Turbomachinery refers to machines that transfer energy between a rotor and a fluid, typically involving either gas or liquid. Common examples include turbines, which extract energy from flowing fluids, and compressors, which increase the pressure of gases. These machines are widely used in various industries, including power generation, aviation, and HVAC systems. The design and operation of turbomachinery are crucial for efficiency and performance. Engineers focus on optimizing the shape and materials of the components to enhance energy transfer and minimize losses. Understanding fluid dynamics and thermodynamics is essential for developing effective turbomachinery systems.