👉 A multi-fluid system, also known as a multi-phase fluid system, refers to a complex arrangement where more than one type of fluid coexists and interacts within the same system. This can include combinations of liquids, gases, and even slurries or suspensions. These systems are prevalent in various engineering applications such as oil and gas extraction, chemical processing, and power generation, where different fluids may have distinct physical properties and behaviors. The interactions between these fluids can lead to complex dynamics, including phase separation, flow patterns, and heat transfer phenomena, which must be carefully managed to optimize system performance and efficiency. Understanding and modeling multi-fluid systems is crucial for designing and operating these critical industrial processes effectively.