Pressure-Based and Density-Based Solvers in CFD

This video presents the pressure-based and density-based solvers in CFD. Both the pressure-based and density-based solvers are used to solve the mass and momentum conservation equations, which describe the fluid flows. The density-based solvers are mainly used for compressible flows, which are encountered at high speeds. These solvers are also referred to as the coupled solvers. However, the pressure-based solvers are historically developed for low-speed incompressible flows, where the density is assumed to be a constant value. The pressure-based solvers are also referred to as the segregated solvers. Video Outline: 0:00 - Pressure-Based and Density-Based Solvers in CFD 1:43 - Pressure-based solvers 6:18 - SIMPLE algorithm 10:56 - Weakness of the SIMPLE algorithm 12:01 - SIMPLER Algorithm 14:32 - SIMPLE-C Algorithm 15:33 - PISO Algorithm 20:20 - Density-based solvers 25:13 - Segregated Solver vs. Coupled Solver