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 | ||
public:modeles:rotor_35:accueil [2022/09/16 10:11] – supprimée - modification externe (Unknown date) 127.0.0.1 | public:modeles:rotor_35:accueil [2023/04/15 13:28] – [Material properties] ikrambeghdadi | ||
---|---|---|---|
Ligne 1: | Ligne 1: | ||
+ | ====== Rotor 35 ====== | ||
+ | |||
+ | < | ||
+ | * [[# | ||
+ | * [[# | ||
+ | <pane id=" | ||
+ | |||
+ | |||
+ | <btn type=" | ||
+ | <modal id=" | ||
+ | **[[https:// | ||
+ | </ | ||
+ | ===== Original model ===== | ||
+ | |||
+ | Rotor 35 is part of a research program to study a advanced-core compressor design with a high compression ratio (20:1). It is therefore the first 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: | ||
+ | < | ||
+ | author | ||
+ | date = {1982}, | ||
+ | institution | ||
+ | title = {Performance of single-stage axial-flow transonic compressor with rotor and stator aspect ratios of 1.63 and 1.78, respectively, | ||
+ | number | ||
+ | url = {https:// | ||
+ | } | ||
+ | </ | ||
+ | * Picture : | ||
+ | {{ : | ||
+ | < | ||
+ | * < | ||
+ | author | ||
+ | title = {Rotor 35 - Rotor 35 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
+ | url = {https:// | ||
+ | </ | ||
+ | |||
+ | <callout type=" | ||
+ | * [[https:// | ||
+ | * PDF of the NASA report : {{ : | ||
+ | * CSV file of the blade geometry : {{ : | ||
+ | </ | ||
+ | |||
+ | ===== Reference blade ===== | ||
+ | |||
+ | The **reference blade** is defined with multiple-circular arc profiles[(cite: | ||
+ | |||
+ | |||
+ | ===== Geometry ===== | ||
+ | |||
+ | The geometry of rotor 35 is described in the [[https:// | ||
+ | {{ : | ||
+ | |||
+ | ===== Aerodynamic design | ||
+ | |||
+ | ^ ^ unit ^ values | ||
+ | ^ pressure ratio | [-] | 1.82 | | ||
+ | ^ mass flow | ||
+ | ^ tip speed | ||
+ | ^ tip solidity | ||
+ | ^ aspect ratio | [-] | 1.19 | | ||
+ | ^ number of blades | ||
+ | ^ rotative speed | [rad/ | ||
+ | ===== Material properties | ||
+ | |||
+ | Rotor 35 is made of a 200-grade maraging steel[(cite: | ||
+ | |||
+ | Considered properties of 18-Ni-200-maraging steel : | ||
+ | |||
+ | ^ | ||
+ | ^ alloy | [-] | 18-Ni-200-maraging | ||
+ | ^ Young' | ||
+ | ^ density | ||
+ | ^ Poisson' | ||
+ | ^ yield stress | ||
+ | |||
+ | |||
+ | ==== CAD model ==== | ||
+ | |||
+ | The CAD model is computed with the open source code OpenMCAD[(cite: | ||
+ | |||
+ | < | ||
+ | <col md=" | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{: | ||
+ | < | ||
+ | </ | ||
+ | <col md=" | ||
+ | {{: | ||
+ | < | ||
+ | </ | ||
+ | <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 | 1B | 5000.55 | ||
+ | | 2 | 1T | 14833.91 | ||
+ | | 3 | 2B | 18699.83 | ||
+ | |||
+ | |||
+ | |||
+ | ===== 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 | 1B | 5037.31 | ||
+ | | 2 | 1T | 14910.06 | ||
+ | | 3 | 2B | 18900.76 | ||
+ | |||
+ | |||
+ | * from the reduced order model: | ||
+ | |||
+ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
+ | | 1 | 1B | 5037.84 | ||
+ | | 2 | 1T | 14917.41 | ||
+ | | 3 | 2B | 18926.96 | ||
+ | |||
+ | |||
+ | |||
+ | </ | ||
+ | <pane id=" | ||
+ | |||
+ | <btn type=" | ||
+ | <modal id=" | ||
+ | **[[https:// | ||
+ | </ | ||
+ | |||
+ | ===== Modèle original ===== | ||
+ | |||
+ | Le rotor 35 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 premier 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: | ||
+ | author | ||
+ | date = {1982}, | ||
+ | institution | ||
+ | title = {Performance of single-stage axial-flow transonic compressor with rotor and stator aspect ratios of 1.63 and 1.78, respectively, | ||
+ | number | ||
+ | url = {https:// | ||
+ | } | ||
+ | </ | ||
+ | * Photographie : | ||
+ | {{ : | ||
+ | < | ||
+ | * < | ||
+ | author | ||
+ | title = {Rotor 35 - Rotor 35 - Stator 35 in casing. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, | ||
+ | url = {https:// | ||
+ | </ | ||
+ | |||
+ | |||
+ | <callout type=" | ||
+ | * [[https:// | ||
+ | * PDF du rapport de la NASA : {{ : | ||
+ | * Fichier CSV de la géométrie : {{ : | ||
+ | </ | ||
+ | |||
+ | ===== Aube de référence ===== | ||
+ | |||
+ | L' | ||
+ | |||
+ | ===== Géométrie ===== | ||
+ | |||
+ | La géométrie du rotor 35 est décrite dans le [[https:// | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | ===== Caractéristiques aérodynamiques | ||
+ | ^ ^ unités | ||
+ | ^ taux de compression | ||
+ | ^ débit massique | ||
+ | ^ vitesse en tête | [m/s] | 455 | | ||
+ | ^ solidité en tête | ||
+ | ^ allongement | ||
+ | ^ nombre d' | ||
+ | ^ vitesse de rotation | ||
+ | |||
+ | ===== Propriétés matériau | ||
+ | |||
+ | Le matériau du rotor 35 est un alliage à base de nickel : un acier maraging de grade 200[(cite: | ||
+ | |||
+ | ^ | ||
+ | ^ alliage | ||
+ | ^ module d' | ||
+ | ^ masse volumique | ||
+ | ^ coefficient de Poisson | ||
+ | ^ limite élastique | ||
+ | |||
+ | ==== Modèle CAO ==== | ||
+ | |||
+ | Le modèle CAO est obtenu avec OpenMCAD[(cite: | ||
+ | |||
+ | < | ||
+ | <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 | 1F | 1018, | ||
+ | | 2 | 1T | 3542, | ||
+ | | 3 | 2F | 6094, | ||
+ | |||
+ | |||
+ | ===== Aube initiale ===== | ||
+ | |||
+ | L' | ||
+ | |||
+ | |||
+ | ==== 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_35/accueil.txt
- Dernière modification : 2023/04/15 13:29
- de ikrambeghdadi