Visualization of heat transfer distributions in a gas turbine scroll

✍ Scribed by Ishida, Katsuhiko

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 189 KB
• Volume: 27
• Category: Article
• ISSN: 0096-0802
• DOI: 10.1002/(sici)1520-6556(1998)27:3<229::aid-htj5>3.0.co;2-x

✦ Synopsis

To visualize heat transfer distributions in systems with complex internal geometries, an experimental technique using a combination of the transient method and the hysteresis effect of thermopaint was developed. A mercury compound based thermopaint was used as a temperature indicator. Features of the paint are its reusability and its hysteresis nature. Isothermal lines visualized by the thermopaint are preserved after the experiment by utilizing the hysteresis nature. Also heat transfer on those parts that are hidden behind other parts can be visualized. Effects of initial and air temperature on the measurement uncertainty were evaluated. With this method, local heat transfer coefficients were obtained on the model scroll of a single can type combustor.