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public:modeles:rotor_04:accueil [2022/09/16 10:18] – ↷ Page déplacée de ressources:logiciels:gene_aubes_nasa:geneaubeslisteaubes:rotor_4:accueil à public:modeles:rotor_04:accueil alainbatailly | public:modeles:rotor_04:accueil [2023/02/21 22:05] – [Fréquences propres] ikrambeghdadi | ||
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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: | + | * Original technical report [(cite: |
+ | |||
+ | < | ||
author | author | ||
title = {Performance of 1380-foot-per-second-tip-speed axial-flow compressor rotor with blade tip solidity of 1.1}, | title = {Performance of 1380-foot-per-second-tip-speed axial-flow compressor rotor with blade tip solidity of 1.1}, | ||
Ligne 25: | Ligne 27: | ||
note = {NASA-TM X-2449, 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 66: | Ligne 70: | ||
- <fc # | - <fc # | ||
- <fc # | - <fc # | ||
- | ===== CAD ===== | ||
- | {{ :ressources:logiciels:gene_aubes_nasa:geneaubeslisteaubes:rotor_4:gene_aubes_nasa_rotor4_cao.png?400 |}} | + | ==== CAD model ==== |
+ | |||
+ | 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=" | ||
Ligne 86: | Ligne 145: | ||
Ensuite, une autre série d' | Ensuite, une autre série d' | ||
- | * Rapport technique original [(cite: | + | * Rapport technique original [(cite: |
- | author | + | @TechReport{janetzke1972design, |
- | title | + | author |
- | institution = {NASA Lewis Research Center Cleveland, OH, United States}, | + | |
- | note | + | institution |
+ | | ||
+ | | ||
+ | | ||
+ | } | ||
</ | </ | ||
+ | |||
* 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 106: | 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 | ||
Ligne 121: | Ligne 185: | ||
===== 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 135: | Ligne 199: | ||
- <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