A One-Dimensional Breakup Model for Low-Speed Jets

Yi, Yaxing; Reitz, Rolf D.

doi:10.1615/atomizspr.v12.i56.80

Cited by 6 publications

(8 citation statements)

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“…7 that the jet surface distortion leads to formation of large size main drops with smaller satellite drops interspaced between them, as has been reported in past studies (Sellens, 1992, Yi & Reitz, 2002. When the necking portion of the jet touches the centerline, the main and satellite drops will detach from the jet.…”

Section: Resultssupporting

confidence: 57%

“…(3) and the assumption that the axial velocity is independent of the radial distance. Following Yi & Reitz (2002), the gas pressure is taken from the linearized gas equation of motion at the liquid-gas interface (Reitz & Bracco, 1982);…”

Section: Theoretical Formulationmentioning

confidence: 99%

“…He also employed a linearized form of the surface tension term in his formulation. Yi & Reitz (2002) was the first to introduce the aerodynamic effects in the one-dimensional nonlinear modeling approach. Their work also included the effects of viscosity and the exact form of the surface tension term as given by Levich (1962).…”

Section: Introductionmentioning

confidence: 99%

“…In the present work, Yi & Reitz's (2002) approach is adopted in the numerical simulations of a viscous water jet issued in air. However, a novel derivation method and a robust numerical solution technique of the governing equations are presented.…”

Section: Introductionmentioning

confidence: 99%

“…These instabilities may have originated from the application of central-differencing based finite difference schemes particularly at smaller viscous forces. The present study focuses on predictions and validations of the atomization model by itself and not as a component in a global spray model such as that undertaken by Yi & Reitz (2002). In addition, the independent effects of viscous and aerodynamic forces on atomization are examined.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Atomization of Shear Coaxial Liquid Jets

Ibrahim¹,

Kenny²,

Walker³

2010

APR

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The instability and subsequent atomization of a viscous liquid jet emanated into a high-pressure gaseous surrounding is studied both computationally and experimentally. Liquid water issued into nitrogen gas at elevated pressures is used to simulate the flow conditions in a coaxial shear injector element relevant to liquid propellant rocket engines. The theoretical analysis is based on a simplified mathematical formulation of the continuity and momentum equations in their conservative form. Numerical solutions of the governing equations subject to appropriate initial and boundary conditions are obtained via a robust finite difference scheme. The computations yield real-time evolution and subsequent breakup characteristics of the liquid jet. The experimental investigation utilizes a digital imaging technique to measure resultant drop sizes. Data were collected for liquid Reynolds number between 2,500 and 25,000, aerodynamic Weber number range of 50-500 and ambient gas pressures from 150 to 1200 psia. Comparison of the model predictions and experimental data for drop sizes at gas pressures of 150 and 300 psia reveal satisfactory agreement particularly for lower values of investigated Weber number. The present model is intended as a component of a practical tool to facilitate design and optimization of coaxial shear atomizers.

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Section: Resultssupporting

confidence: 57%

Section: Theoretical Formulationmentioning

confidence: 99%