Fluids are substances that flow and have the ability to take the shape of their container. The study of fluids is a branch of physics and engineering that focuses on the behavior and properties of liquids and gases. This area of research covers a wide range of topics, including fluid dynamics, fluid mechanics, and rheology. Fluid dynamics deals with the motion of fluids and the forces acting on them. This includes the study of how fluids flow around objects, the behavior of waves and turbulence in fluids, and the forces that cause fluids to move. Fluid mechanics is concerned with the physical properties of fluids, such as viscosity, density, and pressure. Rheology is the study of how fluids deform and flow in response to stress. Research in the field of fluids has important applications in a variety of industries, including aerospace, automotive, and energy. Understanding how fluids behave can help engineers design more efficient aircraft, improve the performance of vehicles, and optimize the production of energy from sources like oil and gas.