Primary breakup simulation of a liquid jet discharged by a low-pressure compound nozzle

Cousin, Jean; Berlemont, Alain; Ménard, Thibaut; Grout, Sébastien

doi:10.1016/j.compfluid.2012.04.013

Cited by 12 publications

(18 citation statements)

References 29 publications

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“…Fluids properties of water and air are given in the Table 5. As previously observed in jet atomization simulations (Cousin et al [3]), boundary layers have a strong influence on the instabilities development. To be consistent with the experiment [29] at the channel entrance, the velocity field is defined as follow in order to fit with experimental profiles given by [29].…”

Section: The Sheared Liquid Sheetsupporting

confidence: 69%

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A consistent mass and momentum flux computation method for two phase flows. Application to atomization process

et al. 2017

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This paper presents a new computational method for consistent calculation of mass and momentum fluxes in a two-phase flow simulation. The problem of inconsistency of the mass and momentum transfers has been long known in the two-phase flow context. Once the density ratio between fluid phases becomes high, and/or the momentum of one phase differs significantly from that of the other, a decoupling phenomenon causes a non-physical transfer of momentum, rendering most codes unstable. Original works of Rudman [31] have addressed this by proposing a way to couple the mass and momentum flux transport. To ensure this consistency between both fluxes in a staggered configuration, Rudman introduces a finer sub-grid to transport the volum of fluid.In our paper, we present a way to adopt Rudman's approach without this subgrid, but always in a stagerred grid. The method is presented along with validation test cases and example applications, including very demanding momentum-dominated 3D simulations.

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Section: The Sheared Liquid Sheetsupporting

confidence: 69%

“…Because our solver is a coupled levelset/VOF [25,3] on a staggered grid, the Rudman approach seems to be the best approch to ensure consistency between mass and momentum transport [35]. Nevertheless, the finer grid increases the computational cost of our CLSVOF method motivating the development of a single grid approach.…”

Section: Introductionmentioning

confidence: 99%

A consistent mass and momentum flux computation method for two phase flows. Application to atomization process

et al. 2017

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“…Generally, they can be captured by either numerical simulation method or visualization experimental method. Some researchers attempt to investigate the interface structure by using Direct Numerical Simulation (Shinjo et al 2010(Shinjo et al , 2011aCousin et al 2012;Desjardins et al 2013;Mehravaran et al 2013;Behzad et al 2016) and Large Eddy Simulation (Xiao et al 2014(Xiao et al , 2016Tian et al 2015;Ghiji et al 2016). Based on the accurate boundary condition, the interface structure of liquid jet can be well reproduced by these methods.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Investigation on the Jet Interface Structure

Gong¹,

Yang²,

Jia³

2017

JAFM

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The well understanding of interface structure of liquid jet is the basis of the research of primary breakup. In this paper, the interface structure of liquid jet is captured by using a high-speed photography. The key parameters of interface structure, streamwise wavelength, spanwise wavelength and generation position, are measured based on a power spectral method. The results show that jet interface is featured by a group of periodic structures in the region near the nozzle exit. The position where periodic structure generated fluctuates in a certain region with the variation of time and spanwise position. The spanwise wavelength of these periodic structures is the function of nozzle diameter and the wavelength increase ratio of transition region. Along the streamwise direction, the streamwise wavelengths of these structures increase with a small ratio. With the Weber number increase, the streamwise wavelength is significantly decreased while the spanwise wavelength has no remarkable change. A Reynolds number that defined with streamwise distance, jet velocity and viscosity is proposed to estimate the onset of interface structure, and Reynolds number is equal to 42000 in this paper.

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“…However, these are too expensive for use as design tools at the present level of computational facilities available. Consequently, they are generally not used in comprehensive models with a very few exceptions like the very recent work of Cousin et al [156] who coupled RANS and LES simulations of internal hydrodynamics of the injector with DNS of primary break up. Since the focus of the present paper is on the development of comprehensive models that can be used as design tools, these detailed numerical simulations have not been discussed in detail.…”

Section: Detailed Numerical Simulationmentioning

confidence: 99%

Trends in Comprehensive Modeling of Spray Formation

Tharakan

Mukhopadhyay

Datta

et al. 2013

International Journal of Spray and Combustion Dynamics

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Comprehensive modeling of spray formation in liquid fuel injectors involves modeling of (i) internal hydrodynamics of fuel injector (ii) break up of liquid sheet leading to primary and secondary atomization and (iii) prediction of size and velocity distributions of droplets in the spray. Comprehensive models addressing all the three aspects are rare though some work has been reported that incorporate two of the three aspects. However, significant volume of literature exists on the individual modules. In the present work, progress and current trends in the individual modules have been extensively reviewed and their implications on development of comprehensive models have been discussed. The unresolved issues and future research directions are also indicated.

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Primary breakup simulation of a liquid jet discharged by a low-pressure compound nozzle

Cited by 12 publications

References 29 publications

A consistent mass and momentum flux computation method for two phase flows. Application to atomization process

A consistent mass and momentum flux computation method for two phase flows. Application to atomization process

Measurement and Investigation on the Jet Interface Structure

Trends in Comprehensive Modeling of Spray Formation

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