Automatic liquid crystal thermography for transient heat transfer measurements in hypersonic flow |
| |
| Authors: | H. Babinsky J. A. Edwards |
| |
| Affiliation: | (1) College of Aeronautics, Cranfield University, Cranfield, MK43 OAL Bedford, UK;(2) DRA Fort Halstead, Fort Halstead, TN14 7BP Kent, UK;(3) Present address: Dept. of Engineering, University of Cambridge, UK |
| |
| Abstract: | A technique has been developed to measure surface heat transfer on windtunnel models in hypersonic flow based on the colour response of encapsulated thermochromic liquid crystals. The method supplies results of a superior spatial resolution at experimental uncertainties comparable to traditional methods. The approach is different from other liquid crystal applications in several key areas. It combines the calibration of the liquid crystal coating with the actual mesurement and therefore allows for an efficient experiment. The method is automated in most steps involved. Results are shown for the flow over an axisymmetric compression corner at Mach 5 and compared with surface thermocouple measurements. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
