Nozzle design refers to the engineering process of creating a device that directs the flow of fluids, such as gases or liquids. Nozzles are essential in various applications, including rocket propulsion, spray systems, and industrial processes. The shape and size of a nozzle can significantly affect the speed and direction of the fluid flow, impacting efficiency and performance. Different types of nozzles, such as converging, diverging, and converging-diverging, serve specific purposes based on the desired outcome. For instance, a converging nozzle accelerates fluid to supersonic speeds, while a diverging nozzle is used to expand and slow down the flow. Proper nozzle design is crucial for optimizing performance in many engineering fields.