3 (rotor 14), 1.5 (rotor 8), and 1.7 (rotor 12). Tip solidity are being changed by varying the number of blades while maintaining the same velocity diagrams and flow path. These stages were designed such that the tip solidity of both the rotor and stator blades are the same. | Then, another series of tests has been conducted with blade tip solidities of 1.3 (rotor 14), 1.5 (rotor 8), and 1.7 (rotor 12). Tip solidity are being changed by varying the number of blades while maintaining the same velocity diagrams and flow path. These stages were designed such that the tip solidity of both the rotor and stator blades are the same. | ||
- | * Original technical report [(cite:reid1978design>Reid. «Design and overall performance | + | * Original technical report [(cite:janetzke1972design>Janetzke. «Performance |
- | author | + | |
- | title = {Design and overall performance | + | < |
+ | author | ||
+ | title = {Performance | ||
institution = {NASA Lewis Research Center Cleveland, OH, United States}, | institution = {NASA Lewis Research Center Cleveland, OH, United States}, | ||
- | note = {NASA-TP-1337, url~: \url{https:// | + | note = {NASA-TM X-2449, url~: \url{https:// |
</ | </ | ||
+ | |||
+ | |||
* Picture : | * Picture : | ||
- | {{ :ressources:logiciels: | + | {{ :public:modeles: |
< | < | ||
===== Useful documents | ===== Useful documents | ||
- | + | * [[https:// | |
- | * PDF of the NASA report : {{ :ressources:logiciels: | + | * PDF of the NASA report : {{ :public:modeles: |
- | * CSV file of the blade geometry : {{ :ressources: | + | * CSV file of the blade geometry : {{ :public:modeles: |
===== Geometry ===== | ===== Geometry ===== | ||
The geometry of rotor 4 is described in the [[https:// | The geometry of rotor 4 is described in the [[https:// | ||
- | {{ :ressources:logiciels: | + | {{ :public:modeles: |
===== Aerodynamic design | ===== Aerodynamic design | ||
Ligne 63: | Ligne 67: | ||
First three natural frequencies (with clamped root) for the mesh: | First three natural frequencies (with clamped root) for the mesh: | ||
- | - <fc # | + | - <fc # |
- | - <fc # | + | - <fc # |
- | - <fc # | + | - <fc # |
- | ===== CAD ===== | + | ==== CAD model ==== |
- | {{ :ressources:logiciels:gene_aubes_nasa:geneaubeslisteaubes:rotor_4:gene_aubes_nasa_rotor4_cao.png?400 |}} | + | The CAD model is computed with the open source code OpenMCAD[(cite: |
+ | |||
+ | < | ||
+ | <col md=" | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{:public:modeles:rotor_04:4_intra.png? | ||
+ | < | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{:public:modeles: | ||
+ | < | ||
+ | </ | ||
+ | <col md=" | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | ==== Natural frequencies ==== | ||
+ | |||
+ | |||
+ | First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite: | ||
+ | |||
+ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
+ | | 1 | 1F | 1018, | ||
+ | | 2 | 1T | 3542, | ||
+ | | 3 | 2F | 6094, | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ===== Initial blade ===== | ||
+ | |||
+ | The **initial blade** is defined with in-house LAVA parameters[(cite: | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ==== Natural frequencies ==== | ||
+ | |||
+ | First three natural frequencies (with clamped root) | ||
+ | |||
+ | * from the whole mesh: | ||
+ | |||
+ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
+ | | 1 | 1F | 1019, | ||
+ | | 2 | 1T | 3539, | ||
+ | | 3 | 2F | 6074, | ||
+ | |||
+ | |||
+ | * from the reduced order model: | ||
+ | |||
+ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
+ | | 1 | 1F | 1019, | ||
+ | | 2 | 1T | 3540, | ||
+ | | 3 | 2F | 6075, | ||
</ | </ | ||
- | + | ||
<pane id=" | <pane id=" | ||
<btn type=" | <btn type=" | ||
<modal id=" | <modal id=" | ||
- | **[[https:// | + | **[[https:// |
</ | </ | ||
Ligne 87: | Ligne 145: | ||
Ensuite, une autre série d' | Ensuite, une autre série d' | ||
- | * Rapport technique original [(cite:reid1978design>Reid. «Design and overall performance | + | * Rapport technique original [(cite:janetzke1972design>Janetzke. «Performance |
- | author | + | @TechReport{janetzke1972design, |
- | title = {Design and overall performance of four highly loaded, high speed inlet stages for an advanced high-pressure-ratio core compressor}, | + | author |
- | institution = {NASA Lewis Research Center Cleveland, OH, United States}, | + | |
- | note | + | institution |
+ | | ||
+ | number | ||
+ | | ||
+ | } | ||
</ | </ | ||
+ | |||
* Photographie : | * Photographie : | ||
- | {{ :ressources:logiciels: | + | {{ :public:modeles: |
< | < | ||
===== Documents utiles | ===== Documents utiles | ||
- | + | * [[https:// | |
- | * PDF du rapport de la NASA : {{ :ressources:logiciels: | + | * PDF du rapport de la NASA : {{ :public:modeles: |
- | * Fichier CSV de la géométrie : {{ :ressources: | + | * Fichier CSV de la géométrie : {{ :public:modeles: |
===== Géométrie ===== | ===== Géométrie ===== | ||
Ligne 107: | Ligne 170: | ||
La géométrie du rotor 4 est décrite dans le [[https:// | La géométrie du rotor 4 est décrite dans le [[https:// | ||
- | {{ :ressources:logiciels: | + | {{ :public:modeles: |
===== Caractéristiques aérodynamiques | ===== Caractéristiques aérodynamiques | ||
^ ^ unités | ^ ^ unités | ||
- | ^ taux de compression | + | ^ taux de compression |
- | ^ débit massique | + | ^ débit massique |
- | ^ vitesse en tête | [m/s] | 420.6 | | + | ^ vitesse en tête | [m/s] | 420,6 | |
- | ^ solidité en tête | + | ^ solidité en tête |
^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
===== Propriétés matériau | ===== Propriétés matériau | ||
- | Le matériau du rotor 5 est un alliage à base de nickel : un acier maraging de grade 200 | + | Le matériau du rotor 4 est un alliage à base de nickel : un acier maraging de grade 200 |
^ | ^ | ||
Ligne 132: | Ligne 195: | ||
Fréquences des trois premiers modes (noeuds de la base encastrés) pour le maillage : | Fréquences des trois premiers modes (noeuds de la base encastrés) pour le maillage : | ||
- | - <fc # | + | - <fc # |
- | - <fc # | + | - <fc # |
- | - <fc # | + | - <fc # |
- | ===== CAO ===== | + | ==== Modèle |
- | {{ :ressources: | + | Le modèle CAO est obtenu avec OpenMCAD [(cite:Kojtych_2022_gene_aubes)]. |
+ | < | ||
+ | <col md=" | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{: | ||
+ | < | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{: | ||
+ | < | ||
+ | </ | ||
+ | <col md=" | ||
+ | </ | ||
+ | </ | ||
- | </ | ||
- | </ | ||
+ | ==== Fréquences propres ==== | ||
+ | |||
+ | Fréquences des trois premiers modes (noeuds du pied d'aube encastrés) pour le maillage obtenu avec OpenMCAD[(cite: | ||
+ | |||
+ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
+ | | 1 | ||
+ | | 2 | ||
+ | | 3 | ||
+ | |||
+ | ===== Aube initiale ===== | ||
+ | |||
+ | L' | ||
+ | obtenus à partir du modèle CAO de l'aube de référence. L'aube initiale est classiquement utilisée comme point de départ dans le cadre de procédures d' | ||
+ | |||
+ | |||
+ | ==== Fréquences propres ==== | ||
+ | Fréquences des trois premiers modes (noeuds du pied d'aube encastrés), | ||
+ | |||
+ | * pour le maillage complet : | ||
+ | |||
+ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
+ | | 1 | 1F | 1019, | ||
+ | | 2 | 1T | 3539, | ||
+ | | 3 | 2F | 6074, | ||
+ | |||
+ | |||
+ | * pour le modèle réduit : | ||
+ | |||
+ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
+ | | 1 | 1F | 1019, | ||
+ | | 2 | 1T | 3540, | ||
+ | | 3 | 2F | 6075, | ||
+ | |||
+ | |||
+ | </ | ||
+ | </ | ||
- public/modeles/rotor_04/accueil.txt
- Dernière modification : 2023/04/17 20:36
- de solenekojtych