Fundamental Turbulence Mechanisms in Multi-Stream Flows: A Comprehensive Joint Experimental, Theoretical and Computational Study
Abstract
In this effort we deployed, to a multi-stream Single Expansion Rectangular Nozzle (SERN), the latest advances in simulations,experimental methods and analysis tools denoted the Fluids Information Triad (FIT) in a tightly integrated manner that fuses their respective strengths. Our interest in the multi-stream SERN is distilled from the fact that such a configuration is of intense current interest to the USAF, as it seeks new exhaust systems that maximize efficiency and performance of future aircraft. We have demonstrated the effectiveness of the FIT approach through the integration of experiments and simulations. The experiments have brought to bear high-fidelity diagnostics, while the simulations have employed Large-Eddy Simulations. In this study we have focused on validation, data fusion and flow physics. Substantial effort has been expended on establishing the accuracy of these results through detailed two-way validation exercises. We have found excellent comparison for example between mean planar PIV with averaged Large-Eddy Simulation (LES) data, pointwise comparison of the evolution of the shear layer downstream of the deck as well as instantaneous measured and simulated Schlieren images. These and other results in like vein clearly establish the realism of our data acquisition and generation techniques.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 28, 2019
- Accession Number
- AD1085872
Entities
People
- Datta V. Gaitonde
- Jacques Lewalle
- Mark Glauser
Organizations
- Syracuse University