The process to perform simulation depends on the software release being used.
In 2013.2, the NCSim and VCS tools are not integrated into the Vivado toolset. However, a TCL script exists to create the simulation file list for the design and IP. This script can only be used with the 2013.2 tools, and more detail about the process is given in the linked articles of this AR.
In 2013.3 the NCSim and VCS tools will be integrated into the Vivado Suite and as such will not require the manual or scripted flow of prior releases.