In the past, some users have automated Revit to NWC export to happen overnight using customized journal files. Kyle Morin has now created an addin that monitors model changes and automatically keeps your NWC up to date, essentially in “real time”.
You can download it for Revit 2014 here, and view / contribute on the open source page here.
Check out his post at:
Revit to Navisworks: Auto NWC View Exporter – kylemorin.co Blog
