Gerald great topic!!
some related remarks:
- For a first guess of the thickness of a turbulator see: http://www.mh-aerotools.de/airfoils/...gTheTurbulator
- The turbulator should be placed a few percent upstream of the transition location.
- The optimal angle of the zigzag turbulator is 60 degrees. It is important that the points heading to the trailing edge are sharp (not rounded).