When the open end of a cylinder is under a dynamic pressure change at the natural
frequency of gas column inside the cylinder, the outward heat flux is generated at
the closed end, and inward heat flux is generated at the mid-point of the cylinder.
In this case, the phase shift between the open end and the closed end ia calculated
using non-linear software for fluid dynamics (ADINA-F).
However, the vibration node which is equivalent to the pressure change cannot be
calculated.
A thermo- physical phenomenon according to the expansion and contraction of the gas
in a cylinder is calculated in this case.
