In dealing with inviscid, hypersonic flow in Part 1, we are simply examining the question: what happens to the fluid dynamics of an inviscid flow when the Mach number is made very large? We will see ...

Equilibrium: Any condition in which all acting influences are cancelled by others resulting in a stable, balanced, or unchanging system. Finally, after four chapters of basic physics and chemistry, we ...

In an imaginary fluid that has no friction (an inviscid fluid), there would be no drag, the entropy does not change, and the flow would be reversible. For example, a cylinder in the flow of an ...

Formally, both types of drag are due to viscosity (if the body was moving through an an inviscid fluid there would be no drag at all), but the distinction is useful because the two types of drag are ...