### Abstract

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

Pages (from-to) | 153-165 |

Number of pages | 13 |

Journal | Flow, Turbulence and Combustion |

Volume | 68 |

Issue number | 2 |

Publication status | Published - Mar 2002 |

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### Bibliographical note

The original publication is available to subscribers at www.springerlink.com### Keywords

- spray stopping distance
- turbulent dispersion
- two-phase flow

### Cite this

*Flow, Turbulence and Combustion*,

*68*(2), 153-165.

}

*Flow, Turbulence and Combustion*, vol. 68, no. 2, pp. 153-165.

**Spray penetration in a turbulent flow.** / Pozorski, J.; Sazhin, Sergei; Waclawczyk, M.; Crua, Cyril; Kennaird, D.; Heikal, Morgan.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Spray penetration in a turbulent flow

AU - Pozorski, J.

AU - Sazhin, Sergei

AU - Waclawczyk, M.

AU - Crua, Cyril

AU - Kennaird, D.

AU - Heikal, Morgan

N1 - The original publication is available to subscribers at www.springerlink.com

PY - 2002/3

Y1 - 2002/3

N2 - Analytical expressions for mass concentration of liquid fuel in a spray are derived taking into account the effects of gas turbulence, and assuming that the influence of droplets on gas is small (intitial stage of spray development). Beyond a certain distance the spray is expected to be fully dispersed. This distance is identified with the maximum spray penetration. Then the influence of turbulence on the spray stopping distance is discussed and the rms spray penetration is computed from a trajectory (Lagrangian) approach. Finally, the problem of spray penetration is investigated in a homogeneous two-phase flow regime taking into account the dispersion of spray away from its axis. It is predicted that for realistic values of spray parameters the spray penetration at large distances from the nozzle is expected to be proportional to t 2/3 (in the case when this dispersion is not taken into account this distance is proportional to t 1/2). The t 2/3 law is supported by experimental observations for a high pressure injector.

AB - Analytical expressions for mass concentration of liquid fuel in a spray are derived taking into account the effects of gas turbulence, and assuming that the influence of droplets on gas is small (intitial stage of spray development). Beyond a certain distance the spray is expected to be fully dispersed. This distance is identified with the maximum spray penetration. Then the influence of turbulence on the spray stopping distance is discussed and the rms spray penetration is computed from a trajectory (Lagrangian) approach. Finally, the problem of spray penetration is investigated in a homogeneous two-phase flow regime taking into account the dispersion of spray away from its axis. It is predicted that for realistic values of spray parameters the spray penetration at large distances from the nozzle is expected to be proportional to t 2/3 (in the case when this dispersion is not taken into account this distance is proportional to t 1/2). The t 2/3 law is supported by experimental observations for a high pressure injector.

KW - spray stopping distance

KW - turbulent dispersion

KW - two-phase flow

M3 - Article

VL - 68

SP - 153

EP - 165

JO - Flow, Turbulence and Combustion

JF - Flow, Turbulence and Combustion

SN - 1573-1987

IS - 2

ER -