Experiments in Developing Wakes
Abstract
A three-year program (with no cost extension through December 2014) was completed with 3 primary objectives: (1) To develop a robust refractive index matched method for time-resolved PIV measurements of early wakes in a stably-stratified fluid. (2) To use this technique to investigate one example of an early wake with new analysis methods. (3) To compare results with numerical simulations. Objectives (1) and (2) were completed and showed that previous ideas on universal and 3D initial conditions were not realistic. The ways in which this finding complicates generalization of ONR-relevant conditions is not yet clear. The objective^G is in process. Significant progress has been made in DMD descriptions of the experimental data, in readiness for similar modal comparisons in simulations. Simulations have been prepared and run in OpenFOAM. The implementation in Star/CCM-l- is not simple (despite our extensive inside contacts at the company), but progress is being made.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 27, 2014
- Accession Number
- ADA619192
Entities
People
- Geoffrey R. Spedding
Organizations
- University of Southern California