  The World Space Observatory - Ultraviolet (WSO-UV) space telescope is
equipped with high dispersion (55,000) spectrographs working in the 1150-3100
{\AA} spectral range. To evaluate the impact of the design on the scientific
objectives of the mission, a simulation software tool has been developed. This
simulator builds on the development made for the PLATO space mission, and it is
designed to generate synthetic time-series of images by including models of all
important noise sources. In this article, we describe its design and
performance. Moreover, its application to the detectability of important
spectral features for star formation and exoplanetary research is addressed.
