Adding a Pressure-Based Solver

The proposed project involves the addition of a pressure-based solver to the SU2 code base. The pressure-based solver is an important algorithm in the Computational Fluid Dynamics (CFD) landscape due to its great performance for low Mach and incompressible flow applications. As of right now, SU2's primary solvers are density-based algorithms which excel in compressible flow simulations. Density-based algorithms can be adapted for low Mach and incompressible flows using for example artificial compressibility or preconditioning. However, these approaches effectively modify a formulation that is not inherently aligned with incompressible flow physics, and therefore remain less efficient than pressure-based algorithms for these applications. The goal of the project is to investigate the current attempts on the addition of pressure-based algorithms to SU2, and to identify what is needed to subsequently work on integrating the pressure-based algorithm into the main SU2 branch. The final result is expected to be a successful merge of a pressure-based algorithm into the main SU2 branch.