Stochastic resonance of cylinder induced wind flow

0425947 - ÚTAM 2014 CZ eng V - Research Report
Pospíšil, Stanislav - Kuznetsov, Sergeii - Trush, Arsenii - Král, Radomil
Stochastic resonance of cylinder induced wind flow.
Telč: Ústav teoretické a aplikované mechaniky, 2013. 8 s.
R&D Projects: GA MŠMT(CZ) ED1.1.00/02.0060
Institutional support: RVO:68378297
Keywords : stochastic resonance * aerodynamic phenomena * cylinder in turbulent flow
Subject RIV: JN - Civil Engineering

The response of a dynamic nonlinear single degree of freedom system to combination of addtive random Gaussian white noise and external deterministic periodic force applied to the aerodynamic phenomena is studied. It is coming to light that under certain circumstances the jumping between wells of the bistable elastic potential can occur leading to internal hopping. The frequency of this hopping can be for certain combination of input parameters nearly the constant and corresponding to external periodic force frequency. This state leads to high ratio of periodic component amplitude and intensity of the random component of the response proces. As the object was chosen in tubulent flow.
Permanent Link: http://hdl.handle.net/11104/0231784