Date of Award


Degree Type


Degree Name



Mechanical, Automotive, and Materials Engineering


Engineering, Mechanical.




Knowledge of the flow characteristics of geometrically similar vortex diodes of different dimensions is essential in establishing the possible application of miniaturized vortex diodes in the medical field. The objective of this study is to find out whether Reynolds number and Eulers number are sufficient to describe the vortex diode performance and to experimentally verify the results obtained by finite element analysis. The steady-state, incompressible, three-dimensional, confined flow of water through vortex diodes at low Reynolds numbers was numerically and experimentally investigated. Three geometrically similar Plexiglas vortex diodes were constructed and tested for flows at low Reynolds numbers. The pressure drop across each diode was measured for various flow rates. Static characteristics of the vortex diodes for both forward and reverse flows are presented. The results indicate that in the Reynolds number range of 200 $<$ Re $<$ 3000 there is no noticeable scale effect on the static characteristics of the vortex diode. The Reynolds number is defined by the average axial velocity in the axial pipe and its diameter. The results also indicate that, due to the possible influence of viscous effects, the performance ratios are relatively small compared to those obtained at higher Reynolds numbers. There is also good agreement between the numerical and experimental results.Dept. of Mechanical, Automotive, and Materials Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1992 .M275. Source: Masters Abstracts International, Volume: 31-04, page: 1912. Thesis (M.A.Sc.)--University of Windsor (Canada), 1992.