Modeling the electrostatic charging of a helicopter during hovering in dusty atmosphere
| Autor: | Holger Grosshans, Robert-Zoltán Szász, Miltiadis Papalexandris |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
010504 meteorology & atmospheric sciences business.industry Turbulence Flow (psychology) Dust particles Aerospace Engineering Electrostatics 01 natural sciences 010305 fluids & plasmas Computer Science::Robotics Atmosphere 0103 physical sciences Particle Aerospace engineering business Aerospace Physics::Atmospheric and Oceanic Physics Triboelectric effect 0105 earth and related environmental sciences |
| Zdroj: | Aerospace Science and Technology. 64:31-38 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/j.ast.2017.01.014 |
| Popis: | A helicopter flying through an atmosphere containing particulates may accumulate high electrostatic charges which can challenge its operational safety. In this paper we elaborate and validate a triboelectric charging model to predict the electrification experienced by a helicopter while hovering in dusty air. We employed Large Eddy simulations to describe the turbulent structures inherent in the flow around the rotorcraft. The dust particles were tracked individually in a Lagrangian framework. A model accounting for the triboelectric charge transfer when a particle hits the helicopter was introduced. The results demonstrate the accuracy of the proposed approach and allow a detailed analysis of the location of the charge accumulation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect