Simulating stellar flybys: FU Orionis, the solar system and RW Aurigae

This thesis studies simulations of stellar flybys. It explores the effects of close encounters between stars on a discs size, orientation and composition, the latter due to thermal processes. Three different systems are looked at: FU Orionis, our solar system and RW Aurigae. We find that a close disc-penetrating stellar encounter can explain sudden bursts in brightness or the formation of melted dust on meteorites.