SIMPLE
Pressure-Velocity Coupling
Semi-Implicit Method for Pressure-Linked Equations. The foundational algorithm for steady-state incompressible flow.
SIMPLEC
Pressure-Velocity Coupling
SIMPLE-Consistent algorithm with improved velocity correction for enhanced convergence.
PISO
Pressure-Velocity Coupling
Pressure-Implicit with Splitting of Operators. Excellent for transient flows and unsteady simulations.
PIMPLE
Pressure-Velocity Coupling
Hybrid PISO-SIMPLE algorithm combining benefits of both approaches for robust transient solutions.
Coupled
Pressure-Velocity Coupling
Simultaneous solution of momentum and continuity equations for optimal convergence.
Central Difference
Spatial Discretization
Second-order accurate scheme with excellent accuracy for smooth flows but potential stability issues.
First-Order Upwind
Spatial Discretization
Stable but diffusive scheme suitable for initial convergence and robust solutions.
Second-Order Upwind
Spatial Discretization
Improved accuracy over first-order with maintained stability for most engineering applications.
QUICK
Spatial Discretization
Quadratic Upstream Interpolation for Convective Kinematics. Third-order accuracy with good stability.
MUSCL
Spatial Discretization
Monotonic Upstream-centered Scheme for Conservation Laws. High-resolution with shock-capturing.
TVD
Spatial Discretization
Total Variation Diminishing schemes ensuring monotonicity and avoiding spurious oscillations.
WENO
Spatial Discretization
Weighted Essentially Non-Oscillatory scheme providing high-order accuracy with shock-capturing.