Visualization of a Wall Shear Flow

Subtitle: Development of a New Particle Image Interrogation Method

Article type: Research Article

Authors: Debaene, P. | Kertzscher, U. | Goubergrits, L. | Affeld, K.

Affiliations: Biofluidmechanics Laboratory, Charité Universitätsmedizin Berlin, Spandauer Damm 130, 14050 Berlin, Germany. E-mail: [email protected]

Abstract: In this paper we propose a new method which might be useful to investigate the flow fields close to vaulted walls with spatial and temporal resolution. This kind of flow visualization is important in the field of biofluid mechanics, since a close relationship is assumed between flow and biological phenomena. This new method is non-invasive, and is also applicable for unsteady flows. It has been used to investigate the steady and the unsteady laminar flow in a rectangular duct, as well as the steady, laminar flow in two different U-shaped ducts, both with a backward facing step, one having a rectangular cross-section, the other a nearly elliptical cross-section. The results concurred well with analytical or numerical solutions.

Keywords: Velocity measurement, Wall shear stress, Biofluid mechanics

Journal: Journal of Visualization, vol. 8, no. 4, pp. 305-313, 2005