The present study is carried out for investigation of capture performance of the hood system with swirl fan. In order to analyze the vortex flow around swirl fan, one swirl fan with swirl guide is considered. The standard k-e model is used to consider the turbulent effect around hood system. In order to reduce the computational time and memory storage, cyclic boundary condition is applied. For the numerical simulation, MRF(Multi-Reference Frame) method is used to consider rotating operation of the swirl fan.