NOTE: Before running this case, please read the instructions in NACA0012 airfoil incompressible to get an overall idea of the DAFoam optimization setup.
This is an aerodynamic shape optimization case for the NREL6 wind turbine. The summary of the case is as follows:
Case: Wind turbine aerodynamic optimizationGeometry: NREL6Objective function: TorqueDesign variables: 100 FFD points moving in the x and y directionsConstraints: NoneInlet velocity: 7 m/sRotation speed: 7.5 rad/sMesh cells: 60KAdjoint solver: turboDAFoam
The optimization progress will then be written in the log.opt file. NOTE, we recommend running this case on an HPC system using at least 8 CPU cores.
For this case, the optimization was run for 5 steps, see the following figure. The baseline design has a torque of 631.1 N m, and the optimized design has a torque of 1352.9 N m.
The mesh and FFD points are as follows. We use snappyHexMesh to generate the meshes.