Blade Element Momentum Theory

Blade Element Momentum Theory (BEMT) is a method used to analyze the performance of wind turbines and similar rotating blades. It combines two concepts: the blade element theory, which examines how air interacts with individual sections of a blade, and momentum theory, which looks at how the flow of air is affected by the blades' motion. By breaking down the blades into smaller segments, BEMT calculates forces like lift and drag, allowing engineers to predict how efficiently a turbine will convert wind energy into mechanical power. This helps in designing better, more efficient turbine systems.