Steam Assisted Gravity Drainage (SAGD) has been applied as a reliable oil recovery technology in the oil sand industry. In order to increase the productivity of the SAGD process, Outflow Control Devices (OCD) are used to control the injection of steam into the formation. Our work aims at the modelling of OCD with Computational Fluid Dynamics (CFD). In this paper, CFD simulation of OCD has been done based on a simplified model. The mechanism how OCD controls the flow is studied through a series of test simulations. Different models have been compared to study the effect of the setup details on the OCD flow. In the future, more accurate models will be established evolving from the results obtained currently and further investigation to be done into the problem.