Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente |
public:modeles:rotor_57:accueil [2023/04/06 15:30] – solenekojtych | public:modeles:rotor_57:accueil [2023/04/21 15:20] (Version actuelle) – solenekojtych |
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====== Rotor 57 ====== | ====== Rotor 57 ====== |
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<tabs> | <tabs> |
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<btn type="warning" size="md" modal="modal_en">Downloadable files</btn> | |
<modal id="modal_en" title="Open access"> | <callout type="warning" icon="true"> |
**[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/nasa/rotor57|Git project]]** | This model is not public, as there were problems in the computation of eigenfrequencies with code Aster (see the bottom of the page). |
</modal> | </callout> |
===== About ===== | ===== About ===== |
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* Original technical report [(cite:moore1979design>Moore R. D., Osborn W. M. «Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage» 1979. {{ https://ntrs.nasa.gov/citations/19790023042|pdf}})]: <code>@TechReport{moore1979design, | * Original technical report [(cite:moore1979design>Moore R. D., Osborn W. M. «Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage» 1979. {{ https://ntrs.nasa.gov/citations/19790023042|pdf}})]: <code>@TechReport{moore1979design, |
author = {Moore, Royce D. and Osborn, Walter M.}, | author = {Moore, Royce D. and Osborn, Walter M.}, |
title = {Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage}, | date = {1979}, |
institution = {NASA Lewis Research Center Cleveland, OH, United States}, | institution = {NASA Lewis Research Center Cleveland, OH, United States}, |
note = {NASA-TP-1502, url~: \url{https://ntrs.nasa.gov/citations/19790023042}, 1979}} | title = {Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage}, |
| number = {NASA-TP-1502}, |
| url = {https://ntrs.nasa.gov/citations/19790023042}, |
| } |
</code> | </code> |
* Picture : | * Picture : |
<caption>Fig1. https://ntrs.nasa.gov/citations/19790023042 p.56</caption> | <caption>Fig1. https://ntrs.nasa.gov/citations/19790023042 p.56</caption> |
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===== Useful documents ===== | |
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* PDF of the NASA report : {{ :public:modeles:rotor_57:rotor57.pdf |}} | <callout type="info" icon="true" title="Useful documents"> |
* CSV file of the blade geometry : {{ :public:modeles:rotor_57:rotor57_original.csv |}} | * {{ :public:modeles:rotor_57:rotor57.pdf | NASA technical report}} (.pdf) |
| * {{ :public:modeles:rotor_57:rotor57_original.csv | geometrical parameters file}} (.csv), usable as input of OpenMCAD[(cite:Kojtych_2022_gene_aubes>Kojtych S., Batailly A. «OpenMCAD, an open blade generator: from Multiple-Circular-Arc profiles to Computer-Aided Design model» 2022. {{ https://hal.science/hal-03923093|code en libre accès}})] to generate reference blade models. |
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===== Geometry ===== | ===== Reference blade ===== |
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| The **reference blade** is defined with multiple-circular arc profiles[(cite:Crouse_1969_computer)] given in the original NASA report[(cite:moore1979design)]. Corresponding models are computed with the open-source code OpenMCAD[(cite:Kojtych_2022_gene_aubes)]. |
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| ==== Geometry ==== |
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The geometry of rotor 57 is described in the [[https://ntrs.nasa.gov/citations/19790023042|original NASA report]] by the following tables. The length are in centimeters and the angles in degrees. | The geometry of rotor 57 is described in the [[https://ntrs.nasa.gov/citations/19790023042|original NASA report]] by the following tables. The length are in centimeters and the angles in degrees. |
{{ :public:modeles:rotor_57:gene_aubes_nasa_geom_rotor57.png?400 |}} | {{ :public:modeles:rotor_57:gene_aubes_nasa_geom_rotor57.png?400 |}} |
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===== Aerodynamic design ===== | ==== Aerodynamic design ==== |
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^ ^ unit ^ values ^ | ^ ^ unit ^ values ^ |
^ rotative speed | [rad/s] | 1139.98 | | ^ rotative speed | [rad/s] | 1139.98 | |
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===== Material properties ===== | ==== Material properties ==== |
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The original material of the rotor 57 is not defined in the NASA report. | The original material of the rotor 57 is not defined in the NASA report. A generic titanium Ti-6Al-4V is considered: |
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Considered properties: Ti-6Al-4V, generic titanium : | |
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^ ^ unité ^ valeurs ^ | ^ ^ unité ^ valeurs ^ |
^ yield stress | [GPa] | 0.824 | | ^ yield stress | [GPa] | 0.824 | |
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First three natural frequencies (with clamped root) for the mesh: | |
- <fc #c0c0c0>(1B)</fc>: 4256.6 rad/s / 677.5 Hz | |
- <fc #c0c0c0>(2B)</fc>: 11745.8 rad/s / 1869.4 Hz | |
- <fc #c0c0c0>(1T)</fc>: 14867.1 rad/s / 2366.2 Hz | |
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===== CAD ===== | ==== CAD model ==== |
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{{ :public:modeles:rotor_57:gene_aubes_nasa_rotor57_cao.png?400 |}} | The CAD model is computed with the open source code OpenMCAD[(cite:Kojtych_2022_gene_aubes)]. |
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| <grid> |
| <col md="2"> |
| </col> |
| <col md="4"> |
| {{ :public:modeles:rotor_57:57_intra.png?200 |}} |
| <caption>pressure side</caption> |
| </col> |
| <col md="4"> |
| {{ :public:modeles:rotor_57:57_extra.png?200 |}} |
| <caption>suction side</caption> |
| </col> |
| <col md="2"> |
| </col> |
| </grid> |
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| ==== Natural frequencies ==== |
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| First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite:Kojtych_2022_gene_aubes)]: |
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| Currently not available because of a problem to compute them with aster from the mesh of the reference blade. |
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<pane id="tab-fr"> | <pane id="tab-fr"> |
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<btn type="warning" size="md" modal="modal_fr">Fichiers téléchargeables</btn> | |
<modal id="modal_fr" title="Libre accès"> | |
**[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/nasa/rotor57|lien vers le projet Git]]** | <callout type="warning" icon="true"> |
</modal> | Ce modèle n'est pas public, en raison de problèmes sur le calcul des fréquences propres avec code Aster (voir bas de page) |
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===== À propos ===== | ===== À propos ===== |
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* Rapport technique original [(cite:moore1979design>)]: <code>@TechReport{moore1979design, | * Rapport technique original [(cite:moore1979design>)]: <code>@TechReport{moore1979design, |
author = {Moore, Royce D. and Osborn, Walter M.}, | author = {Moore, Royce D. and Osborn, Walter M.}, |
title = {Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage}, | date = {1979}, |
institution = {NASA Lewis Research Center Cleveland, OH, United States}, | institution = {NASA Lewis Research Center Cleveland, OH, United States}, |
note = {NASA-TP-1502, url~: \url{https://ntrs.nasa.gov/citations/19790023042}, 1979}} | title = {Aerodynamic Performance of 1.38-Pressure-Ratio, Variable-Pitch Fan Stage}, |
| number = {NASA-TP-1502}, |
| url = {https://ntrs.nasa.gov/citations/19790023042}, |
| } |
</code> | </code> |
* Photographie : | * Photographie : |
<caption>Fig1. https://ntrs.nasa.gov/citations/19790023042 p.56</caption> | <caption>Fig1. https://ntrs.nasa.gov/citations/19790023042 p.56</caption> |
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===== Documents utiles ===== | |
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* PDF du rapport de la NASA : {{ :public:modeles:rotor_57:rotor57.pdf |}} | <callout type="info" icon="true" title="Documents utiles"> |
* Fichier CSV de la géométrie : {{ :public:modeles:rotor_57:rotor57_original.csv |}} | * {{ :public:modeles:rotor_57:rotor57.pdf | rapport technique original}} de la NASA (.pdf) |
| * {{ :public:modeles:rotor_57:rotor57_original.csv| fichier de paramètres géométriques}} (.csv), utilisable en entrée de OpenMCAD[(cite:Kojtych_2022_gene_aubes>Kojtych S., Batailly A. «OpenMCAD, an open blade generator: from Multiple-Circular-Arc profiles to Computer-Aided Design model» 2022. {{ https://hal.science/hal-03923093|code en libre accès}})] pour générer l'aube de référence |
| </callout> |
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===== Géométrie ===== | |
| ===== Aube de référence ===== |
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| L'**aube de référence** est définie par des profils de type arcs circulaires multiples[(cite:Crouse_1969_computer>Crouse //et al//. «A computer program for composing compressor blading from simulated circular-arc elements on conical surfaces » 1969. NASA-TN-D-5437. {{ https://ntrs.nasa.gov/citations/19690027504|pdf}})], donnés dans le rapport technique original de la NASA[(cite:moore1979design)]. Les modèles associés sont obtenus avec le code en libre accès OpenMCAD[(cite:Kojtych_2022_gene_aubes)]. |
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| ==== Géométrie ==== |
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La géométrie du rotor 57 est décrite dans le [[https://ntrs.nasa.gov/citations/19790023042|rapport d'origine de la NASA]] par les tableaux suivants. Les grandeurs sont en centimètres et en degrés. | La géométrie du rotor 57 est décrite dans le [[https://ntrs.nasa.gov/citations/19790023042|rapport d'origine de la NASA]] par les tableaux suivants. Les grandeurs sont en centimètres et en degrés. |
{{ :public:modeles:rotor_57:gene_aubes_nasa_geom_rotor57.png?400 |}} | {{ :public:modeles:rotor_57:gene_aubes_nasa_geom_rotor57.png?400 |}} |
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===== Caractéristiques aérodynamiques ===== | ==== Caractéristiques aérodynamiques ==== |
^ ^ unités ^ valeurs ^ | ^ ^ unités ^ valeurs ^ |
^ taux de compression | [-] | 1,38 | | ^ taux de compression | [-] | 1,38 | |
^ vitesse de rotation | [rad/s] | 1139,98 | | ^ vitesse de rotation | [rad/s] | 1139,98 | |
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===== Propriétés matériau ===== | ==== Propriétés matériau ==== |
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Le matériau original du rotor 57 n'est pas défini dans le rapport de la NASA. | Le matériau original du rotor 57 n'est pas défini dans le rapport de la NASA. Un alliage de titane Ti-6Al-4v est considéré : |
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Propriétés considérées : alliage de titane Ti-6Al-4v : | ^ ^ unités ^ valeurs ^ |
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^ ^ unité ^ valeurs ^ | |
^ alliage | [-] | Ti-6Al-4v | | ^ alliage | [-] | Ti-6Al-4v | |
^ module d'Young | [GPa] | 108 | | ^ module d'Young | [GPa] | 108 | |
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Fréquences des trois premiers modes (noeuds de la base encastrés) pour le maillage : | |
- <fc #c0c0c0>(1B)</fc>: 4256,6 rad/s / 677,5 Hz | |
- <fc #c0c0c0>(2B)</fc>: 11745,8 rad/s / 1869,4 Hz | |
- <fc #c0c0c0>(1T)</fc>: 14867,1 rad/s / 2366,2 Hz | |
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===== CAO ===== | |
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{{ :public:modeles:rotor_57:gene_aubes_nasa_rotor57_cao.png?400 |}} | ==== Modèle CAO ==== |
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</pane> | <grid> |
</tabs> | <col md="2"> |
| </col> |
| <col md="4"> |
| {{ :public:modeles:rotor_57:57_intra.png?200 |}} |
| <caption>pressure side</caption> |
| </col> |
| <col md="4"> |
| {{ :public:modeles:rotor_57:57_extra.png?200 |}} |
| <caption>suction side</caption> |
| </col> |
| <col md="2"> |
| </col> |
| </grid> |
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| ==== Fréquences propres ==== |
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| Fréquences des trois premiers modes (noeuds du pied d'aube encastrés) pour le maillage obtenu avec OpenMCAD[(cite:Kojtych_2022_gene_aubes)] : |
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| Il y a actuellement un problème sur le calcul des fréquences propres dans Aster. |
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| </pane> |
| </tabs> |
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