Abstract
Thermoacoustic cooler is one of promising technique for utilization of unused thermal energy. The object of this paper is to study acoustic field and temperature field in looped-tube-type thermoacoustic cooler. Using finite-difference time-domain (FDTD) method and energy equations, pressure, particle velocity and temperature were numerically simulated for various stack structure. By propagating sound in the stack, the temperature gradient was generated. It was also found that the effect of thermoacoustic cooling depends on mesh size in the stack. Summarizing these results, the mechanism of thermoacoustic cooling was discussed in relation to thermal response of stack and phase difference.
