| Téléchargement | - Voir la version finale : Preliminary investigation of the impact of precipitation on the aerodynamics of road vehicles (PDF, 1.0 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.4224/40002955 |
|---|
| Auteur | Rechercher : Raeesi, Arash1; Rechercher : McAuliffe, Brian R.1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Aérospatiale
|
|---|
| Format | Texte, Rapport technique |
|---|
| Description physique | 44 p. |
|---|
| Résumé | Road vehicles in the real world experience aerodynamic conditions that are often omitted in wind-tunnel or numerical simulations. Precipitation can potentially have an impact on the aerodynamics of road vehicles. This report is a first step towards gathering the knowledge required for developing methodologies to assess the aerodynamics of road vehicles under precipitation conditions. A majority of the available literature has been dedicated to aviation applications, with little work done on how precipitation influences aerodynamic performance. A review of experimental and numerical approaches to assess precipitation impacts to the aerodynamic performance of aircraft has provided an essential foundation for assessment of road vehicles since the mechanisms of interaction are presumed to be similar. For aircraft wings, rain can impact the aerodynamics by three different mechanisms: the exchange of momentum between rain droplets impacting the surface of the wing; momentum loss and subsequent deceleration of the boundary-layer flow due to acceleration of rain particles and splash-back of particles; and added surface roughness due to uneven distribution of a thin water film forming on the surface. It is expected that these three mechanisms are all present in the case of a road vehicle, but their relative magnitudes are likely different. Recommendations are provided for assessing rain-induced drag of road vehicles using both experimental and numerical techniques. |
|---|
| Date de publication | 2020-07-28 |
|---|
| Maison d’édition | National Research Council of Canada. Aerospace |
|---|
| Série | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Non |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 96b636f4-be79-4e33-9268-6682967f54e8 |
|---|
| Enregistrement créé | 2022-11-08 |
|---|
| Enregistrement modifié | 2022-11-08 |
|---|
