Thermal Onset of Oscillation in a Pipe Containing Heat Sources

抄録

A self-excited oscillation in a pipe containing heat sources has been studied both experimentally and theoretically. Various parameters, total pipe length, relative location of heat sources, configuration of heat sources and so on have been clarified through quantitative experiments concerning the onset of an oscillation with three kinds of gases, air, helium, and carbon dioxide. New type of critical curve with pressure and temperature difference between the heat sources is presented in this paper. Thermodynamic state near heat sources has been visualized with an M-Z interferometer, which clearly shows the existence of heat cycles near them for the first time.