UC Davis

This work details the development effort of the in-house, high-fidelity, fully coupled, fluid-thermal-structure interaction finite volume code, MBFLO3. A three-dimensional finite volume based structural solver capable of simulating arbitrarily large strains has been integrated into the existing fluid-thermal interaction code to develop a monolithic, fully coupled, fluid-thermal-structure interaction technique. The structural solver presented is verified through two test cases using theory, two-dimensional simulations reported in literature, and commercially available software. The fully coupled, monolithic, fluid-structure interaction method is capable of simulating large structural displacements while maintaining mesh quality through the use of a Poisson smoothing technique. The FSI method is verified using cylinder-flag configuration common in literature. Finally, the MBFLO3 solution procedure has been extended to handle overlaid grids and the conjugate heat transfer modeling of multiple solids using spatial second-order accurate treatments. A three-dimensional, steady, conjugate simulation of a film cooled vane with thermal barrier coating is compared with experimental data from a vane-alone experiment at the Air Force Turbine Research Facility. The numerical techniques used in the conjugate solution procedure are described and the procedure is validated against the vane-alone experimental data.