Applications are related to heat transfer on finned electric motors, automotive radiator, nanoparticle thermal performance, flow and heat transfer on sloped, rough surfaces, one-dimensional and two-dimensional radial fin models using the Integral Transform Technique and Frobenius Method, applying the Hardy Cross Method to solve water supply networks and designing a subsonic wind tunnel. Finned Electric Motors: an important industrial application of extended surfaces, fins, occurs in electric motors. Electric motors are of vital importance in the industry as they are used in machines of all types, including, for example, computer ventilation and other electronic equipment. Compact Heat Exchangers: the growing need for technological advances in automotive vehicles demands research that can increase heat exchange efficiency in many of its components. Thermal control of vehicle engines is achieved through finned radiators, classified as Compact Heat Exchangers. External Boundary Layer: the
