SIMPLE algorithm

In computational fluid dynamics, the SIMPLE algorithm is a widely used numerical procedure for solving the Navier-Stokes equations. SIMPLE is an acronym for Semi-Implicit Method for Pressure Linked Equations. The algorithm was developed by Brian Spalding and his student Suhas Patankar at Imperial College London in the early 1970s, and since then many researchers have used it to solve different kinds of fluid flow and heat transfer problems. A modified variant, the SIMPLER algorithm or SIMPLE Revised, was introduced by Patankar in 1979. Many popular books on computational fluid dynamics discuss the algorithm in detail.