Experiments on thermally driven acoustic oscillations of gaseous helium

✍ Scribed by T. Yazaki; A. Tominaga; Y. Narahara

• Publisher: Springer US
• Year: 1980
• Tongue: English
• Weight: 630 KB
• Volume: 41
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00117229

✦ Synopsis

This paper describes experimental studies of thermally driven acoustic oscillations of a gas column ("Taconis vibration ") generated in a pipe whose end is closed at the warm part and open at the cold part. The stability curves and the frequency diagrams of the oscillations are experimentally determined under a given temperature distribution for the ratio of warm length of pipe to cold length as a parameter. The existence of two branches as predicted by Rott's theory is confirmed. A finite boundary layer thickness plays an important role in exciting and characterizing this type of instability.