Abstract: A multi-stage duct system adaptable to generate maximum power from a wind turbine is presented. The multi-stage duct system comprises a plurality of wind turbine units. Each of the plurality of wind turbine units includes a plurality of turbine rings and a plurality of airfoils. The plurality of turbine rings defines to form a plurality of expanding stages and a plurality of contracting stages positioned in-line with a fluid flow direction. The multi-stage duct system further comprises a duct analysis unit having a plurality of axisymmetric ducts. The duct analysis unit utilizes a fluid dynamics mechanism to provide an optimal airfoil arrangement to the plurality of airfoils. The optimal airfoil arrangement optimizes a plurality of airfoil parameters associated with each of the plurality of airfoils thereby providing an efficient diffusion and an optimal fluid mass flow rate through the plurality of airfoils.