Summary of the 3<sup>rd</sup> Propulsion Aerodynamics Workshop: S-duct Results

Winkler, Chad; Davis, Zach

doi:10.2514/6.2017-4912

Cited by 10 publications

(1 citation statement)

References 9 publications

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“…As part of the 3 rd AIAA PAW, the predictive capability of a large number of solvers for an S-duct case was presented. A summary of these results was reported by Winkler and Davis in [16]. The portfolio of cases included a baseline S-duct configuration previously studied by McMillan et al [17] and a number of variations of it that included the presence of an AIP pressure probe rake or flow control vortex generators as part of the computational domain aiming to assess their impact on the flow field.…”

Section: Introductionmentioning

confidence: 99%

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Guerrero-Hurtado

Zachos

MacManus

et al. 2019

AIAA Propulsion and Energy 2019 Forum

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The unsteady flow fields generated by convoluted aero engine intakes are major sources of instabilities that can compromise the performance of the downstream turbomachinery components. This highlights the need for high spatial and temporal resolution measurements that will allow a greater understanding of the aerodynamics but also improvements in our current predictive capability for such complex flows. This paper presents the validation of a modern Lattice Boltzmann method (LBM) to predict the unsteady flow and swirl distortion characteristics within a representative S-duct intake. The numerical results are compared against high spatial and temporal resolution Particle Image Velocimetry (PIV) data for the same S-duct configuration at an inlet Mach number of 0.27. The work demonstrates that LBM is broadly able to capture the flow topologies and temporal characteristics with the exception of the magnitude of the unsteady fluctuations which were found to be notably under-predicted compared to the PIV data. Proper Orthogonal Decomposition analysis shows that LBM is able to provide the key flow modes and their spectral distributions which were found broadly in alignment with the PIV data. A statistical assessment of the unsteady distortion history highlights that LBM can also provide representative distributions of the main swirl distortion descriptors. Overall the work demonstrates that LBM shows promising potential for S-duct unsteady flow predictions which combined with the minimum computational grid requirements, robustness and fast convergence make it an attractive solution for wider use in the area of unsteady propulsion system aerodynamics.

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Section: Introductionmentioning

confidence: 99%

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Guerrero-Hurtado

Zachos

MacManus

et al. 2019

AIAA Propulsion and Energy 2019 Forum

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Numerical Investigations of S-Shaped Air Inlet for Embedded Engines

Lima

Huebner

Tobaldini

2019

Journal of Propulsion and Power

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Overview of Selected Serpentine Duct Simulations Using Computational Fluid Dynamics

Domel

2024

Journal of Propulsion and Power

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Computational fluid dynamics (CFD) was used to perform simulations of multiple serpentine inlet ducts for comparison to experimental data. The simulations included two baseline duct geometries configured to match their respective wind tunnel tests. Each configuration was tested and simulated with and without flow control vanes. Some of the simulations included the geometric detail of the instrumentation probes at the aerodynamic interface plane. This paper highlights selected issues that impact robustness and accuracy. The topics include far-field boundary conditions and various methods of modeling the instrumentation probes. This paper summarizes discussion topics and recommendations for CFD practitioners preparing to simulate similar cases.

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Summary of the 3^rd Propulsion Aerodynamics Workshop: S-duct Results

Cited by 10 publications

References 9 publications

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Numerical Investigations of S-Shaped Air Inlet for Embedded Engines

Overview of Selected Serpentine Duct Simulations Using Computational Fluid Dynamics

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Summary of the 3rd Propulsion Aerodynamics Workshop: S-duct Results

Cited by 10 publications

References 9 publications

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods

Numerical Investigations of S-Shaped Air Inlet for Embedded Engines

Overview of Selected Serpentine Duct Simulations Using Computational Fluid Dynamics

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Product

Resources

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Summary of the 3^rd Propulsion Aerodynamics Workshop: S-duct Results