Abstract
AbstractKolmogorov has formulated his two hypotheses of similarity in 1941 considering local‐isotropic turbulence, and later has refined his theory [1, 2]. In this paper are discussed three turbulent swirl flows generated by the three various axial fan types in‐built in the pipe. The spectral characteristics of the generated turbulent swirl flows are determined on the basis on the LDA (laser Doppler anemometry) experimental data for the circumferential velocity. In the inertial subranges these curves have the same tangent and obey the “‐ 5/3” Kolmogorov law. It is shown that in the generated turbulent swirl flows occur eddies of various scales, encompassing very wide spectra of wave numbers, i.e. frequencies.
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