### Abstract

Effects of free-stream turbulence on a separation bubble formed along a side of a blunt plate with right-angled corners are studied. The free-stream turbulence was generated by a thin circular rod which was placed at a certain distance upstream of the plate along its stagnation streamline. Various characteristic parameters of the separation bubble such as the bubble length, the integral length scale of large-scale vortices, the maximum pressure difference in the bubble, a few characteristics lengths of the time-mean pressure profile etc. are fairly well correlated with the turbulence intensity just outside the separated shear layer near the edge. The turbulence length scale there was a fairly unique function of the turbulence intensity. Statistical properties of the fluctuating surface pressure are also studied and used to demonstrate the large-scale vortices in the reattaching zone. The maximum r.m.s. surface pressure was found to be estimated in terms of the longitudinal gradient of the time-mean pressure and the length scale of vortices in the reattaching zone.

Original language | English |
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Pages (from-to) | 375-386 |

Number of pages | 12 |

Journal | Journal of Wind Engineering and Industrial Aerodynamics |

Volume | 14 |

Issue number | 1-3 |

DOIs | |

Publication status | Published - Dec 1983 |

Externally published | Yes |

### All Science Journal Classification (ASJC) codes

- Fluid Flow and Transfer Processes
- Aerospace Engineering
- Building and Construction