Abstract: | The linear stability of a barotropic fluid flow in a circular absolutely rigid tube is considered. The behavior of perturbations in the form of monoharmonic waves resulting from the viscosity as well as the compressibility of the fluid is investigated. It is shown that the compressibility of the fluid affects the first type of perturbations only slightly and the second significantly and that the latter can be more dangerous from the standpoint of initiating instability, even for weakly compressible flows. Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 2, pp. 5–10, March–April, 1994. |