CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Computational aerodynamic study of a paraglider

Estudiants que han llegit aquest projecte:

Director/a: MELLIBOVSKY ELSTEIN, FERNANDO PABLO

Departament: FIS

Títol: Computational aerodynamic study of a paraglider

Data inici oferta: 04-02-2017     Data finalització oferta: 04-10-2017


Estudis d'assignació del projecte:
    GR ENG SIST AEROESP
Tipus: Individual
 
Lloc de realització: EETAC
 
Segon director/a (UPC): ORTEGA, ENRIQUE
 
Paraules clau:
Computational Fluid Dynamics, Aerodynamics, Paraglider
 
Descripció del contingut i pla d'activitats:
Paragliders consist of manoeuvrable deformable wings that must adopt their optimal shape under the aerodynamic forces they incur in flight. There exists a strong fluid-structure coupling. This project will focus on the aerodynamic study of an optimally deployed paraglider sail in design flight conditions using computational fluid dynamics tools.

The work plan will consist of the following activities

1) Literature review on paraglider geometry and aerodynamic performances.

2) Numerical assessment of a paraglider aerodymanic performances for validation against experimental results.

3) Analysis of pressure distributions and flow fields for the baseline sail.

4) Parametric analysis of geometry modifications for performance optimisation.

5) Off-design performance assessment.

6) Conclusions.
 
Overview (resum en anglès):

The aim of this project is to carry out an aerodynamic performance analysis of a paraglider by using simulation computational programs with low time cost and computational requirements, but still effective approach obtaining reliable results.
To achieve this objective, a 3D analysis of the wing will be done using PARACHUTES, a simulation program based on a flow potential theory approach, complemented with an unsteady low order panel method. To consider viscous phenomenon, boundary layer thickening effects and flow separation, a 2D analysis will be done using XFOIL simulation program.
To perform this study, the CAD 3D model has to be parameterized and the boundary conditions has to be properly configured previously for the acquisition of accurate results. Moreover, to complement it with the 2D analysis, these geometries are obtained from the 3D CAD model and some parameterization has been also done.
First, a study of the pressure coefficient and velocity distribution contours will be done. Then, a 2D comparison of two airfoils that conform the wing will be analyzed. Next, the common aerodynamic parameters will be determined and studied: lift coefficient (CL), drag coefficient (CD), pitching moment coefficient (CM). The equations that define the previous parameters are also determined. Finally, a comparison between the results obtained in this project with CFD simulation results provided by Niviuk Gliders is performed.

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