[14p-PB4-1~6] 1.6 Ultrasonics

[14p-PB4-5] Effects on Acoustic Field by Inputting Heat Source in Acoustic Tube

〇Aiko Kido¹, Shin-ichi Sakamoto², Yoshiaki Watanabe¹ (1.Doshisha Univ., 2.Shiga Pref. Univ.)

Keywords:Thermoacoustic,Resonant mode,Heat input

Proposed improvement methods by our laboratory were a Phase Adjuster (PA) and Expanding Phase Adjuster (EPA) devices act as an amplifier and stabilizer of the system oscillation. However, there are some problems for these devices. Because of the solidified device and located in the thermoacoustic tube, it is difficult to tune and move them to the best setting position under the system is running. In this report, we propose the local heating method. Inputting heat method acts as the amplifier and stabilizer on thermoacoustic system by result obtained from experiment.