Investigation of Vehicle Ride Height and Diffuser Ramp Angle on Downforce and Efficiency

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU127742" target="_blank" >RIV/00216305:26210/18:PU127742 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1177%2F0954407018776767" target="_blank" >https://doi.org/10.1177%2F0954407018776767</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0954407018776767" target="_blank" >10.1177/0954407018776767</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of Vehicle Ride Height and Diffuser Ramp Angle on Downforce and Efficiency

Popis výsledku v původním jazyce

Diffusers are typically used in motorsport to generate negative lift (downforce). They also reduce aerodynamic drag and so significantly enhance aerodynamic efficiency. The amount of downforce generated is dependent on ride height, diffuser ramp angle and its relative length to that of the vehicle length. This paper details a numerical investigation of the effects of ride height and diffuser ramp angle in order to find an optimum downforce and efficiency for the inverted Ahmed model. A short and long diffuser with ratios of 10% and 35% respectively to that of vehicle length are studied. The short diffuser produced lower maximum downforce and efficiency at a lower ride height and lower angle when compared to the longer diffuser. The long diffuser produced highest downforce and the best efficiency with a ramp angle of 25 degrees at ride height ratio of 3.8% when compared to vehicle length. Different ride heights were found to correspond to different diffuser ramp angles to achieve optimum downforce and efficiencies.

Název v anglickém jazyce

Investigation of Vehicle Ride Height and Diffuser Ramp Angle on Downforce and Efficiency

Popis výsledku anglicky

Diffusers are typically used in motorsport to generate negative lift (downforce). They also reduce aerodynamic drag and so significantly enhance aerodynamic efficiency. The amount of downforce generated is dependent on ride height, diffuser ramp angle and its relative length to that of the vehicle length. This paper details a numerical investigation of the effects of ride height and diffuser ramp angle in order to find an optimum downforce and efficiency for the inverted Ahmed model. A short and long diffuser with ratios of 10% and 35% respectively to that of vehicle length are studied. The short diffuser produced lower maximum downforce and efficiency at a lower ride height and lower angle when compared to the longer diffuser. The long diffuser produced highest downforce and the best efficiency with a ramp angle of 25 degrees at ride height ratio of 3.8% when compared to vehicle length. Different ride heights were found to correspond to different diffuser ramp angles to achieve optimum downforce and efficiencies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING

ISSN

0954-4070

e-ISSN

2041-2991

Svazek periodika

233

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

2139-2145

Kód UT WoS článku

000474808900012

EID výsledku v databázi Scopus

2-s2.0-85047665931