### Abstract

A theoretical analysis for the onset of gas pull-through (entrainment) during discharge from a stratified two-phase region through two vertically aligned side branches has been developed in this paper. Initially, a simplified point-sink model was developed; this was followed by the acquisition of a more accurate finite branch model. The predicted value of the critical height at the onset of gas entrainment was found to be a function of each branches' corresponding Froude number (Fr_{1} and Fr_{2}), as well as the ratio between the vertical distance connecting the centerlines of the two branches and the diameter of the branches (L/d). The predicted values of the critical heights were found to be consistent with the corresponding experimental data at different values of Fr_{1} Fr_{2} and L/d. From the basis of the present models, it was established that when increasing the flow through the lower branch, the critical height increased for all values of Fr_{1} and L/d. In addition, it was found that increasing the vertical distance between the two branches, reduced the effects of the lower branch on the determination of the critical height.

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

Title of host publication | Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference |

Subtitle of host publication | Volume 1, part B, Forums |

Editors | A. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, M. Kawahashi |

Pages | 1425-1431 |

Number of pages | 7 |

Publication status | Published - 1 Dec 2003 |

Externally published | Yes |

Event | 4th ASME/JSME Joint Fluids Engineering Conference - Honolulu, HI, United States Duration: 6 Jul 2003 → 10 Jul 2003 |

### Publication series

Name | Proceedings of the ASME/JSME Joint Fluids Engineering Conference |
---|---|

Volume | 1 B |

### Other

Other | 4th ASME/JSME Joint Fluids Engineering Conference |
---|---|

Country | United States |

City | Honolulu, HI |

Period | 6/7/03 → 10/7/03 |

### Fingerprint

### ASJC Scopus subject areas

- Mechanical Engineering
- Fluid Flow and Transfer Processes

### Cite this

*Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 1, part B, Forums*(pp. 1425-1431). (Proceedings of the ASME/JSME Joint Fluids Engineering Conference; Vol. 1 B).