👉 A compact fluid, also known as a compressible fluid, is a substance whose volume can change significantly with variations in pressure or temperature. Unlike incompressible fluids, such as water, which maintain a relatively constant volume under pressure changes, compact fluids like gases and certain liquids can expand or contract substantially. This property is due to the discrete nature of their constituent particles, which can move freely and adjust their positions in response to external forces. The compressibility of fluids is crucial in various applications, including engines, pneumatics, and aerospace engineering, where understanding how fluids behave under different conditions is essential for design and efficiency.
