Numerical Analysis of the Internal and External Dynamics of a Fluidic Oscillator

摘要

The purpose of this research is to establish a computational model of the dynamics in a fluidic oscillator to get a better understanding of its key operational characteristics. This research uses readily available CFD software to simulate experiments. A simulation was developed for which parameters could be changed to perform runs under subsonic or supersonic conditions. This method allows for nearly endless data collection possibilities.;With numerical validation being an aspect of this research, studies were done to compare the results with experiments that have been similar conditions. To determine the soundness of a computational space, further analysis was needed to understand the effects that meshes can have on the accuracy of a solution. In addition, a dynamic analysis was done on the main features of the fluidic oscillator. Places of interest include the inlet and outlet, feedback channels, diverter walls, and the external flow field. Correlations made between the different operating conditions provided insight in how to design an oscillator to work more efficiently under higher operating speeds.