Laboratory and Numerical Experiments Supporting the Improvement of Vortex Predictions in the Fastwake Numerical Code and Studies of Velocity in Stratified Turbulence (original) (raw)
This report documents the results of ONR Contract N00014-99-C-0169. Three tasks were performed on this contract. The first task was to determine, through laboratory experiments and numerical simulations, how a vortex pair detrains fluid as a function of time. The motivation for this study was to determine how the fluid in a migrating vortex cell changes as the vortex pair migrates through the fluid. This study was performed in order to allow SAIC to compare predictions from the FASTWAKE code to experimental measurements. In the experimental part of the study, a vortex pair was generated by a lifting wing, and the detrainment of fluid from the vortex cell was determined for different values of Froude number. These results were then simulated with a 3-D numerical code. The results from this task are presented in Section 2. The second task in this contract was to determine the existence of oceanographic data that might be useful in understanding the results of a previous study. The res...
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