Simultaneous wing shape and actuator parameter optimization using the adjoint method

Koyuncuoglu, Heyecan; He, Ping

doi:10.1016/j.ast.2022.107876

Cited by 15 publications

(7 citation statements)

References 34 publications

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“…Many approaches of varying complexity and fidelity have been used to model propellerwing interaction [3,6,[9][10][11]13,[22][23][24][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41]. One approach is to combine a vortex-lattice method (VLM) model for the wing with a propeller model that provides induced velocities, such as a blade-element momentum model [9,10,13,24,29,30,36].…”

Section: Introductionmentioning

confidence: 99%

RANS-Based Aerodynamic Shape Optimization of a Wing with a Propeller in Front of the Wingtip

Chauhan,

Martins

2024

Aerospace

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Accounting for propeller–wing interaction allows for the design of more efficient propeller aircraft through strategic propulsion integration. In this paper, the cruise drag of a wing with a propeller located in front of the wingtip is minimized using twist and airfoil-shape design variables. Reynolds-averaged Navier–Stokes computational fluid dynamics with an actuator-disk approach is used for the flow simulations, and a gradient-based algorithm is used for the optimization. Changing the rotation direction of the propeller and optimizing the twist and airfoil shapes of the wing are found to impact the aerodynamic performance significantly, as expected. However, optimizing the wing while accounting for the propeller slipstream during optimization provides little benefit over optimizing it without accounting for the propeller slipstream—a difference of less than one drag count.

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Section: Introductionmentioning

confidence: 99%

RANS-Based Aerodynamic Shape Optimization of a Wing with a Propeller in Front of the Wingtip

Chauhan,

Martins

2024

Aerospace

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“…Thus, improving aerodynamic efficiency is a significant factor in the adoption of eVTOLs. Recently, optimization has been performed using different methods (such as gradient-free and gradient-based methods) in order to increase the efficiency of eVTOL aircraft [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Batay et al [16] studied the adjoint-based high-fidelity aerodynamic design optimization of a wind turbine by implementing the DAFoam tools. Koyuncuoglu and He [17] simultaneously optimize the wing shape and actuator parameters using high-fidelity computational fluid dynamics with adjoint optimization approach. They stated that their study can be used as the starting point for more detailed high-fidelity coupled wing-propeller aerodynamic optimizations.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic optimization of eVTOL rotor profiles

Yeganehdoust,

Karbasian,

Vermeire

2023

Progress in Canadian Mechanical Engineering. Volume 6

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Electric Vertical Take-Off and Landing (eVTOL) aircraft are currently being developed to fill a gap in the air transportation sector and, simultaneously, provide zero-emissions alternatives to current generation carbon-intensive short-haul aircraft. However, unlike conventional fixed-wing or rotary aircraft, eVTOL rotors operate in both hover and forward flight configurations. This significantly increases the range of operating conditions experienced by the rotor, introducing multiple aerodynamic design challenges. Additionally, the efficiency of these rotors is particularly important, since it has a direct impact on power draw and aircraft range. In this presentation, a classical airfoil, the ClarkY, is used as a baseline configuration for an eVTOL rotor section. A gradient-based optimization framework using an adjoint solver in Discrete Adjoint with OpenFOAM (DAFoam) with the Reynolds Averaged Navier-Stokes (RANS) approach is then used. In this study, a control point-based free form deformation (FFD) method is used in the framework in order to change the aerodynamic shape. The objective function for this optimization is the lift-to-drag ratio, with additional target lift and geometric constraints. The baseline design is first validated against experimental data, and then the optimization is completed for several target lift coefficient values. Results demonstrate that the lift-to-drag ratio can be increased significantly while maintaining the desired target lift coefficient. Preliminary results for complete rotor optimization using RANS will then be presented, followed by preliminary airfoil optimization using Large Eddy Simulation (LES).

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“…To serve as the reference for the aerostructural analysis, we have chosen a UAV propeller from our previous studies [84,85]. Figure 4-3 illustrates the CFD mesh for the propeller blade.…”

Section: Model Setup and Validationmentioning

confidence: 99%

“…The curvature is constrained to change within 50% of its baseline design value. The curvature at point i is computed using the following equation [85]: where  is the step size and is equal to the length of the reference line divided by the number of points. The aerodynamic optimization results are summarized in Table 4-2.…”

Section: Aerodynamic Optimizationmentioning

confidence: 99%

High-fidelity aerodynamic and aerostructural optimization of UAV propellers

Toman

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Simultaneous wing shape and actuator parameter optimization using the adjoint method

Cited by 15 publications

References 34 publications

RANS-Based Aerodynamic Shape Optimization of a Wing with a Propeller in Front of the Wingtip

RANS-Based Aerodynamic Shape Optimization of a Wing with a Propeller in Front of the Wingtip

Aerodynamic optimization of eVTOL rotor profiles

High-fidelity aerodynamic and aerostructural optimization of UAV propellers

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