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Showing 1 to 15 of 15 for “"XFOIL"”.
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Minimum pressure envelope cavitation analysis using two-dimensional panel method
… minimum pressure envelopes was developed using XFOIL. This thesis presents MATLAB® executables that interface with a modified version of XFOIL for determining the minimum pressure of a foil operating in an inviscid fluid. The code creates minimum pressure envelopes, similar to those published by …
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Low Reynolds Number Laminar Separation Bubble Control Using a Backward Facing Step
… agreement with the results obtained from the XFOIL CFD code. It was concluded that the step cutout modification improves the airfoil’s lift-to-drag ratio at low angles of attack by tripping the boundary layer and decreasing the size of the laminar separation bubble. For higher angles of …
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Low-Tip-Speed High-Torque Proprotor Noise Approximation for Design Cycle Analysis
… along the blade surface using Drela's Xfoil (2001). The noise approximation, performed using Brentner's PSU-WOPWOPv3 (2017), was validated with known data obtained from previous published experimental results. These were within acceptable range of error, demonstrating the feasibility of …
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Design, Simulation, and Wind Tunnel Verication of a Morphing Airfoil
… in low Reynolds number flow are explored with XFOIL. Predictions are made on static aeroelastic effects. The thin, cambered Generic Micro Aerial Vehicle (GenMAV) airfoil is fabricated with a bimorph actuator. Experimental data are taken with and without aerodynamic loading to validate the …
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Experimental wind tunnel study of airfoils with large flap deflections at low Reynolds numbers
… performance was predicted computationally using XFOIL during the inverse design of the W1011 and W1015 airfoils. In order to effectively analyze and compare the experimental results, lift and moment increment plots were created. Drag data with large flap deflections was collected to determine the …
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Integral Boundary Layer Methods in Python
… analytic solutions, experimental data and XFOIL results provide a wide varity of verification and validation cases with which to compare. The implementation of Thwaites' method in this thesis avoids simplifications made in other implementations of this method, which results in more robust …
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Design and Analysis of Low Reynolds Number Marine Propellers with Computational Fluid Dynamics (CFD) Transition Modeling
… line method coupled with the panel method code XFOIL. Initial geometries generated using the lifting-line method are then optimized in RANS CFD using the 2 equation γ-Reθ transition model and an adjoint method to warp the propeller shape to improve the efficiency. Two design studies are …
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Numerical Study in Wind Energy Extraction from Controlled Limit-Cycle Oscillations in Modified Glauert Airfoil
… method solver with boundary layer prediction XFOIL is used. Both numerical tools compare well to steady-state experimental results.</p> <p>The MG airfoil geometry exhibits LCO below the velocities predicted by inviscid unsteady thin airfoil theory (UTAT) due to separation near the rear of the …
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Noise And Propulsive Efficiency Interactions For Rotors And Propellers At Constant Thrust
… by employing several functions to integrate XFOIL and Blade Element Momentum Theory for the rotor performance calculations and WOPWOP for thickness and loading noise analysis. Broadband noise is not included in the analysis herein. In addition, this thesis will present the design and build of …
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Aerodynamic and Acoustic Modeling for eVTOL Rotor Noise Prediction
… obtained from the viscous-inviscid solver, XFOIL, were replaced with higher-fidelity 2D-RANS results from OpenFOAM to better capture low-Reynolds-number flow physics, including laminar-turbulent transition and laminar separation bubble behavior.</p> <p>Predicted acoustic spectra were …
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A new direct viscous-inviscid interaction method for aerodynamics analysis
… code with the available experimental result and XFoil software for the case of flow past through airfoil NACA 0012 and RAE 2822 at various flow condition confirm that the present computer code had been developed successfully. Finally, present study found that the DVII method is only compatible …
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Shape optimization of cambered airfoils using a genetic algorithm and a multipoint inverse method
… and a multipoint inverse method called PROFOIL. XFOIL was used to evaluate the aerodynamic performance of each airfoil. Data processing techniques and a custom penalty function were developed in order to overcome challenges in integrating these tools. The viability of this approach was assessed …
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Transition Detection for Low Speed Wind Tunnel Testing Using Infrared Thermography
… tests as well as the numerical predictions of XFOIL. The transition results from all four methods showed excellent agreement with each other for the two models, for at least two Reynolds numbers and for several angles of attack on both suction and pressure side of the model. The agreement of …
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A Low Order Aerodynamic Model of Embedded Total Temperature Probes
… separately using the widely available program Xfoil. Validation of the combined model could only be accomplished via experimental testing. Several sensors, based on the predictions of the model, were 3D printed for use in experimental testing. Three key geometric parameters were identified and …
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Airfoil design framework for optimized boundary-layer integral parameters
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms