Aerodynamic Interaction Effects Between a Propeller Slipstream and Flap Boundary Layer

A numerical study

Master thesis (2023)

Authors

J.C. Plijter Aerospace Engineering

Contributors

T. Sinnige Flight Performance and Propulsion - Aerospace Engineering (supervisor 1)
R.R. Duivenvoorden Flight Performance and Propulsion - Aerospace Engineering (supervisor 1)
Faculty
Aerospace Engineering
Copyright: © 2023 Jurrien Plijter
CFD High-lift device URANS Propeller Aerodynamics ANSYS Fluent
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Published Date

22-12-2023

Language

English

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Faculty

Aerospace Engineering

Abstract

This thesis investigates the aerodynamics of a propeller-wing-flap system, spurred by the growing interest in propeller-driven aircraft and the potential introduction of distributed electric propulsion. The research focuses on the complex flowfield involving the interaction of the propeller slipstream with the main wing and flap at high-lift conditions. Using unsteady RANS simulations at a chord based Reynolds number of 2 million, the study explores the impact of a propeller slipstream on flap time-dependent boundary layer variations. The computational results are validated against experimental data, showing good agreement. The analysis reveals intricate details of the flow field, including propeller slipstream shifts and complex vortex systems contributing to flap stall mechanics. The study highlights the influence of these phenomena on the spanwise lift distribution and flap flow separation areas. The findings contribute valuable insights into the understanding of propeller-wing-flap interactions, yet emphasizing the need for further research to confirm and expand upon the current discoveries.