Menkes, Joshua Science and Technology Divisions, Institute for Defense Analysis, Arlington, Virginia.
Cambel, Ali B. School of Engineering and Applied Science, George Washington University, Washington, DC.
Talbot, Lawrence Department of Mechanical Engineering, University of California, Berkeley, California.
Last reviewed:January 2020
- Scope of subject
- Fundamental relations
- Continuity equation
- Momentum equation
- Energy equation
- Speed of sound
- Wave phenomena
- Shock waves
- Detonation and deflagration waves
- Mach number functions
- Internal one-dimensional flow
- External flow
- Rarefied gas dynamics
- Related Primary Literature
- Additional Reading
The study of gases in motion. In general, matter exists in any of three states: solid, liquid, or gas. Liquids are incompressible under normal conditions; water is a typical example. In contrast, gases are compressible fluids; that is, their density varies depending on the pressure and temperature. The air surrounding a high-speed aircraft is an example. See also: Gas; Liquid
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