Gas Dynamics is the study of how gases behave when they are in motion. It involves understanding the principles of fluid mechanics and thermodynamics to analyze the flow of gases, especially at high speeds. This field is crucial in various applications, including aerospace engineering, where it helps design aircraft and rockets. In Gas Dynamics, key concepts include pressure, temperature, and density changes as gases move. The behavior of gases can be described using equations like the Navier-Stokes equations and the Bernoulli's principle. These principles help predict how gases will react under different conditions, such as in combustion engines or atmospheric phenomena.