Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 04, 2021
Fluidyne is a Stirling engine consisting of a looped tube and a tuning column partially filled with liquid. In this study, for the purpose of lowering the critical oscillation temperature ratio of Fluidyne, it was calculated by linear stability analysis with changing the tuning column length and connection position. As a result, when the temperature on the low temperature side was 296K, the minimum critical oscillation temperature ratio of 1.10 was found with the tuning column length of 1.32 m and the length ratio of 2.7 between the liquid columns on the high and low temperature sides. We also calculated the Q value and confirmed that the enhancement of Q by the temperature ratio was responsible to the reduction of the oscillating temperature ratio. Finally, we focused on the pressure and velocity of the gas in the regenerator and discussed the acoustic power generation in the regenerator.
