Studies on sound field with non-adiabatic system

它是声音的传播，到目前为止一直作为绝热系统进行讨论，但热量的运动不能忽略，例如，在非常薄的管道中。在本研究中，我进行了引入分子动力学方法的波传播计算，声场分析，我也认识到声场测量技术并没有进一步影响声场，然后从计算和实验两个方面阐明了在传热不可忽略的状态下的声场，从而使声场计算在用分子动力学方法考虑传热。本文还提出了非线性声场的计算方法，使非线性现象的计算成为可能。此外，建立了使用高速摄像机或激光器不影响声场的声场测量技术，证实了细管中声场的行为。

It is the propagation of sound, which has been discussed as adiabatic system so far, but the movement of heat can not be ignored, for example, in the tube very thin. In this study, I perform the calculation of wave propagation which introduced the molecular dynamics method, the analysis of the sound field, and I also realize the sound field measurement technique does not affect the sound field further, and then it is intended to elucidate the sound field in a state that can not be ignored transfer of heat from both the calculations and experiments.Which made it possible to sound field calculation in consideration of heat transfer by using the molecular dynamics method. I also proposed methods to nonlinear sound field, which makes it possible to calculate the non-linear phenomena. Further, establishing sound field measurement techniques that does not affect the sound field using a high-speed camera or a laser, it was confirmed the behavior of the sound field in the thin tube.