### Abstract

in all the L/D geometry ratios. The radial component of the axial velocity profile in the liquid film ahead of the leading Taylor bubble is represented by a power law function; with exponent n=6.1 for L/D=833.3 and n=5.7 for L/D=1666.7. Despite a decrease in the exponent as L/D ratio increases, the full parabolic profile could not be reached. This suggests that further investigation on L/D

ratio incorporating other inherent variables which are likely to affect the development of the full parabolic profile may be required.

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

Article number | 00003 |

Pages (from-to) | 1-7 |

Number of pages | 7 |

Journal | Journal of Oil, Gas and Petrochemical Sciences |

Volume | 1 |

Issue number | 1 |

Publication status | Published - 19 Dec 2017 |

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### Cite this

**Effect of length-to-diameter ratio on axial velocity and hydrodynamic entrance length in air-water two-phase flow in vertical pipes.** / Chidamoio, Joao F.; Akanji, Lateef; Rafati, Roozbeh.

Research output: Contribution to journal › Article

*Journal of Oil, Gas and Petrochemical Sciences*, vol. 1, no. 1, 00003, pp. 1-7.

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TY - JOUR

T1 - Effect of length-to-diameter ratio on axial velocity and hydrodynamic entrance length in air-water two-phase flow in vertical pipes

AU - Chidamoio, Joao F.

AU - Akanji, Lateef

AU - Rafati, Roozbeh

PY - 2017/12/19

Y1 - 2017/12/19

N2 - The effect of pipe length-to-diameter ratio (L/D) on air-water two phase slug flow regime development is hereby investigated. Axial velocity along the leading Taylor bubble and hydrodynamic entrance length required to establish a fully developed parabolic profile were critically assessed. The eccentricity distribution of axial velocity on leading Taylor bubble stream and on its nose is observedin all the L/D geometry ratios. The radial component of the axial velocity profile in the liquid film ahead of the leading Taylor bubble is represented by a power law function; with exponent n=6.1 for L/D=833.3 and n=5.7 for L/D=1666.7. Despite a decrease in the exponent as L/D ratio increases, the full parabolic profile could not be reached. This suggests that further investigation on L/Dratio incorporating other inherent variables which are likely to affect the development of the full parabolic profile may be required.

AB - The effect of pipe length-to-diameter ratio (L/D) on air-water two phase slug flow regime development is hereby investigated. Axial velocity along the leading Taylor bubble and hydrodynamic entrance length required to establish a fully developed parabolic profile were critically assessed. The eccentricity distribution of axial velocity on leading Taylor bubble stream and on its nose is observedin all the L/D geometry ratios. The radial component of the axial velocity profile in the liquid film ahead of the leading Taylor bubble is represented by a power law function; with exponent n=6.1 for L/D=833.3 and n=5.7 for L/D=1666.7. Despite a decrease in the exponent as L/D ratio increases, the full parabolic profile could not be reached. This suggests that further investigation on L/Dratio incorporating other inherent variables which are likely to affect the development of the full parabolic profile may be required.

M3 - Article

VL - 1

SP - 1

EP - 7

JO - Journal of Oil, Gas and Petrochemical Sciences

JF - Journal of Oil, Gas and Petrochemical Sciences

IS - 1

M1 - 00003

ER -