Vibration prediction in combustion chambers by coupling finite elements and large eddy simulations

Huls, R.A.; Sengissen, Alois; Hoogt, P.J.M. van der; Kok, Jacobus B.W.; Poinsot, Thiérry; Boer, A. de

doi:10.1016/j.jsv.2007.02.027

Cited by 17 publications

(13 citation statements)

References 12 publications

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“…Large Eddy Simulation (LES) have been used extensively in the field of turbulent combustion to predict the mean flow fields [34,120,121] in turbulent flames. They have been also utilized in the investigations of combustion instabilities and combustion noise in swirled combustors [122][123][124]. The LES methodology can be applied in either fully compressible or low Mach number tools for reacting flows coupled to computational aeroacoustics (CAA) approaches for the propagation of acoustic waves [52,125].…”

Section: Conclusion Open Questions and Future Researchmentioning

confidence: 99%

Combustion noise

Dowling

Mahmoudi

2015

Proceedings of the Combustion Institute

273

192

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Section: Conclusion Open Questions and Future Researchmentioning

confidence: 99%

Combustion noise

Dowling

Mahmoudi

2015

Proceedings of the Combustion Institute

273

192

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“…Poursaeidi et al (2013) Investigation of choking and combustion products' swirling frequency effects on gas turbine compressor blade fractures. Huls et al (2007) It studied how to decrease NOx emissions from combustion systems, the higher sensitivity to combustion instabilities, leading to increased sound pressure levels in the combustor and resulting in an increased excitation of the surrounding structure the liner and this leads to fatigue, which reduces the life time of the combustor. Elbaloshi et al (2014) have made a comparison three k-ε family turbulence models and k-ɷ family models.…”

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confidence: 99%

Investigation Cold Flow of Can Combustor under Vibration Effect

Dahham¹

2017

IJRASET

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This paper focus on studying the behavior of velocity profile under force vibration for a different frequency (34, 48, 65 and 80 Hz) for lower annulus of Can Combustor. An experimental rig was designed at Babylon University /Iraq by the author. The Can Combustor tested in this study is real part collected from Al-Khairat/Iraq gas turbine power station. The velocity profiles are examined at three positions in the annular for lower region. The velocity in X-direction calculating with a different frequency for lower annulus. The results were shown that the increase of frequency lead to increase the velocity profile and large recirculation zone will form in some points. Since the flow is turbulent, So the slope of the velocity profile at the wall is big but when forced vibration effect is applied it becomes much greater than without vibration effect about (25%).Reynolds number increasing with praise of velocity in X-direction. Also, the increase in vibration level produces non-uniform velocity profile which affects the spreading of cooling efficiency. Finally the shape of velocity profile change from flatter to non-uniform shape due to fluctuation vibration effect so, the cooling film air fails to protect the linear wall of Combustor from damage.

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“…In 1970s largeeddy simulation was used to solve hydraulic problems, it was improved by most researchers in 1980s and they put their attention to large-eddy simulation once more from the beginning of 1990s. From combustion to the flow around a circular cylinder till the phenomenon of vortex motion, large-eddy simulation is of irreplaceable functions and commonly used in projects [4].…”

Section: Introductionmentioning

confidence: 99%

Application of Large Eddy Simulation in the process of the Multi-Physics Field Coupling in a Combustion Chamber

Wang

Long

et al. 2015

MATEC Web of Conferences

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Abstract. Numerical simulation is the main method to solve turbulence problems. As one of the three methods which are commonly used in large-eddy simulation model (LES) is the most effective and promising research method. The basic idea of large-eddy simulation is that the large scale turbulent motion is directly simulated and we use the subgrid scale model to simulate small-scale turbulent motion. Continuing alternative load exists in aero-engine combustion chamber during operation. This coupling phenomenon is an important reason to the combustion chamber fatigue failure. In this paper, the large-eddy simulation methods are described and applied in researching aero-engine combustion chamber multi-physics field coupling analysis. By comparing with the experimental results we verify the feasibility of this method and there is great significance of actual project.

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Vibration prediction in combustion chambers by coupling finite elements and large eddy simulations

Cited by 17 publications

References 12 publications

Combustion noise

Combustion noise

Investigation Cold Flow of Can Combustor under Vibration Effect

Application of Large Eddy Simulation in the process of the Multi-Physics Field Coupling in a Combustion Chamber

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