## Abstract

Aperiodic time series of hot-wire signals can be described as trajectories in a state space representation. The flow vector field is calculated by numerical differentiation of these trajectories and then each component of the flow vector field is approximated by a polynomial of order p. This approximation provides a model for the dynamics of the von Kármán vortex street by a low-dimensionai system of ordinary differential equations. At a Reynolds number of 114 a compact description of the complex dynamics of the vortex street by a set of only ten parameters can be obtained. It will be shown that these parameters are independent of the probe position for distances greater than two-and-one-half cylinder diameters.

Original language | English (US) |
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Pages (from-to) | 479-481 |

Number of pages | 3 |

Journal | Physics of Fluids A |

Volume | 2 |

Issue number | 4 |

DOIs | |

State | Published - 1990 |

Externally published | Yes |

## ASJC Scopus subject areas

- Engineering(all)