University of Twente Student Theses
Integral boundary layer parameters : aerodynamics division of Suzlon blade technology AERODYNAMICS DIVISION OF SUZLON BLADE TECHNOLOGY
Barreto de Matos, J.A. (2018) Integral boundary layer parameters : aerodynamics division of Suzlon blade technology AERODYNAMICS DIVISION OF SUZLON BLADE TECHNOLOGY.
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| Abstract: | The integral boundary layer parameters and the shape of the velocity profile at the trailing edge are determinant parameters in the characterization of the aero acoustical performance of an airfoil. Despite the development in numerical solverssome unclear definitions still lead to incoherencies between different numerical and experimental results. Namely, defining the chord percentage position at which the velocity profile should be analyzed and how to determine the boundary layer thickness are two uncertainties. Chord percentage is usually in the close vicinity of one, either before or after. The problem of determining the boundary layer thickness at the trailing edge arises from the fact that the flow around the airfoil is not a non-pressure gradient flow field. Thus, the traditional definition considering the point at which the velocity is ninety nine percent of the freestream velocity will produce inconsistent results. In this assignment post process tools are developed to deal with such calculations for subsonic flows around airfoils considering these particularities. Using an in-house standardized numerical simulation procedure several case studies with different airfoils and conditions are computed. Some cases are used to determine the competence of the developed tools and others to evaluate the correctness of the numerically generated results by benchmarking them against results from other CFD simulations, experimental setups, and Xfoil. |
| Item Type: | Internship Report (Master) |
| Faculty: | ET: Engineering Technology |
| Programme: | Mechanical Engineering MSc (60439) |
| Keywords: | Boundary Layer Thickness, Displacement Thickness, Momentum Thickness, Airfoils, Flow Field |
| Link to this item: | https://purl.utwente.nl/essays/85115 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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