Particle paths in three-dimensional flow fields as a means of study: opposing jet mixing system

Particle paths can provide a tool for the analysis of mixing process. As an example, we will consider an opposing jet mixing system. Experimental, full-field, time-revolved, velocity vector data have been obtained using three-dimensional particle tracking velocimetry (PTV) technique. Using this field as a basis, hypothetical particles are injected anywhere and at any time into the field. The particles are then tracked as they move under the influence of the velocity field. The injected hypothetical particles can be neutrally buoyant or given a different density than the fluid. Color graphical representation of the results cannot be conveniently reported here; however, examples are provided in an equivalent gray-level coding. A more thorough presentation is possible by using color. These are provided at the URL (Uniform Resource Locator, i.e., the address for a location on the Internet) cited in Zhao and Brodkey [Y. Zhao, R.S. Brodkey, Particle paths in three-dimensional flow fields as a means of study: opposing jet mixing system, http:/ /www.er6.eng.ohio-state.edu/similar to brodkey/ojindex.htm. See item on Paper to be published in a Special Issue of Powder, 1997]. (C) 1998 Elsevier Science S.A. All rights reserved.