2014
DOI: 10.1016/j.ijmultiphaseflow.2014.06.003
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Effect of turbulence model and inlet boundary condition on the Diesel spray behavior simulated by an Eulerian Spray Atomization (ESA) model

Abstract: Simulating liquid spray first and second atomization is not an easy task. Many models have been developed over the past years, but Eulerian ones have proved their better performance for the dense zone of the spray. In this work a new compressible Eulerian model is used to compute the internal flow together with the spray. Up to five two-equation turbulence models have been tested and its influence is remarkable in terms of spray behavior, but also greatly affects the mass flow rate and the momentum flux. At th… Show more

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Cited by 45 publications
(39 citation statements)
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References 30 publications
(77 reference statements)
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“…According to this result, the impact of fluctuations intensity was assessed in LES calculations. In this case a 3-percent turbulence intensity, which corresponds to the outlet condition of a k-ω SST RANS nozzle flow simulation [19], has been used. Figure 4 shows a noticeable effect on PMD results when modifying initial fluctuations level, which have not been observed in previous RANS calculations [29].…”
Section: Liquid Spray Dispersion: Projected Mass Density Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…According to this result, the impact of fluctuations intensity was assessed in LES calculations. In this case a 3-percent turbulence intensity, which corresponds to the outlet condition of a k-ω SST RANS nozzle flow simulation [19], has been used. Figure 4 shows a noticeable effect on PMD results when modifying initial fluctuations level, which have not been observed in previous RANS calculations [29].…”
Section: Liquid Spray Dispersion: Projected Mass Density Resultsmentioning
confidence: 99%
“…Those experiments provide unique data using x-ray radiography [1] and the recently developed ultra-small-angle x-ray scattering (USAXS) [17]. Previous works [4][18] [19] have shown liquid spray dispersion predictions compared to x-ray radiography data, and the noticeable effect of the turbulence model in those RANS based simulations. In this paper, a LES approach is also applied and its impact on spray dispersion is evaluated.…”
mentioning
confidence: 99%
“…The Eulerian Spray Atomization (ESA) is a homogeneous model built to simulate non-evaporative conditions so far [14]. When compared with other approaches to simulate nozzle flow with moving needle and also the spray behavior (for example the work of Anvari et al [15]), the main advantage of this model is that allows to simulate both domains seamlessly.…”
Section: Code Descriptionmentioning
confidence: 99%
“…Under this framework, the objective of this work is to employ an already existing Eulerian model, able to simulate nozzle flow and spray at the same time [14], to computationally address the effects of needle movement on the spray behavior. To do so, Spray A conditions of Engine Combustion Network (ECN) [16] are considered.…”
Section: Introductionmentioning
confidence: 99%
“…On one hand, this will help experimental researchers understand some consequences that the growing injection pressures will have on the engine performance. On the other hand, this database is especially valuable for modelers, since the inclusion of the variation of the fuel properties with temperature and pressure is becoming a standard in 1D and computational fluid dynamics calculations [16,17,18].…”
Section: Introductionmentioning
confidence: 99%