The World Space Observatory - Ultraviolet (WSO-UV) space telescope is equipped with high dispersion (55,000) spectrographs working the in 115-310 nm spectral range, similar to the preliminary design of the POLLUX spectrograph for LUVOIR. A simulation software tool has been developed to evaluate the impact of the WSO-UV spectrograph design on the scientific objectives of the mission. This simulator grows on the development made for the PLATO space mission, and it generates synthetic time-series of images by including models of all important noise sources. The architectural design of this simulator aimed at an easy adaption to other missions, and this could be highly beneficial for the POLLUX consortium.