Delta Wing Project

Project Name Student Industrial Partners Academic/Research Partners Duration
Flow Over Delta Wing José Antonio Galván N/A Universidad del País Vasco 2007-2008

The aim of this Final Year Project was to develop a carry out a comparison of the aerodynamic lift and drag calculated by simulation and measured by experiment for a Delta Wing at an angle of attack to a low subsonic free stream. The simulations were carried out using the Fluent software package while the experiments were carried out in the ULg wind tunnel. The wind tunnel model was a rigid wooden Delta wing.

A rigid Delta wing model in the ULg wind tunnel

The ultimate aim of the project was to determine which of the turbulence models available in Fluent give the best correspondance with the experimental results.

Grid used for the Fluent simulations. Boundary layer in white

The conclusion was that all turbulence models tested give good results at angles of attack up to 20 degrees. At higher angles of attack none of the models were in close agreement with the experimental results. The figure below shows a sample result, where the experimental lift vs drag coefficient curve is plotted along with the simulation results obtained from various turbulence models. It can be seen that at angles higher than 20 degrees only the K-E standard turbulence model gives lift and drag estimates close to the experimental ones but the model parameters were highly calibrated. Conversely, at angles of attack up to 20 degrees the agreement between simulation and experiment is very good.

A sample comparison between experimental and numerical results

References