Frequency spectrum investigatios for pulsations of gas flow in tube for nonstationary conditions

Аuthors

Kraev V. M.

RaiffaizenBank, 15А, Leninskii prospect, Moscow, 119071, Russia

e-mail: kraevvm@mail.ru

Abstract

Experimental data are obtained about a structure of turbulent stream for a flow within a circular pipe. Stationary and nonstationary modes of the flow are considered. Frequency spectra are calculated for axial and radial velocity fluctuations based on the data. An analysis is carried out for influence of hydrodynamic nonstationarity on causes of generating and propagation of the turbulent fluctuations.