CFD simulation of load rejection sequence for the Francis-99 model turbine. The change in guide vane angle is visualized using both the mesh and the variation in guide vane opening angle. A lambda2 iso-surface visualizes vortices. A force acting on the runner as well as the pressure in a point in the draft tube are shown.
Salehi, S., & Nilsson, H. (2021). OpenFOAM for Francis Turbine Transients. OpenFOAM® Journal, 1, 47–61. https://doi.org/10.51560/ofj.v1.26