Optical Pressure and Temperature Mapping
Abstract
Experimental validation of turbine performance is a challenging task because the high temperatures, scale of the hardware, and gas composition make taking data in a real turbine virtuously impossible. Facilities such as the Air Force Turbine Research Facility (TRF) enable acquisition of data through simulation of the turbine environment. This blow-down facility for testing full-scale turbine hardware allows control of the gas temperature and composition and matches the Reynolds number, pressure ratio, corrected speed, and temperature ratios in a more benign environment. The facility is instrumented with thermocouples, heat-flux gauges, and pressure taps for collecting experimental data. Typically high-frequency-response measurements are made at particular static locations, resulting in low spatial resolution. Recently these measurements have been supplemented with temperature - (TSP) and pressure-sensitive paints (PSP) that allow high-spatial-resolution measurements at low frequency. In this test program, temperature, pressure, and heat flux are measured using traditional gauges, and temperature and pressure are measured using TSP and PSP at a range of flow conditions. A comparison of the thermocouple and pressure-tap data with the TSP/PSP data indicates similar mean results, suggesting that the paints can be implemented into the TRF and high-spatial-resolution data obtained with reasonable accuracy at moderate temperatures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2005
- Accession Number
- ADA442998
Entities
People
- E. G. Jones
- Jimmy W. Crafton
- Larry P. Goss
- Sergey D. Fonov