Development and assessment of a coupled strategy for conjugate heat transfer with Large Eddy Simulation: Application to a cooled turbine blade

Duchaine, Florent; Corpron, Alban; Pons, Lorenzo; Moureau, Vincent; Nicoud, Franck; Poinsot, Thiérry

doi:10.1016/j.ijheatfluidflow.2009.07.004

Cited by 115 publications

(90 citation statements)

References 63 publications

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“…Interested readers are pointed to the homogenization techniques for multi-perforated walls [321e323], Euler/Euler [324e328] and Euler/Lagrange [329,330] formalisms for two-phase flows as well as on-going developments in the field of primary and secondary atomization [331]. In parallel and to improve the prediction of the thermal environment of such devices, recent contributions address multi-physics type of solutions where wall heat transfer [332,333] and/or radiation [334] are coupled to LES.…”

Section: Specific Features and Missing Linksmentioning

confidence: 99%

Large Eddy Simulations of gaseous flames in gas turbine combustion chambers

Gicquel

Staffelbach

Poinsot

2012

Progress in Energy and Combustion Science

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407

183

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Section: Specific Features and Missing Linksmentioning

confidence: 99%

Large Eddy Simulations of gaseous flames in gas turbine combustion chambers

Gicquel

Staffelbach

Poinsot

2012

Progress in Energy and Combustion Science

Self Cite

407

183

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“…The simulation of heat transfer in the solid combustor parts is performed with the AVTP code [51,52] , which solves the time dependent energy equation:…”

Section: Solid Heat Conduction Solver Avtp and Coupling Strategymentioning

confidence: 99%

Coupling heat transfer and large eddy simulation for combustion instability prediction in a swirl burner

Kraus

Selle

Poinsot

2018

Combustion and Flame

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. Large eddy simulations (LES) of combustion instabilities are often performed with simplified thermal wall boundary conditions, typically adiabatic walls. However, wall temperatures directly affect the gas temperatures and therefore the sound speed field. They also control the flame itself, its stabilization characteristics and its response to acoustic waves, changing the flame transfer functions (FTFs) of many combustion chambers. This paper presents an example of LES of turbulent flames fully coupled to a heat conduction solver providing the temperature in the combustor walls. LES results obtained with the fully coupled approach are compared to experimental data and to LES performed with adiabatic walls for a swirled turbulent methane/air burner installed at Engler-Bunte-Institute, Karlsruhe Institute of Technology and German Aerospace Center (DLR) in Stuttgart. Results show that the fully coupled approach provides reasonable wall temperature estimations and that heat conduction in the combustor walls strongly affects both the mean state and the unstable modes of the combustor. The unstable thermoacoustic mode observed experimentally at 750 Hz is captured accurately by the coupled simulation but not by the adiabatic one, suggesting that coupling LES with heat conduction solvers within combustor walls may be necessary in other configurations in order to capture flame dynamics.

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“…Thermal efficiency improvement is crucial but limited by the thermal resilience of nozzle guide vanes used in gas turbines (Lefebvre 1999;Facchini et al 2004;Duchaine et al 2009;Berger et al 2016). Moreover, the compactness of future systems is likely to enhance material stresses (Dreizler and Bohm 2015).…”

Section: Introductionmentioning

confidence: 99%

Phosphor thermometry on a rotating flame holder for combustion applications

et al. 2018

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. AbstractThis study presents a method to measure wall temperatures of a rotating flame holder, which could be used as a combustion control device. Laser-induced phosphorescence is found to be a reliable technique to gather such experimental data. The paper first investigates how the coating (thickness, emissivity and lifetime) influence the flame stabilization. While the low thermal conductivity of the coating is estimated to induce a temperature difference of only 0.08-0.4 K, the emissivity increases by 40% . Nevertheless, the transient and steady-state flame locations are not affected. Second, because temperature measurements on the rotating cylinder are likely to fail due the long phosphor lifetimes, we modify the classical point-wise arrangement. We propose to illuminate a larger area, and to correct the signal with a distortion function that accounts for the displacement of the target. An analytical distortion function is derived and compared to measured ones. It shows that the range of measurements is limited by the signal extinction and the rapid distortion function decay. A diagram summarizes the range of operating conditions where measurements are valid. Finally, these experimental data are used to validate direct numerical simulations. Cylinder temperature variations within the precision of these measurements are shown not to influence the flame location, but larger deviations highlight different trends for the two asymmetric flame branches.

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Development and assessment of a coupled strategy for conjugate heat transfer with Large Eddy Simulation: Application to a cooled turbine blade

Cited by 115 publications

References 63 publications

Large Eddy Simulations of gaseous flames in gas turbine combustion chambers

Large Eddy Simulations of gaseous flames in gas turbine combustion chambers

Coupling heat transfer and large eddy simulation for combustion instability prediction in a swirl burner

Phosphor thermometry on a rotating flame holder for combustion applications

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