A directory containing the computational projects for the 2018 Summer School can be downloaded here.
A directory containing the code for Project 3 from Ali Mashayek is here.
Descriptions of the projects using SAMBUCA are here and here.
Diablo is an open-source CFD solver that I originally developed with Tom Bewley and others at UCSD. It solves the incompressible, Boussinesq Navier-Stokes equations in several simple geometries. The full version, written in Fortran, can be found here.