USE OF A PULSE HEATED FINE WIRE PROBE FOR THE MEASUREMENT OF TOTAL TEMPERATURE IN SHOCK DRIVEN FACILITIES.
Abstract
A fine wire placed in a flow stream will experience an energy transfer rate dependent on various flow properties and on the difference between a wire recovery temperature T sub R and the wire temperature T sub w. By applying an electrical pulse T sub w can be varied during the flow duration, and from measurements made on the wire the value of T sub R (or its subsequent history if it is time dependent) can be determined. The stagnation temperature approximates the quantity T sub R and can be determined directly from it in many applications. Measurements behind an incident shock in a shock tube has resulted in measurements of T sub s to within 5% of that calculated from shock velocity. Applications of the technique to hypersonic near wakes and to boundary layers undergoing transition are demonstrated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1968
- Accession Number
- AD0826149
Entities
People
- E. J. Softley
Organizations
- General Electric