Large-eddy simulation of supercritical fluid injection

Petit, Xavier; Ribert, Guillaume; Lartigue, Ghislain; Domingo, Pascale

doi:10.1016/j.supflu.2013.09.011

Cited by 87 publications

(29 citation statements)

References 47 publications

(78 reference statements)

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“…It also becomes obvious that the results obtained with ALDM show more fine-scale turbulent structures, which was expected due to the more dissipative nature of the Smagorinsky SGS turbulence model. When compared to flow visualizations of Petit et al, 8 who used a grid with about 12.5 million cells and thus a much higher resolution than in our two setups, the main features of our results obtained with both codes are still very similar. Figure 3 shows the mean density along the centerline in x-direction for different SGS models and different EOS for all our simulations.…”

Section: Resultssupporting

confidence: 64%

“…[3][4][5] However, the injection and mixing process in a rocket combustion chamber is turbulent, not transitional. Therefore, we now use the data of fully turbulent, trans-and supercritical nitrogen jet experiments performed by Mayer et al 6 to further validate our methodology and to compare our results with previous simulations of Schmitt et al 7 and Petit et al 8 The setup of the experiments, where cold nitrogen at a temperature near the critical temperature is injected into nitrogen at supercritical temperature and pressure, resembles the situation in a real rocket combustion chamber in terms of injection and mixing processes.…”

Section: Introductionmentioning

confidence: 77%

“…Additionally we show data for cases 3 and 4 from previous simulations of other groups. 7,8 The results for cases 3 and 4 show that the choice of the EOS is decisive for the prediction of the density. While the PR EOS without VC predicts the highest density at the inlet, the Soave-RedlichKwong (SRK) EOS predicts the lowest values and the PR EOS with VC lies in between and matches the experimental data best.…”

Section: Resultsmentioning

confidence: 97%

“…Furthermore, we compare our results for the mean density along the centerline in streamwise direction with results from literature. 7,8 A. Flow Visualizations Figures 1 and 2 show the velocity magnitude and the temperature for all cases in the central x-y-cutplane.…”

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Large-Eddy Simulation of Turbulent Trans- and Supercritical Mixing

Niedermeier

Müller

Jarczyk

et al. 2013

21st AIAA Computational Fluid Dynamics Conference

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In a joint effort towards the development of robust numerical tools for Large-Eddy Simulations (LES) of the injection, mixing and combustion process in the high-pressure environments of liquid-propellant rocket engines, a consistent model of real-gas thermophysical effects has been developed and implemented into two different CFD codes: INCA with a density-based approach and a pressure-based version of OpenFOAM. As part of the validation process, LES of trans-and supercritical nitrogen jets have been performed with different subgrid-scale modeling approaches. Despite the different code architecture and turbulence models, the numerical results are in excellent agreement with each other and with experimental reference data. Compared to experimental data, our results have the same or better quality as those from previous simulations.

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Section: Resultssupporting

confidence: 64%

Section: Introductionmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Large-Eddy Simulation of Turbulent Trans- and Supercritical Mixing

Niedermeier

Müller

Jarczyk

et al. 2013

21st AIAA Computational Fluid Dynamics Conference

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“…Their results show that the high density gradient at the jet surface damps velocity fluctuations and thus delays the jet disintegration compared to injection at lower pressures. The same configuration was later investigated by other groups 6,7,8,9 using the cubic Peng-Robinson (PR) EoS. 10 The choice of the thermodynamic modelling, the EoS in particular, had a significant influence on the results in these studies.…”

Section: Introductionmentioning

confidence: 99%

Large-Eddy Simulation of Coaxial LN2/GH2 Injection at Trans- and Supercritical Conditions

Müller

Pfitzner

Matheis

et al. 2015

53rd AIAA Aerospace Sciences Meeting

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The coaxial injection of liquid nitrogen (LN2) and preheated hydrogen (GH2) at supercritical pressures is studied using Large-Eddy Simulation (LES). The focus of the present work lies on the evaluation of real-gas thermodynamics models for binary mixtures at conditions that are similar to that in LOx/GH2 liquid rocket combustors. A novel volumetranslation method on the basis of the cubic Peng-Robinson equation of state is introduced for the use in multi-species LES and is tested for both trans-and supercritical injection conditions. The new method corrects the deficiencies of the Peng-Robinson equation of state in the transcritical regime at minimal extra computational cost. A comparison with available experimental data is encouraging.

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Modeling and Simulation of a Turbulent Multi-component Two-phase Flow Involving Phase Change Processes Under Supercritical Conditions

Kuetemeier

Sadiki

2022

Fluid Mechanics and Its Applications

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The present paper aims at developing a generally valid, consistent numerical description of a turbulent multi-component two-phase flow that experiences processes that may occur under both subcritical and trans-critical or supercritical operating conditions. Within an appropriate LES methodology, focus is put on an Euler-Eulerian method that includes multi-component mixture properties along with phase change process. Thereby, the two-phase flow fluid is considered as multi-component mixtures in which the real fluid properties are accounted for by a composite Peng-Robinson (PR) equation of state (EoS), so that each phase is governed by its own PR EoS. The suggested numerical modelling approach is validated while simulating the disintegration of an elliptic jet of supercritical fluoroketone injected into a helium environment. Qualitative and quantitative analyses are carried out. The results show significant coupled effect of the turbulence and the thermodynamic on the jet disintegration along with the mixing processes. Especially, comparisons between the numerical predictions and available experimental data provided in terms of penetration length, fluoroketone density, and jet spreading angle outline good agreements that attest the performance of the proposed model at elevated pressures and temperatures. Further aspects of transcritical jet flow case as well as comparison with an Eulerian-Lagrangian approach which is extended to integrate the arising effects of vanishing surface tension in evolving sprays are left for future work.

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Large-eddy simulation of supercritical fluid injection

Cited by 87 publications

References 47 publications

Large-Eddy Simulation of Turbulent Trans- and Supercritical Mixing

Large-Eddy Simulation of Turbulent Trans- and Supercritical Mixing

Large-Eddy Simulation of Coaxial LN2/GH2 Injection at Trans- and Supercritical Conditions

Modeling and Simulation of a Turbulent Multi-component Two-phase Flow Involving Phase Change Processes Under Supercritical Conditions

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