Summary of the 5<sup>th</sup>Propulsion Aerodynamics Workshop: Inlet Cross-Flow Results

Babcock, Deric; Neto, Luiz Tobaldini; Davis, Zach; Karman-Shoemake, Kristen; Woeber, Carolyn; Bajimaya, Raul; MacManus, David G.

doi:10.2514/6.2022-0814

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…In this study, we consider the results from a simplified aspirated intake geometry in ground proximity, which has recently been used to validate CFD codes [12]. The intake is subjected to crosswinds and a range of flow topologies are observed at the Aerodynamic Interface Plane(AIP).…”

Section: Introductionmentioning

confidence: 99%

Towards Real-Time CFD

Rao,

Stapelfeldt,

Duncan

et al. 2023

15th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control

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Quick turnaround times in the design stages of the aerospace industry require faster and more accurate predictions of the flow fields, especially in turbomachinery applications. Recent advances in machine learning combined with the increased computational resources available, data-driven approaches are replacing or aiding expensive computational fluid dynamics (CFD) simulations. Here, an unsteady flowfield from an aspirated intake subjected to a crosswind is used to delineate the flow features using image segmentation, where a convolutional neural network (CNN) is used. Preliminary results from the comparison of two CNN architectures are compared to identify regions of intake distortions such as the ground vortex or a lip separation. Future work will be focussed on using these architectures to predict CFD flow topologies, which will allow the rapid assessment of geometric changes at the design stage, and substantially improve the overall time required in the performance evaluation of turbomachinery components.

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Section: Introductionmentioning

confidence: 99%

Towards Real-Time CFD

Rao,

Stapelfeldt,

Duncan

et al. 2023

15th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control

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Coupled Fan-Intake Dynamic Distortion Characterization at Crosswind Conditions

Piovesan,

Zachos,

MacManus

et al. 2024

AIAA Journal

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Lessons Learnt from the Simulations of Aero-Engine Ground Vortex

Zhang,

Yang,

Shen

et al. 2024

Aerospace

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With the startup of the aero-engine, the ground vortex is formed between the ground and the engine intake. The ground vortex leads to total pressure and swirl distortion, which reduces the performance of the engine. The inhalation of the dust and debris through a ground vortex can erode the fan blade, block the seals and degrade turbine cooling performance. As the diameter of the modern fan blade becomes larger, the clearance between the intake lip and the ground surface is smaller, which enhances the strength of the ground vortex. Though considerable numerical studies have been conducted with the predictions of the ground vortex, it is noted that the accurate simulation of the ground vortex is still a tough task. This paper presents authors’ simulation work of the ground vortex into an intake model with different crosswind speeds. This paper tackles the challenge with a parametric study to provide useful guidelines on how to obtain a good match with the experimental data. The influence of the mesh density, performance of different turbulence models and how the boundary layer thickness affects the prediction results are conducted and analysed. The detailed structure of the flow field with ground vortex is presented, which can shed light on the experimental observations. A number of suggestions are presented that can pave the road to the accurate flow field simulations with strong vorticities.

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Summary of the 5^thPropulsion Aerodynamics Workshop: Inlet Cross-Flow Results

Cited by 3 publications

References 9 publications

Towards Real-Time CFD

Towards Real-Time CFD

Coupled Fan-Intake Dynamic Distortion Characterization at Crosswind Conditions

Lessons Learnt from the Simulations of Aero-Engine Ground Vortex

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Summary of the 5thPropulsion Aerodynamics Workshop: Inlet Cross-Flow Results

Cited by 3 publications

References 9 publications

Towards Real-Time CFD

Towards Real-Time CFD

Coupled Fan-Intake Dynamic Distortion Characterization at Crosswind Conditions

Lessons Learnt from the Simulations of Aero-Engine Ground Vortex

Contact Info

Product

Resources

About

Summary of the 5^thPropulsion Aerodynamics Workshop: Inlet Cross-Flow Results