On the importance of inlet boundary conditions for aerothermal predictions of turbine stages with large eddy simulation

Duchaine, Florent; Dombard, Jérôme; Gicquel, Laurent; Koupper, Charlie

doi:10.1016/j.compfluid.2017.05.024

Cited by 27 publications

(12 citation statements)

References 35 publications

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“…A 2D-map of P t , T t and flow direction is imposed at the inlet. More details about the FACTOR configuration may be found in Duchaine et al [12] .…”

Section: Turbomachinery Configurationmentioning

confidence: 99%

A characteristic inlet boundary condition for compressible, turbulent, multispecies turbomachinery flows

et al. 2019

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“…A 2D-map of P t , T t and flow direction is imposed at the inlet. More details about the FACTOR configuration may be found in Duchaine et al [12] .…”

Section: Turbomachinery Configurationmentioning

confidence: 99%

A characteristic inlet boundary condition for compressible, turbulent, multispecies turbomachinery flows

et al. 2019

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“…To our knowledge the most (geometrically) advanced high-fidelity simulations to date are wall-modelled LES of an integrated combustor simulator/HPT stage configuration [20,56]. By comparing the results from the full coupled simulations with those from a standalone stage with the same mean inflow conditions and varying inlet turbulence, the aerodynamic performance of the turbine stage was found to be almost insensitive to the inlet turbulent conditions.…”

Section: High-pressure Turbinementioning

confidence: 99%

The Current State of High-Fidelity Simulations for Main Gas Path Turbomachinery Components and Their Industrial Impact

Sandberg

Michelassi²

2019

Flow Turbulence Combust

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Over the past two decades high-fidelity simulations have become feasible for most main gas path turbomachinery components. This paper introduces the key challenges of simulating and modelling turbomachinery flows and presents an overview of possible simulation strategies. A comprehensive overview is given of which particular design challenges have to date been addressed by high-fidelity simulations, with a particular focus on high-pressure and centrifugal compressors, and high-pressure and low-pressure turbines. Recommendations are provided for how quality and accuracy can be ensured for high-fidelity simulations, using direct numerical simulations of a low-pressure turbine as a case study. It is argued that industrial impact from high-fidelity simulations can be achieved in two ways, either by conducting design-of-experiment-like studies that can provide designers with insight into certain physical mechanisms and phenomena, or by helping mature and improve lower-order models. The latter is discussed with particular emphasis on recent advances in machine learning for model assessment and improvement, and the potential of one selected data-driven approach is demonstrated on predictions of wake mixing for low-pressure and high-pressure turbines.

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“…Many studies consider only time-mean quantities, however Duchaine et al [26] showed by LES that using full timeresolved boundary conditions at the combustor-turbine interface is necessary for accurate predictions, compared with using a 2-D time-mean boundary condition.…”

Section: Introductionmentioning

confidence: 99%

Unsteady Phenomena at the Combustor-Turbine Interface

Shaikh¹,

Rosic²

2020

Proceedings of Global Power &Amp; Propulsion Society

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On the importance of inlet boundary conditions for aerothermal predictions of turbine stages with large eddy simulation

Cited by 27 publications

References 35 publications

A characteristic inlet boundary condition for compressible, turbulent, multispecies turbomachinery flows

A characteristic inlet boundary condition for compressible, turbulent, multispecies turbomachinery flows

The Current State of High-Fidelity Simulations for Main Gas Path Turbomachinery Components and Their Industrial Impact

Unsteady Phenomena at the Combustor-Turbine Interface

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