Suhas Patankar: The Father of Modern CFD [SIMPLE 1972]

Every time you click Run on a steady-state CFD simulation, you owe a debt to one man. Suhas Patankar. In 1972, Patankar and Brian Spalding at Imperial College London published the SIMPLE algorithm - Semi-Implicit Method for Pressure-Linked Equations. Today every commercial CFD code (Fluent, STAR-CCM+, CFX, OpenFOAM) runs a descendant of that 1972 procedure. In 1980 he published Numerical Heat Transfer and Fluid Flow, the textbook that taught two generations of engineers the finite volume method. This beginner-friendly biography walks through Patankar's journey from Pune (1941) to Imperial College (1967) to the University of Minnesota (1975-2000), the SIMPLE algorithm and how it actually works in 5 steps, his textbook and the codes its readers built, the family tree of pressure-velocity coupling (SIMPLE, SIMPLER, SIMPLEC, PISO, PIMPLE), his major awards including the 2008 Max Jakob Memorial Award, and why every CFD engineer alive today is standing on his foundation. Timestamps: 0:00 The man behind every CFD job 0:39 Pune to Imperial College (1941-1967) 1:25 1972 - The SIMPLE paper 2:28 How SIMPLE actually works (5 steps) 3:32 1980 - Numerical Heat Transfer and Fluid Flow 4:27 The SIMPLE family tree (SIMPLER, SIMPLEC, PISO, PIMPLE) 5:15 Career and recognition 6:00 Why he matters today 6:53 Three misconceptions 7:30 If you want to read him 8:08 Wrap-up: 1941 to 2026 Key References: Patankar & Spalding (1972), "A Calculation Procedure for Heat, Mass and Momentum Transfer in Three-Dimensional Parabolic Flows," Int. J. Heat Mass Transfer 15, 1787-1806 Patankar (1980), Numerical Heat Transfer and Fluid Flow, Hemisphere/McGraw-Hill (now Routledge) Issa (1986), "Solution of the Implicitly Discretised Fluid Flow Equations by Operator-Splitting," J. Comput. Phys. 62, 40-65 (PISO) Van Doormaal & Raithby (1984), "Enhancements of the SIMPLE method for predicting incompressible fluid flows," Numer. Heat Transfer 7, 147-163 (SIMPLEC) Versteeg & Malalasekera, An Introduction to Computational Fluid Dynamics: The Finite Volume Method (2nd ed., Pearson 2007) NAFEMS Benchmark, "Icons of CFD: Professor Suhas Patankar" (Oct 2011) #CFD #SIMPLE #ComputationalFluidDynamics --- Disclaimer: This video is for educational and informational purposes only and does not constitute professional engineering advice. Always consult a qualified professional for project-specific requirements. Codes and standards vary by jurisdiction.