Reading on PDK gives a little idea on what are the TDK.

See TowerJazz for instance:

Process Design Kits (PDK)

TowerJazz PDK’s offer a front-to-back integrated custom design environment that supports all major EDA vendors’ design flows. Our design kits contain the parameters such as layer thickness and stress gradient that have been well defined within the tolerances of our specific manufacturing processes. The kit automatically sets these constraints for the designer allowing only those parameters to be varied during the evaluation of designs and allowing only those designs that are perfectly compatible with the manufacturing process.

On TCAD: https://www.semiwiki.com/forum/content/3710-taking-leap-forward-tcad.html