The first part of the talk explores whether LES can be fast enough to be used in real-time, by comparing the solution divergence of fine and course-grid simulations over time. In the second part of the talk, we investigate to what extent three-dimensional turbulent flow fields in LES can be reconstructed from sparse measurements obtained from a scanning lidar. This would constitute the state-estimation step in an LES-based optimal control algorithm. To conclude, the next steps and challenges for LES-based optimal control of wind farms are briefly discussed.
