### Abstract

A multi-level model for the calculation of tidal flow and material diffusion of a bay has been developed to simulate ocean environmental problems. Recently, it has been extended to the problem of a bay with a very large floating structure or a mega-float. However, the validation of the application is required before the model can be generalized, because the multi-level model is based on a quasi-three dimensional method with hydrostatic pressure approximation. In this paper, results of a model experiment are compared with those of numerical calculations and the applicability of multi-level model is discussed. In the model experiments, the flow around a towed pontoon was measured. The draft was changed to investigate the effect of draft/water depth ratio, and the mass-flux below a pontoon was estimated from the measured velocity profile. Then measured distributions of velocity and mass-flux below the pontoon are compared with calculations by a multi-level model in which the existence of a mega-float is taken into account.

Original language | English |
---|---|

Title of host publication | Proceedings of the International Offshore and Polar Engineering Conference |

Editors | J.S. Chung, C.H. Kim, M. Olagnon, S. Naito |

Publisher | Int Soc of Offshore and Polar Engineerns (ISOPE) |

Pages | 595-602 |

Number of pages | 8 |

Volume | 1 |

Publication status | Published - 1997 |

Externally published | Yes |

Event | Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4) - Honolulu, HI, USA Duration: May 25 1997 → May 30 1997 |

### Other

Other | Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4) |
---|---|

City | Honolulu, HI, USA |

Period | 5/25/97 → 5/30/97 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Ocean Engineering

### Cite this

*Proceedings of the International Offshore and Polar Engineering Conference*(Vol. 1, pp. 595-602). Int Soc of Offshore and Polar Engineerns (ISOPE).

**On validation of multi-level method for simulation of flow around a mega-float : Comparison of numerical calculation with model experiment.** / Omori, Hideyuki; Kyozuka, Yusaku; Hu, Changhong.

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

*Proceedings of the International Offshore and Polar Engineering Conference.*vol. 1, Int Soc of Offshore and Polar Engineerns (ISOPE), pp. 595-602, Proceedings of the 1997 7th International Offshore and Polar Engineering Conference. Part 3 (of 4), Honolulu, HI, USA, 5/25/97.

}

TY - GEN

T1 - On validation of multi-level method for simulation of flow around a mega-float

T2 - Comparison of numerical calculation with model experiment

AU - Omori, Hideyuki

AU - Kyozuka, Yusaku

AU - Hu, Changhong

PY - 1997

Y1 - 1997

N2 - A multi-level model for the calculation of tidal flow and material diffusion of a bay has been developed to simulate ocean environmental problems. Recently, it has been extended to the problem of a bay with a very large floating structure or a mega-float. However, the validation of the application is required before the model can be generalized, because the multi-level model is based on a quasi-three dimensional method with hydrostatic pressure approximation. In this paper, results of a model experiment are compared with those of numerical calculations and the applicability of multi-level model is discussed. In the model experiments, the flow around a towed pontoon was measured. The draft was changed to investigate the effect of draft/water depth ratio, and the mass-flux below a pontoon was estimated from the measured velocity profile. Then measured distributions of velocity and mass-flux below the pontoon are compared with calculations by a multi-level model in which the existence of a mega-float is taken into account.

AB - A multi-level model for the calculation of tidal flow and material diffusion of a bay has been developed to simulate ocean environmental problems. Recently, it has been extended to the problem of a bay with a very large floating structure or a mega-float. However, the validation of the application is required before the model can be generalized, because the multi-level model is based on a quasi-three dimensional method with hydrostatic pressure approximation. In this paper, results of a model experiment are compared with those of numerical calculations and the applicability of multi-level model is discussed. In the model experiments, the flow around a towed pontoon was measured. The draft was changed to investigate the effect of draft/water depth ratio, and the mass-flux below a pontoon was estimated from the measured velocity profile. Then measured distributions of velocity and mass-flux below the pontoon are compared with calculations by a multi-level model in which the existence of a mega-float is taken into account.

UR - http://www.scopus.com/inward/record.url?scp=0030649514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030649514&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0030649514

VL - 1

SP - 595

EP - 602

BT - Proceedings of the International Offshore and Polar Engineering Conference

A2 - Chung, J.S.

A2 - Kim, C.H.

A2 - Olagnon, M.

A2 - Naito, S.

PB - Int Soc of Offshore and Polar Engineerns (ISOPE)

ER -