This is a Master Thesis Work done at FOI. The aim was to develop and investigate the abilities and flow over a compression surface, a so called bump, which was later integrated with an intake. This design is called a Diverterless Supersonic Inlet (DSI) and asuccessful result lead to less weight and cost savings as well as low signature abilities compared to a conventional intake with a diverter. The geometries were created with the help of MATLAB® and ProEngineer®. The surface meshesand the initial volume meshes were generated in the commercial program ANSYS ICEMCFDT and the final volume meshes and the boundary layer meshes were added in the FOI developed program TRITET. To solve the flow equations, the FOI developed program Edge 4.1 was used. Finally the program ENSIGHT was used to visualize the results. Abilities such as surface flow, deceleration of Mach number, pressure recovery, boundary layer diversion and mass flow were chosen to be compared.