Laboratory exercises to study viscous boundary layers in the test section of an open-circuit wind tunnel
World Transactions on Engineering and Technology Education
UNESCO * International Centre for Engineering Education
Place of Publication
Laboratory exercises presented here were designed and tested in the fluid mechanics laboratory so as to study viscous boundary layers in the test section of an open-circuit wind tunnel. These exercises create hands-on learning opportunities through which students gain practical experience with the highly abstract concepts of viscous boundary layers. They yield results very close to those in the published literature. The introduction reviews the concepts of thicknesses of the viscous boundary layer over a flat plate with zero pressure gradient when the boundary layer is laminar and when it is turbulent. Lab exercise 1 shows how to use a wind tunnel to determine the speed of the air through its test section. Lab exercise 2 shows how students can measure boundary-layer thicknesses in the test section of the wind tunnel. Results compare very well with those from boundary-layer theory.
Josué Njock Libii (2010).
Laboratory exercises to study viscous boundary layers in the test section of an open-circuit wind tunnel. World Transactions on Engineering and Technology Education.8 (1), 91-96. Australia: UNESCO * International Centre for Engineering Education.