Influence of Train Piston Effect on the Subway Fans
A. M. KRASYUK1, P. V. KOSYKH2, E. YU. RUSSKY1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Novosibirsk State Technical University, pr. Marksa 20, Novosibirsk, 630073 Russia
Keywords: Train frequency, air distortion, spectrum analysis, subway fan, vibration amplitude, fan load, fatigue strength, frequency spectrum
Abstract
The article presents the results of the spectrum analysis of air distortion under train piston effect in the subway. The authors offer a procedure for estimating influence of air distortion on torsional behavior of tunnel fan rotor. It is shown that with a variable frequency drive, it is possible that harmonic frequencies of the disturbed flow coincide with the eigenfrequencies of the rotor.
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