Advanced Diagnostic Techniques Development for Supersonic and Subsonic Combusting Flowfields.
Abstract
The goal of this program was to address instrumentation problems associated with studying unsteady supersonic and subsonic combustion flows by extending the Particle Imaging Velocimetry (PIV) technique and developing surface techniques capable of pressure, temperature, and heat transfer measurements. Optical-based non-intrusive instrumentation was designed and demonstrated in the Supersonic Combustion Tunnel at Wright Laboratory. The following tasks were accomplished: (1) Significant improvements in PIV analysis software included a new 2D-FFT correlator, a new graphic user interface, increased capacity to read the Kodak color camera files directly, and enhancement of postprocessing routines. (2) New and improved pressure and temperature paints were developed, allowing--for the first time--measurements in diverse, high temperature environments. The temperature range of the pressure paints was significantly increased to 160 deg C. (3) New pressure and temperature paints were applied in the Supersonic Combustion Facility for studying fuel injectors in a Mach 2 flowfield. (4) The design of a lifetime based pressure and temperature instrument was finalized and preliminary experiments conducted. (5) An optical heat flux sensor based on thermographic phosphors was developed and evaluated in a backward facing step test apparatus. Potential applications of these techniques include testing and evaluation in the aerospace, automotive, industrial processing, and architectural industries.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 13, 1996
- Accession Number
- ADA322830
Entities
People
- L. P. Gross