Abstract

Abstract Thermal effects caused by oscillations of gas columns are experimentally studied for two cases: forced oscillations of gas columns with initially uniform temperature and thermally driven acoustic oscillations of gas columns with steep temperature gradients (Taconis oscillations). It is demonstrated that two types of heat flow exist; from pressure node to velocity node and from the warm part to the cold. The pressure and boundary layer dependences of thermal effects are qualitatively compared with thermoacoustic theory.

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