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Projecte llegit

Títol: Numerical Study on Aerodynamic Drag Reduction of Passenger Cars

Estudiants que han llegit aquest projecte:

Director/a: MELLIBOVSKY ELSTEIN, FERNANDO PABLO

Departament: FIS

Títol: Numerical Study on Aerodynamic Drag Reduction of Passenger Cars

Data inici oferta: 31-07-2015     Data finalització oferta: 31-03-2016


Estudis d'assignació del projecte:
    Tipus: Individual
     
    Lloc de realització: EETAC
     
    Paraules clau:
    Automotive, Aerodynamics, Ahmed Body, CFD, Difuser, rear bumper, Rear Spoiler, Vortex Generators, by-pass, double roof
     
    Descripció del contingut i pla d'activitats:
    The scope of this work is to identify potential improvements on
    Passenger cars Aerodynimcs (Drag reduction and Downforce
    increase) to help to minimize fuel consumption and hence reduce
    exhaust emisions. The Ahmed body (Bluff body) is representative
    of a passenger car under aerodynamical point of view. A lot of
    studies and literature exists as far as test reports of the Ahmed
    body on wind tunel tests.
    This work can be divided onto 2 steps. First step is to perform
    qualitative numerical simulations of a 3D model of an Ahmed body
    modified with different aerodynimc improvements such as difuser
    integration downstream on the underbody of the vehicle (studying
    different configurations such as diferent lenghts, diferent
    angles and number an d location of vanes), study of aerodynamic
    modifications on the rear bumper to improve the weak low pressure
    region, study of by-pass ducts integration from the front glass
    to the rear glass, Rear Spoiler integration, vortex generators
    integration downstream over the roof and a new "double roof"
    concept. After evaluation of the perormance of such modifications
    on the Ahmed body, the second step of this work consists to
    implement a single modification or multiple moidifications on
    the geometry of a real passenger car and compare (as conclusion
    of this work) the CFD results of the passenger car quantitative
    simulations before and after the modifications were implemented.

     
    Overview (resum en anglès):

    The scope of this work is to identify potential improvements on
    Passenger cars Aerodynimcs (Drag reduction and Downforce
    increase) to help to minimize fuel consumption and hence reduce
    exhaust emisions. The Ahmed body (Bluff body) is representative
    of a passenger car under aerodynamical point of view. A lot of
    studies and literature exists as far as test reports of the Ahmed
    body on wind tunel tests.
    This work can be divided onto 2 steps. First step is to perform
    qualitative numerical simulations of a 3D model of an Ahmed body
    modified with different aerodynimc improvements such as difuser
    integration downstream on the underbody of the vehicle (studying
    different configurations such as diferent lenghts, diferent
    angles and number an d location of vanes), study of aerodynamic
    modifications on the rear bumper to improve the weak low pressure
    region, study of by-pass ducts integration from the front glass
    to the rear glass, Rear Spoiler integration, vortex generators
    integration downstream over the roof and a new "double roof"
    concept. After evaluation of the perormance of such modifications
    on the Ahmed body, the second step of this work consists to
    implement a single modification or multiple moidifications on
    the geometry of a real passenger car and compare (as conclusion
    of this work) the CFD results of the passenger car quantitative
    simulations before and after the modifications were implemented.

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