Title Aerodynamic and structural analysis of spoilers for passenger cars /
Translation of Title Spoilerių lengviesiems automobiliams aerodinaminiai ir struktūriniai tyrimai.
Authors Manimangalam Muralidaran, Dwaraganath
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Pages 61
Keywords [eng] front spoiler ; rear spoiler ; angle of attack ; flow simulation ; structural analysis
Abstract [eng] This thesis is about analysing the effect of aerodynamic features on the aerodynamics of the vehicle and to enhance the performance of the vehicle. Also, to analyse the strength of materials used for the construction of these features. The main intent of this study is to enhance the aerodynamic performance of the vehicle by using addon aerodynamic features such as front and rear spoilers. This process is enhanced by conducting aerodynamic efficiency trials on aerofoils, plate type profile and their angle of attack. The modelling for the study was done in SOLIDWORKS software, the aerodynamic efficiency of the spoilers and the car was analysed using SOLIDWORKS flow simulation. The last phase of this study is about the structural analysis of the spoilers using different materials to evaluate their rigidity and strength. This structural analysis was performed on SOLIDWORKS simulation. A comparative flow simulation study between aerofoils such as S9026, Clark Y, S1223 and a plate type profile was conducted in SOLIDWORKS flow simulation at different angle of attack from 0° to 20° at every 5°. Based on the results, S1223 aerofoil with 10° angle of attack was chosen and both front and rear spoilers were modelled accordingly. To estimate the effect of these features on a vehicle, flow simulation was conducted on Audi A7 with and without these aerodynamic features. With both the spoilers added on to the vehicle the downforce was increased by 12.8% and drag force was decreased by 1.1%. Structural analysis was then performed on these spoilers with the help of SOLIDWORKS simulation, two materials were used ABS plastic and carbon fibre with the forces obtained from the flow analysis. Worst case scenario was also studied on the spoilers with help of forces obtained from flow analysis of aerofoil at flow velocity 70 m/s. Considering the parameters such as spoiler’s strength and cost ABS plastic was chosen as the maximum stress did not exceed the allowable stress.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language English
Publication date 2020