Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente |
public:modeles:rotor_05:accueil [2023/03/19 18:28] – ikrambeghdadi | public:modeles:rotor_05:accueil [2023/04/17 20:37] (Version actuelle) – [Material properties] solenekojtych |
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**[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|Git project]]** | **[[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|Git project]]** |
</modal> | </modal> |
===== Original model ===== | ===== About ===== |
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Rotor 5 is part of a research program to study the effects of blade row solidity on efficiency and stall margin of an axial-flow compressor rotor. It is one of a series of rotors designed with varying blade solidity achieved by changing the blade chord length : rotor 3 with a tip solidity of 1.3, rotor 4 with a tip solidity of 1.1 and rotor 5 with a tip solidity of 1.5. The results showed that the efficiency and pressure ratio were higher for a rotor with a blade tip solidity of 1.5 than for a rotor with a solidity of 1.1. | Rotor 5 is part of a research program to study the effects of blade row solidity on efficiency and stall margin of an axial-flow compressor rotor. It is one of a series of rotors designed with varying blade solidity achieved by changing the blade chord length : rotor 3 with a tip solidity of 1.3, rotor 4 with a tip solidity of 1.1 and rotor 5 with a tip solidity of 1.5. The results showed that the efficiency and pressure ratio were higher for a rotor with a blade tip solidity of 1.5 than for a rotor with a solidity of 1.1. |
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. |
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* Original technical report [(cite:ball1972design>Ball. «Performance of 1380-foot-per-second-tip-speed axial-flow compressor rotor with blade tip solidity of 1.5 » 1972. {{ https://ntrs.nasa.gov/citations/19720007339|pdf}})]: | * Original technical report [(cite:ball1972design>Ball //et al//, «Performance of 1380-foot-per-second-tip-speed axial-flow compressor rotor with blade tip solidity of 1.5 » 1972. {{ https://ntrs.nasa.gov/citations/19720007339|pdf}})]: <code>@TechReport{ball1972design, |
<code>@TechReport{ball1972design, | |
author = {Ball, Calvin L. and Janetzke, David C. and Reid, L.}, | author = {Ball, Calvin L. and Janetzke, David C. and Reid, L.}, |
date = {1972}, | date = {1972}, |
url = {https://ntrs.nasa.gov/citations/19720007339}, | url = {https://ntrs.nasa.gov/citations/19720007339}, |
} | } |
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</code> | </code> |
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* [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|downloadable models]] (Git project) | * [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|downloadable models]] (Git project) |
* {{ :public:modeles:rotor_5:rotor5.pdf | NASA technical report}} (.pdf) | * {{ :public:modeles:rotor_5:rotor5.pdf | NASA technical report}} (.pdf) |
* {{ :public:modeles:rotor_5:rotor5_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_5:rotor5_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> |
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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:ball1972design)]. Corresponding models are computed with the open-source code OpenMCAD[(cite:Kojtych_2022_gene_aubes)]. | The **reference blade** is defined with multiple-circular arc profiles[(cite:Crouse_1969_computer)] given in the original NASA report[(cite:ball1972design)]. Corresponding models are computed with the open-source code OpenMCAD[(cite:Kojtych_2022_gene_aubes)]. |
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===== Geometry ===== | ==== Geometry ==== |
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The geometry of rotor 5 is described in the [[https://ntrs.nasa.gov/citations/19720007339|original NASA report]] by the following tables. The length are in inches and the angles in degrees. | The geometry of rotor 5 is described in the [[https://ntrs.nasa.gov/citations/19720007339|original NASA report]] by the following tables. The length are in inches and the angles in degrees. |
{{ :public:modeles:rotor_5:gene_aubes_nasa_geom_rotor5.png?400 |}} | {{ :public:modeles:rotor_5:gene_aubes_nasa_geom_rotor5.png?400 |}} |
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===== Aerodynamic design ===== | ==== Aerodynamic design ==== |
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^ ^ unit ^ value ^ | ^ ^ unit ^ value ^ |
^ rotative speed | [rad/s] | 1675.51 | | ^ rotative speed | [rad/s] | 1675.51 | |
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===== Material properties ===== | ==== Material properties ==== |
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Rotor 5 is made of a 200-grade maraging steel | Rotor 3 is made of a 200-grade maraging steel, but the exact material properties are not provided in the NASA report. The following properties are considered : |
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^ ^ uni ^ value ^ | ^ ^ unit ^ value ^ |
^ alloy | [-] | 18-Ni-200-maraging | | ^ alloy | [-] | 18-Ni-200-maraging | |
^ Young's modulus | [GPa] | 180 | | ^ Young's modulus | [GPa] | 180 | |
</col> | </col> |
<col md="4"> | <col md="4"> |
{{:public:modeles:rotor_05:5_intra.png?200|}} | {{ :public:modeles:rotor_05:5_intra.png?200 |}} |
<caption>pressure side</caption> | <caption>pressure side</caption> |
</col> | </col> |
<col md="4"> | <col md="4"> |
{{:public:modeles:rotor_05:5_extra.png?200|}} | {{ :public:modeles:rotor_05:5_extra.png?200 |}} |
<caption>suction side</caption> | <caption>suction side</caption> |
</col> | </col> |
Ensuite, une autre série d'essais a été menée avec des solidité en tête de 1,3 pour le rotor 14, 1.5 pour le rotor 8 et 1.7 pour le rotor 12. Ces solidités sont modifiées en faisant varier le nombre d'aubes tout en conservant les mêmes triangles de vitesse et le même trajet d'écoulement. Ces étages ont été conçus de manière à ce que la solidité en tête du rotor et du stator soit la même. | Ensuite, une autre série d'essais a été menée avec des solidité en tête de 1,3 pour le rotor 14, 1.5 pour le rotor 8 et 1.7 pour le rotor 12. Ces solidités sont modifiées en faisant varier le nombre d'aubes tout en conservant les mêmes triangles de vitesse et le même trajet d'écoulement. Ces étages ont été conçus de manière à ce que la solidité en tête du rotor et du stator soit la même. |
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* Rapport technique original [(cite:ball1972design>Ball. «Performance of 1380-foot-per-second-tip-speed axial-flow compressor rotor with blade tip solidity of 1.5 » 1972. {{ https://ntrs.nasa.gov/citations/19720007339|pdf}})]: <code>@TechReport{ball1972design, | * Rapport technique original [(cite:ball1972design>)]: <code>@TechReport{ball1972design, |
author = {Ball, Calvin L. and Janetzke, David C. and Reid, L.}, | author = {Ball, Calvin L. and Janetzke, David C. and Reid, L.}, |
date = {1972}, | date = {1972}, |
* [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|modèles téléchargeables]] (lien vers projet Git) | * [[https://gitlab.lava.polymtl.ca/depots_publics/modeles/catalogue_aubes/-/tree/master/rotor05|modèles téléchargeables]] (lien vers projet Git) |
* {{ :public:modeles:rotor_5:rotor5.pdf | rapport technique original}} de la NASA (.pdf) | * {{ :public:modeles:rotor_5:rotor5.pdf | rapport technique original}} de la NASA (.pdf) |
* {{ :public:modeles:rotor_5:rotor5_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_5:rotor5_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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===== Géométrie ===== | ==== Géométrie ==== |
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La géométrie du rotor 5 est décrite dans le [[https://ntrs.nasa.gov/citations/19720007339|rapport d'origine de la NASA]] par les tableaux suivants. Les grandeurs sont en pouces et en degrés. | La géométrie du rotor 5 est décrite dans le [[https://ntrs.nasa.gov/citations/19720007339|rapport d'origine de la NASA]] par les tableaux suivants. Les grandeurs sont en pouces et en degrés. |
{{ :public:modeles:rotor_5:gene_aubes_nasa_geom_rotor5.png?400 |}} | {{ :public:modeles:rotor_5:gene_aubes_nasa_geom_rotor5.png?400 |}} |
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===== Caractéristiques aérodynamiques ===== | ==== Caractéristiques aérodynamiques ==== |
^ ^ unités ^ valeurs ^ | ^ ^ unités ^ valeurs ^ |
^ taux de compression | [-] | 1,8 | | ^ taux de compression | [-] | 1,8 | |
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===== Propriétés matériau ===== | ==== Propriétés matériau ==== |
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Le matériau original du rotor 5 est défini dans le rapport de la NASA. Un acier maraging de grade 200 est considéré: | Le matériau du rotor 5 est un alliage à base de nickel : un acier maraging de grade 200, mais ses caractéristiques ne sont pas fournies. Les propriétés considérées sont : |
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^ ^ unité ^ valeurs ^ | ^ ^ unité ^ valeurs ^ |
</col> | </col> |
<col md="4"> | <col md="4"> |
{{:public:modeles:rotor_05:5_intra.png?200|}} | {{ :public:modeles:rotor_05:5_intra.png?200 |}} |
<caption>intrados</caption> | <caption>intrados</caption> |
</col> | </col> |
<col md="4"> | <col md="4"> |
{{:public:modeles:rotor_05:5_extra.png?200|}} | {{ :public:modeles:rotor_05:5_extra.png?200 |}} |
<caption>extrados</caption> | <caption>extrados</caption> |
</col> | </col> |