Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 30, 2019
Temperature distribution of thermoacoustic engine core was evaluated by heat transfer analysis using finite difference method coupled with pressure / velocity amplitude calculation based on linear thermoacoustic theory. For the calculation, two channel widths and three displacement amplitude were set up. From the temperature distribution, it is confirmed that temperature difference of both edges of regenerator decreases according to the increase of displacement amplitude. On the other hand, heat flux density at plate surface increased and its variation region extended with increasing displacement amplitude. As a result, variation region of local Nusselt number of heat exchanger was kept within displacement amplitude. However, there was also dependence of Nusselt number on non-dimensional values related to boundary layer thickness.
