👉 A fluid, often used in the context of chemical or mechanical systems, is a substance that can flow easily under certain conditions. In fluid mechanics, it refers to liquids or gases that move smoothly and continuously, typically without breaking into droplets or forming distinct layers. The fluid's behavior is governed by principles like viscosity, which affects how it resists flow, and pressure, which influences its movement through pipes or channels. In fluid dynamics, understanding the properties of fluids—such as density, temperature, and velocity—is crucial for modeling and predicting their behavior in various applications, from engineering to meteorology.
