Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente |
public:modeles:rotor_66:accueil [2023/04/01 18:32] – ikrambeghdadi | public:modeles:rotor_66:accueil [2024/08/02 16:33] (Version actuelle) – [Natural frequencies] rafaelbarraud |
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**[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|Git project]]** | **[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|Git project]]** |
</modal> | </modal> |
===== Original model ===== | ===== About ===== |
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Rotor 66 is part of a 51 centimeter-diameter, five-stage compressor having a design weight flow of 29.7 kilograms per second with a pressure ratio of 9.27. Performance data obtained from tests indicated that the first stage was not meeting its design performance. | Rotor 66 is part of a 51 centimeter-diameter, five-stage compressor having a design weight flow of 29.7 kilograms per second with a pressure ratio of 9.27. Performance data obtained from tests indicated that the first stage was not meeting its design performance. |
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* Original technical report [(cite:urasek1976design>Urasek. «Performance of inlet stage of transonic compressor» 1976 {{ https://ntrs.nasa.gov/citations/19760009935|pdf}})]: <code>@TechReport{urasek1976design, | * Original technical report [(cite:urasek1976design>Urasek D. C. //et at// «Performance of inlet stage of transonic compressor» 1976 {{ https://ntrs.nasa.gov/citations/19760009935|pdf}})]: <code>@TechReport{urasek1976design, |
author = {Urasek, Donald C. and Steinke, Ronald J. and Lewis, George W.}, | author = {Urasek, Donald C. and Steinke, Ronald J. and Lewis, George W.}, |
date = {1976}, | date = {1976}, |
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{{ :public:modeles:rotor_66:gene_aubes_nasa_image_rotor66.png?300 |}} | {{ :public:modeles:rotor_66:gene_aubes_nasa_image_rotor66.png?300 |}} |
<caption>Fig1. https://catalog.archives.gov/id/17423368 </caption> | <caption>Fig. 1 https://catalog.archives.gov/id/17423368 </caption> |
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<code>@Misc{brown1974records, | * <code>@Misc{brown1974records, |
author = {Brown, M.}, | author = {Brown, M.}, |
title = {First stage rotor wheel from 5 stage compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, 1903 - 2006. {P}hotographs relating to agency activities, facilities and personnel, 1973 - 2013}, | title = {First stage rotor wheel from 5 stage compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, 1903 - 2006. {P}hotographs relating to agency activities, facilities and personnel, 1973 - 2013}, |
note = {\href{https://catalog.archives.gov/id/17423368}{https://catalog.archives.gov/id/17423368}, 1974 }, % for Fig. 1} | year = {1974}, |
| url = {https://catalog.archives.gov/id/17423368}} |
</code> | </code> |
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* [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|downloadable models]] (Git project) | * [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|downloadable models]] (Git project) |
* {{ :public:modeles:rotor_66:rotor66.pdf | NASA technical report}} (.pdf) | * {{ :public:modeles:rotor_66:rotor66.pdf | NASA technical report}} (.pdf) |
* {{ :public:modeles:rotor_66:rotor66_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. | * {{ :public:modeles:rotor_66:rotor66_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|open source code}})] to generate reference blade models. |
</callout> | </callout> |
===== Reference blade ===== | ===== Reference blade ===== |
^ aspect ratio | [-] | 3.1 | | ^ aspect ratio | [-] | 3.1 | |
^ number of blades | [-] | 57 | | ^ number of blades | [-] | 57 | |
^ rotative speed | [rad/s] | 1679.94 | | ^ nominal rotation speed $\omega_n$ | [rad/s] | 1679.94 | |
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==== Material properties ==== | ==== Material properties ==== |
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The original material of the rotor 66 is not defined in the NASA report. | The original material of the rotor 66 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 ^ |
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^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ | ^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ |
| 1 | 1B | 1249.77 | 198.907 | | | 1 | 1B | 1249.77 | 198.91 | |
| 2 | 2B | 4502.58 | 716.609 | | | 2 | 2B | 4502.58 | 716.61 | |
| 3 | 1T | 7703.69 | 1226.08 | | | 3 | 1T | 7703.69 | 1226.08 | |
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| ====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:Kojtych_2022_gene_aubes)]: |
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| {{ :public:modeles:rotor_66:campbell_eng_66_ref.png?500 }} |
| <caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal rotation speed ωₙ = 1 679.94 rad/s)</caption> |
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| * {{ :public:modeles:rotor_66:campbell_eng_66_ref.pdf |graph (.pdf)}} |
| * {{ :public:modeles:rotor_66:campbell_66_ref.csv |Campbell data (.csv)}} |
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^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ | ^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ |
| 1 | 1B | 1248.51 | 198.706 | | | 1 | 1B | 1248.51 | 198.71 | |
| 2 | 2B | 4487.89 | 714.27 | | | 2 | 2B | 4487.89 | 714.27 | |
| 3 | 1T | 7721.85 | 1228.97 | | | 3 | 1T | 7721.85 | 1228.97 | |
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^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ | ^ Mode ^ Type ^ Natural angular frequency (rad/sec) ^ Natural frequency (Hz) ^ |
| 1 | 1B | 1248.525 | 198.709 | | | 1 | 1B | 1248.53 | 198.71 | |
| 2 | 2B | 4488.921 | 714.434 | | | 2 | 2B | 4488.92 | 714.43 | |
| 3 | 1T | 7723.73 | 1229.27 | | | 3 | 1T | 7723.73 | 1229.27 | |
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| ====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: |
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| {{ :public:modeles:rotor_66:campbell_eng_66_ini.png?500 }} |
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| <caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal speed ωₙ = 1 679.94 rad/s), |
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| initial blade (orange), reference blade (gray) </caption> |
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| * {{ :public:modeles:rotor_66:campbell_eng_66_ini.pdf |graph (.pdf)}} |
| * {{ :public:modeles:rotor_66:campbell_66_ini.csv |Campbell data (.csv)}} |
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</modal> | </modal> |
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===== Modèle original ===== | ===== À propos ===== |
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Le rotor 66 fait partie d'un compresseur à cinq étages de 51 centimètres de diamètre ayant un débit nominal de 29,7 kilogrammes par seconde et un taux de compression de 9,27. Les données de performance obtenues lors de tests ont indiqué que le premier étage n'atteignait pas ses performances de conception. | Le rotor 66 fait partie d'un compresseur à cinq étages de 51 centimètres de diamètre ayant un débit nominal de 29,7 kilogrammes par seconde et un taux de compression de 9,27. Les données de performance obtenues lors de tests ont indiqué que le premier étage n'atteignait pas ses performances de conception. |
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* Rapport technique original [(cite:urasek1976design>Urasek. «Performance of inlet stage of transonic compressor» 1976 {{ https://ntrs.nasa.gov/citations/19760009935|pdf}})]: <code>@TechReport{urasek1976design, | * Rapport technique original [(cite:urasek1976design>)]: <code>@TechReport{urasek1976design, |
author = {Urasek, Donald C. and Steinke, Ronald J. and Lewis, George W.}, | author = {Urasek, Donald C. and Steinke, Ronald J. and Lewis, George W.}, |
date = {1976}, | date = {1976}, |
* Photographie : | * Photographie : |
{{ :public:modeles:rotor_66:gene_aubes_nasa_image_rotor66.png?300 |}} | {{ :public:modeles:rotor_66:gene_aubes_nasa_image_rotor66.png?300 |}} |
<caption>Fig1. https://catalog.archives.gov/id/17423368 </caption> | <caption>Fig. 1 https://catalog.archives.gov/id/17423368 </caption> |
| |
<code>@Misc{brown1974records, | * <code>@Misc{brown1974records, |
author = {Brown, M.}, | author = {Brown, M.}, |
title = {First stage rotor wheel from 5 stage compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, 1903 - 2006. {P}hotographs relating to agency activities, facilities and personnel, 1973 - 2013}, | title = {First stage rotor wheel from 5 stage compressor. {R}ecords of the {N}ational {A}eronautics and {S}pace {A}dministration, 1903 - 2006. {P}hotographs relating to agency activities, facilities and personnel, 1973 - 2013}, |
note = {\href{https://catalog.archives.gov/id/17423368}{https://catalog.archives.gov/id/17423368}, 1974 }, % for Fig. 1} | year = {1974}, |
| url = {https://catalog.archives.gov/id/17423368}} |
</code> | </code> |
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* [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|modèles téléchargeables]] (lien vers projet Git) | * [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor66|modèles téléchargeables]] (lien vers projet Git) |
* {{ :public:modeles:rotor_66:rotor66.pdf | rapport technique original}} de la NASA (.pdf) | * {{ :public:modeles:rotor_66:rotor66.pdf | rapport technique original}} de la NASA (.pdf) |
* {{ :public:modeles:rotor_66:rotor66_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 | * {{ :public:modeles:rotor_66:rotor66_original.csv | fichier de paramètres géométriques}} (.csv), utilisable en entrée de OpenMCAD[(cite:Kojtych_2022_gene_aubes>)] pour générer l'aube de référence |
</callout> | </callout> |
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^ allongement | [-] | 3,1 | | ^ allongement | [-] | 3,1 | |
^ nombre d'aubes | [-] | 57 | | ^ nombre d'aubes | [-] | 57 | |
^ vitesse de rotation | [rad/s] | 1679,94 | | ^ vitesse de rotation nominale $\omega_n$ | [rad/s] | 1679,94 | |
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==== Propriétés matériau ==== | ==== Propriétés matériau ==== |
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Le matériau original du rotor 66 n'est pas défini dans le rapport de la NASA. | Le matériau original du rotor 66 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 : | |
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^ ^ unité ^ valeurs ^ | ^ ^ unité ^ valeurs ^ |
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^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ | ^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ |
| 1 | 1B | 1249,77 | 198,907 | | | 1 | 1F | 1249,77 | 198,907 | |
| 2 | 2B | 4502,58 | 716,609 | | | 2 | 2F | 4502,58 | 716,609 | |
| 3 | 1T | 7703,69 | 1226,08 | | | 3 | 1T | 7703,69 | 1226,08 | |
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| ====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:Kojtych_2022_gene_aubes)]: |
| {{ :public:modeles:rotor_66:campbell_66_ref.png?500 }} |
| <caption>diagramme de Campbell calculé avec une précharge centrifuge linéaire, noeuds du pied d'aube encastrés (vitesse nominale ωₙ = 1 679,94 rad/s)</caption> |
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| * {{ :public:modeles:rotor_66:campbell_66_ref.pdf |graphique (.pdf)}} |
| * {{ :public:modeles:rotor_66:campbell_66_ref.csv |données du Campbell (.csv)}} |
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===== Aube initiale ===== | ===== Aube initiale ===== |
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^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ | ^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ |
| 1 | 1B | 1248,51 | 198,706 | | | 1 | 1F | 1248,51 | 198,706 | |
| 2 | 2B | 4487,89 | 714,27 | | | 2 | 2F | 4487,89 | 714,27 | |
| 3 | 1T | 7721,85 | 1228,97 | | | 3 | 1T | 7721,85 | 1228,97 | |
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^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ | ^ Mode ^ Type ^ Pulsation propre (rad/sec) ^ Fréquence propre (Hz) ^ |
| 1 | 1B | 1248,525 | 198,709 | | | 1 | 1F | 1248,525 | 198,709 | |
| 2 | 2B | 4488,921 | 714,434 | | | 2 | 2F | 4488,921 | 714,434 | |
| 3 | 1T | 7723,73 | 1229,27 | | | 3 | 1T | 7723,73 | 1229,27 | |
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| ====Diagramme de Campbell==== |
| Comparaison de l'évolution des fréquences propres des 3 premiers modes, en fonction de la vitesse de rotation, pour l'aube initiale et de référence: |
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| {{ :public:modeles:rotor_66:campbell_66_ini.png?500 }} |
| <caption>diagramme de Campbell calculé avec une précharge centrifuge linéaire, noeuds du pied d'aube encastrés (vitesse nominale ωₙ = 1 679,94 rad/s), |
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| aube initiale (orange), aube de référence (grise)</caption> |
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| * {{ :public:modeles:rotor_66:campbell_66_ini.pdf |graphique (.pdf)}} |
| * {{ :public:modeles:rotor_66:campbell_66_ini.csv |données du Campbell (.csv)}} |
</pane> | </pane> |
</tabs> | </tabs> |