rhoCentralRK4Foam is derived from rhoCentralFoam by replacing its first-order time advancement scheme with a third-order, four stage Runge-Kutta scheme. The main purpose of developing this solver is to improve the scaling performance of rhoCentralFoam, especially in large-scale simulations.
This is a fork from https://github.com/SiboLi666/rhoCentralRK4Foam
See https://doi.org/10.1155/2020/9083620 for the associated publication from the original authors Sibo Li, Roberto Paoli and Michael D’Mello