The design and safe operation of high-speed vehicles depend on a clear understanding of turbulent compressible flows - accurate estimations of aerodynamic lift, drag, propulsion, and high-speed maneuverability would be impossible without it. While our knowledge of turbulent shear layers remains incomplete, significant advances have been realized, thanks to innovative experimentation and numerical modeling. This book is the first comprehensive introduction to the behavior of turbulent boundary layers at supersonic speeds, providing an expert summary of what is now understood and pointing the way toward potentially fruitful avenues of research. Using the most recent data, Turbulent Shear Layers in Supersonic Flow describes the physical mechanisms of turbulent supersonic flows, emphasizing the similarities and differences between compressible and incompressible flows. The book begins with a basic overview of the field, essential equations, and core concepts of compressible turbulence.