Conservation Equations for Mass and Momentum for Incompressible Flows -- Boundary-Layer Equations for Incompressible Flows -- Two-Dimensional Incompressible Laminar Flows -- Transition in Two-Dimensional Incompressible Flows -- Two-Dimensional Incompressible Turbulent Flows -- Three-Dimensional Incompressible Laminar and Turbulent Flows -- Transition in Three-Dimensional Incompressible Flows -- Interactive Boundary-Layer Theory -- Conservation Equations for Mass, Momentum and Energy -- Two-Dimensional Compressible Laminar Flows -- Two-Dimensional Compressible Turbulent Flows -- An Interactive Boundary-Layer Method for Three-Dimensional Flows -- Transition in Three-Dimensional Compressible Flows.This second edition of our book extends the modeling and calculation of boundary-layer flows to include compressible flows. The subjects cover laminar, transitional and turbulent boundary layers for two- and three-dimensional incompressible and compressible flows. The viscous-inviscid coupling between the boundary layer and the inviscid flow is also addressed. The book has a large number of homework problems.