Open AccessMethods of analyzing isolated and ducted fixed-pitch propellers under non-axial inflow conditions
Author(s) -
M Černý,
Jan-Arun Faust,
C. Breitsamter
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1024/1/012034
Subject(s) - inflow , propeller , marine engineering , reynolds averaged navier–stokes equations , flow (mathematics) , envelope (radar) , advance ratio , propulsion , propulsor , open water , range (aeronautics) , mechanics , environmental science , computational fluid dynamics , aerospace engineering , engineering , physics , blade pitch , turbine , radar
Currently, a growing interest for the propulsion of unmanned aerial vehicles (UAVs) can be recognized. To adress this, small-scale fixed-pitched propellers are analyzed in this work, both in isolated and ducted configurations. Due to their flight envelope, UAVs are likely to operate at highly inclined inflow conditions and even under reversed inflow, having a major influence on the flow field around a propeller. In order to investigate this influence, all analyses are performed at a range of inflow angles from α disc = 0° to 180° relative to the propeller axis. This paper employs different numerical techniques and compares them regarding their capability of showing the influence of non-axial inflow on propeller configurations. Wind tunnel experiments are performed measuring the forces and visualizing the flow field with PIV as well as steady and unsteady RANS simulations are applied to study details of the flow field.