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Influence of the helicopter configuration on its electrostatic charging

Grosshans, Holger LU ; Szász, Robert Zoltan LU and Papalexandris, Miltiadis V. (2017) 23rd AIAA Computational Fluid Dynamics Conference, 2017 In 23rd AIAA Computational Fluid Dynamics Conference, 2017
Abstract

A helicopter flying through an atmosphere containing particulates may accumulate high electrostatic charges which can challenge its operational safety. In this paper we report on the in uence of the helicopter configuration on its electrification. Our study is based on a recently developed numerical approach according to which the turbulent air flow around the rotorcraft is estimated via large eddy simulations while the particulate flow is computed via Lagrangian particle tracking. Also, this approach incorporates a model for the triboelectric charge transfer during particle-helicopter collisions that is brie y described herein. The configurations that we examined in our study include rotor systems of two different sizes equipped with... (More)

A helicopter flying through an atmosphere containing particulates may accumulate high electrostatic charges which can challenge its operational safety. In this paper we report on the in uence of the helicopter configuration on its electrification. Our study is based on a recently developed numerical approach according to which the turbulent air flow around the rotorcraft is estimated via large eddy simulations while the particulate flow is computed via Lagrangian particle tracking. Also, this approach incorporates a model for the triboelectric charge transfer during particle-helicopter collisions that is brie y described herein. The configurations that we examined in our study include rotor systems of two different sizes equipped with two, three or four blades. Our results reveal that a helicopter with fewer blades accumulates less electric current even though the charge on each individual blade is higher. Further, the location of the charge build-up on the rotor disk depends strongly on the number of blades. Also, according to our computations, a reduction of the rotor size leads to a reduction of its electrification, if all other parameters are kept constant.

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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
23rd AIAA Computational Fluid Dynamics Conference, 2017
publisher
American Institute of Aeronautics and Astronautics Inc. (AIAA)
conference name
23rd AIAA Computational Fluid Dynamics Conference, 2017
external identifiers
  • scopus:85023623615
ISBN
9781624105067
DOI
10.2514/6.2017-3617
language
English
LU publication?
yes
id
9777e740-ec0e-45e3-bf68-6e0a7e63c099
date added to LUP
2017-07-27 14:36:23
date last changed
2017-07-27 14:36:23
@inproceedings{9777e740-ec0e-45e3-bf68-6e0a7e63c099,
  abstract     = {<p>A helicopter flying through an atmosphere containing particulates may accumulate high electrostatic charges which can challenge its operational safety. In this paper we report on the in uence of the helicopter configuration on its electrification. Our study is based on a recently developed numerical approach according to which the turbulent air flow around the rotorcraft is estimated via large eddy simulations while the particulate flow is computed via Lagrangian particle tracking. Also, this approach incorporates a model for the triboelectric charge transfer during particle-helicopter collisions that is brie y described herein. The configurations that we examined in our study include rotor systems of two different sizes equipped with two, three or four blades. Our results reveal that a helicopter with fewer blades accumulates less electric current even though the charge on each individual blade is higher. Further, the location of the charge build-up on the rotor disk depends strongly on the number of blades. Also, according to our computations, a reduction of the rotor size leads to a reduction of its electrification, if all other parameters are kept constant.</p>},
  author       = {Grosshans, Holger and Szász, Robert Zoltan and Papalexandris, Miltiadis V.},
  booktitle    = {23rd AIAA Computational Fluid Dynamics Conference, 2017},
  isbn         = {9781624105067},
  language     = {eng},
  publisher    = {American Institute of Aeronautics and Astronautics Inc. (AIAA)},
  title        = {Influence of the helicopter configuration on its electrostatic charging},
  url          = {http://dx.doi.org/10.2514/6.2017-3617},
  year         = {2017},
}