Flow physics and chine control of the water spray generated by an aircraft rigid tire rolling on contaminated runways
| Autor: | Peiqing Liu, Kaibin Zhao, Tianxiang Hu, Pingchang Ma, Qiulin Qu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
020301 aerospace & aeronautics Engineering business.industry Flow (psychology) Front (oceanography) Aerospace Engineering 02 engineering and technology Structural engineering Mechanics 01 natural sciences 010305 fluids & plasmas Spray nozzle Chine Smoothed-particle hydrodynamics 0203 mechanical engineering Drag 0103 physical sciences Runway business Water spray |
| Zdroj: | Aerospace Science and Technology. 72:49-62 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/j.ast.2017.10.036 |
| Popis: | During the take-off and landing of aircrafts from/on water-contaminated runways, the tire-generated water spray can endanger flight safety, such as engine spray ingestion and spray impingement drag. In this paper, the flow physics and chine control of the spray generated by an aircraft rigid tire are studied by the Smoothed Particle Hydrodynamics (SPH) method. The SPH method is validated by a NASA experiment. The forming and developing progresses of the front and side sprays are described in detail. It is found that the parabolic stripe of initial ejected particles at a given time is the boundary between the spray source region and the non-disturbed region in water film, and the stripes at any time are similar. The effects of tire speed and water film depth on spray angles are evaluated. The chines can effectively control the spray angles by reducing the vertical velocity component of the ejected particles and increasing the lateral component. The arc chines are more effective in controlling the spray than the linear chines. |
| Databáze: | OpenAIRE |
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