Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7052106 | Experimental Thermal and Fluid Science | 2016 | 6 Pages |
Abstract
Mean wall shear stress in a turbulent channel flow has been measured using a film-based shear stress sensor with a working principle based on the deformation of a thin elastic film. A direct comparison was made between the elastic film measurements and those using oil-film interferometry in the same experimental facility to evaluate the capability of the novel technique to measure the mean wall shear stress. The results indicate that the film-based sensor measures the wall shear stress within the uncertainty of the oil film measurement for the range of Reynolds numbers considered here, i.e. 2100-2900 based on the friction velocity and the half channel height.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Omid Amili, Michael D. Hind, Jonathan W. Naughton, Julio Soria,