Multiphysics and multiscale numerical tool optimization for wall temperature prediction of gas turbine combustor liners

Multiphysics and scale-resolved simulations based on loosely-coupled approaches have emerged as extremely effective numerical tools as they provide enormous computational time savings as compared with standard CHT simulations. The fundamental advantage of such approaches is based on the fact that each heat transfer mechanism is solved with the most suitable numerical setup, which leads to the use of spatial and temporal resolutions following the characteristic time scales of each phenomenon to be solved. For industrial applications, where the availability of numerical resources is limited and, at the same time, the timelines with which to obtain results are rather tight having robust and easy-to-use loosely coupled solutions available for the design of combustion chamber cooling systems would be extremely valuable. In this context, the objective of this work is to perform an optimization for the multiphysics and multiscale tool U-THERM3D developed within the University of Florence, to revise the coupling strategy workflow to make the numerical tool faster and easier to use.