U-bend internal cooling channel¶
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 a heat transfer optimization case for a U-bend internal cooling channel. The summary of the case is as follows:
Case: Heat transfer optimization for U bend cooling channelsGeometry: von Karman U bend ductObjective function: Nusselt numberDesign variables: 114 FFD points moving in the x, y, and z directionsConstraints: Symmetry constraint (total number: 38)Mach number: 0.02Reynolds number: 4.2e4Mesh cells: 4.8KAdjoint solver: simpleTDAFoam
The optimization progress will then be written in the log.opt file.
For this case, the optimization converges in 6 steps, see the following figure. The baseline design has Nu=25.14 and the optimized design has Nu=26.89.
We use ICEM to generate the FFD points.
We use simpleTDAFoam, which is based on simpleDAFoam with an extra scalar equation for temperature.