With the increasing interest for renewable energy resources in the last couple of decades, the possible benefits of flow control is brought under more and more attention. Boundary layer suction (or blowing) is one type of control that has proven its applicability in various fields. Being able to predict these effects on the boundary layer and airfoil properties can save both money and time in early design stages. At the moment, this prediction is still unsatisfactory and not well validated. This is especially true for turbulent boundary layers with suction. For this reason, the main objective is to provide new ways to model boundary layer suction on airfoils by using different computational techniques. Next to this, the results should be compared with other design tools as well as with analytical and experimental data for validation.