Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems involving fluid flow. It involves the use of computers and mathematical models to simulate the behavior of fluid flow in various systems, such as aerodynamics, heat transfer, and chemical reactions. CFD is commonly used in engineering and scientific research to study and optimize the design and performance of various systems, such as aircraft, automobiles, pipelines, and HVAC systems. It can provide valuable insights into the behavior of fluids and help engineers and scientists make informed decisions to improve the efficiency and safety of their systems. Overall, CFD is a powerful tool that allows researchers and engineers to explore complex fluid flow phenomena in a virtual environment, leading to innovative solutions and advancements in various industries.