Details
| Original language | English |
|---|---|
| Article number | 012032 |
| Journal | Journal of Physics: Conference Series |
| Volume | 2526 |
| Issue number | 1 |
| Publication status | Published - 2023 |
| Event | 12th International Conference on Innovation in Aviation and Space for Opening New Horizons, EASN 2022 - Barcelona, Spain Duration: 18 Oct 2022 → 21 Oct 2022 |
Abstract
In this paper, the effect of a 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan is investigated numerically. First, an initial sensitivity analysis for the geometrical design features sweep and lean as well as an adaption of the thickness position in the fan hub region is conducted. Positive sweep is found to benefit the total pressure ratio, while positive lean improves the polytropic efficiency of the fan stage. Moving the maximum thickness position upwards leads to decreased flow turning and total pressure ratio. The mode shape and by that the twist-to-plunge ratio of the first mode is significantly influenced by the modifications. Thus, changing the aerodynamic damping of the blade and influencing the flutter behavior of the fan. Additionally, the fan displacements under aerodynamic and rotational loads are affected. For the fan presented a positive lean causes the blade to bend towards the pressure side when subjected to inertial forces, countering deformation from aerodynamic loads. Thickness adaption moves the shear center of the cross sections to the back. These results are used to optimize the fan blade behavior to achieve the project's objectives. A final design, which satisfies the aerodynamic, aeroelastic and structrual needs of the CA3ViAR fan stage, is presented.
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In: Journal of Physics: Conference Series, Vol. 2526, No. 1, 012032, 2023.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Effect of 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan
AU - Eggers, Torben
AU - Friedrichs, Jens
AU - Goessling, Jan
AU - Seume, Joerg R.
AU - Flüh, Jan
AU - Lindemann, Jens
AU - Paletta, Nicola
PY - 2023
Y1 - 2023
N2 - In this paper, the effect of a 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan is investigated numerically. First, an initial sensitivity analysis for the geometrical design features sweep and lean as well as an adaption of the thickness position in the fan hub region is conducted. Positive sweep is found to benefit the total pressure ratio, while positive lean improves the polytropic efficiency of the fan stage. Moving the maximum thickness position upwards leads to decreased flow turning and total pressure ratio. The mode shape and by that the twist-to-plunge ratio of the first mode is significantly influenced by the modifications. Thus, changing the aerodynamic damping of the blade and influencing the flutter behavior of the fan. Additionally, the fan displacements under aerodynamic and rotational loads are affected. For the fan presented a positive lean causes the blade to bend towards the pressure side when subjected to inertial forces, countering deformation from aerodynamic loads. Thickness adaption moves the shear center of the cross sections to the back. These results are used to optimize the fan blade behavior to achieve the project's objectives. A final design, which satisfies the aerodynamic, aeroelastic and structrual needs of the CA3ViAR fan stage, is presented.
AB - In this paper, the effect of a 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan is investigated numerically. First, an initial sensitivity analysis for the geometrical design features sweep and lean as well as an adaption of the thickness position in the fan hub region is conducted. Positive sweep is found to benefit the total pressure ratio, while positive lean improves the polytropic efficiency of the fan stage. Moving the maximum thickness position upwards leads to decreased flow turning and total pressure ratio. The mode shape and by that the twist-to-plunge ratio of the first mode is significantly influenced by the modifications. Thus, changing the aerodynamic damping of the blade and influencing the flutter behavior of the fan. Additionally, the fan displacements under aerodynamic and rotational loads are affected. For the fan presented a positive lean causes the blade to bend towards the pressure side when subjected to inertial forces, countering deformation from aerodynamic loads. Thickness adaption moves the shear center of the cross sections to the back. These results are used to optimize the fan blade behavior to achieve the project's objectives. A final design, which satisfies the aerodynamic, aeroelastic and structrual needs of the CA3ViAR fan stage, is presented.
UR - http://www.scopus.com/inward/record.url?scp=85169672366&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2526/1/012032
DO - 10.1088/1742-6596/2526/1/012032
M3 - Conference article
AN - SCOPUS:85169672366
VL - 2526
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012032
T2 - 12th International Conference on Innovation in Aviation and Space for Opening New Horizons, EASN 2022
Y2 - 18 October 2022 through 21 October 2022
ER -