### Abstract

Cavity flow induced by a fluctuating gravitational field normal to an initially imposed density gradient is considered. This configuration is a simplified model to study fluid flow in a directional solidification cell subjected to external accelerations, such as those encountered in a typical microgravity environment. The effect of both periodic deterministic disturbances and narrow band noise are considered. It is found in the latter case that the mean squared displacement of a fluid element grows as a power law in time, and that the particular exponent depends on whether viscous effects are important.

Original language | English (US) |
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Title of host publication | Fluid Mechanics Phenomena in Microgravity |

Publisher | Publ by ASME |

Pages | 133-138 |

Number of pages | 6 |

Volume | 174 |

ISBN (Print) | 0791810372 |

State | Published - Dec 1 1993 |

Event | Proceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA Duration: Nov 28 1993 → Dec 3 1993 |

### Other

Other | Proceedings of the 1993 ASME Winter Annual Meeting |
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City | New Orleans, LA, USA |

Period | 11/28/93 → 12/3/93 |

### Fingerprint

### Cite this

*Fluid Mechanics Phenomena in Microgravity*(Vol. 174, pp. 133-138). Publ by ASME.

**Convection induced by a fluctuating acceleration field.** / Casademunt, Jaume; Vinals, Jorge.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Fluid Mechanics Phenomena in Microgravity.*vol. 174, Publ by ASME, pp. 133-138, Proceedings of the 1993 ASME Winter Annual Meeting, New Orleans, LA, USA, 11/28/93.

}

TY - GEN

T1 - Convection induced by a fluctuating acceleration field

AU - Casademunt, Jaume

AU - Vinals, Jorge

PY - 1993/12/1

Y1 - 1993/12/1

N2 - Cavity flow induced by a fluctuating gravitational field normal to an initially imposed density gradient is considered. This configuration is a simplified model to study fluid flow in a directional solidification cell subjected to external accelerations, such as those encountered in a typical microgravity environment. The effect of both periodic deterministic disturbances and narrow band noise are considered. It is found in the latter case that the mean squared displacement of a fluid element grows as a power law in time, and that the particular exponent depends on whether viscous effects are important.

AB - Cavity flow induced by a fluctuating gravitational field normal to an initially imposed density gradient is considered. This configuration is a simplified model to study fluid flow in a directional solidification cell subjected to external accelerations, such as those encountered in a typical microgravity environment. The effect of both periodic deterministic disturbances and narrow band noise are considered. It is found in the latter case that the mean squared displacement of a fluid element grows as a power law in time, and that the particular exponent depends on whether viscous effects are important.

UR - http://www.scopus.com/inward/record.url?scp=0027842065&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027842065&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0027842065

SN - 0791810372

VL - 174

SP - 133

EP - 138

BT - Fluid Mechanics Phenomena in Microgravity

PB - Publ by ASME

ER -