The document discusses a computational study of film cooling in hypersonic laminar flows using ANSYS-CFX software. Film cooling involves injecting a secondary fluid through discrete slots to thermally insulate a solid surface from a high-temperature gas stream. The study examines film cooling effectiveness at varying coolant injection rates and slot heights for different hypersonic flow conditions. Results show that film cooling can be an effective way to protect surfaces from high heating in hypersonic laminar flow, with effectiveness increasing at higher coolant injection rates before dropping off further downstream due to mixing. Film cooling provides full protection of the surface for some distance downstream of the slot.