Shape Preserving In Aerodynamic Product Profiles Using Geometric Design Modelling

• Main Author: Md Nor Hayati, Norilani
• Format: Thesis
• Language: English; English
• Published: 2020
• Subjects: T Technology (General); TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utem.edu.my/id/eprint/25360/1/Shape%20preserving%20in%20aerodynamic%20product%20profiles%20using%20geometric%20design%20modelling.pdf; http://eprints.utem.edu.my/id/eprint/25360/2/Shape%20preserving%20in%20aerodynamic%20product%20profiles%20using%20geometric%20design%20modelling.pdf; http://eprints.utem.edu.my/id/eprint/25360/; https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=119158

Shinkansen bullet train was inspired by Kingfisher beak which the nose shape design of the bullet train is streamlined, and influenced the aerodynamic consumption. Long nose shape design lead to high production cost, material usage and longer building time. Therefore, the high-profile curve design which Bezier curve was applied to improve the nose shape design of Shinkansen bullet train while preserving the other specifications of Shinkansen bullet train. Cshaped transition curves was chosen to solve this problem due to its extreme curvature that able to exhibit smooth curvature. C-shaped transition curve was used to construct an improved design by applying it at the nose shape of Shinkansen. SolidWorks SimulationXpress and ANSYS Fluid Flow (FLUENT) packages are the software used to conduct linear static analysis and dynamic analysis respectively. The improved design was compared to the existing design of Shinkansen in the analysis. As a result, design with high-profile curve application shows better result in terms of Von Mises stress, displacement, velocity, and pressure. These results are been validated by using coefficient of variation and design efficiency to identify its reliability of design. Based on the linear static analysis, Von Mises stress and displacement results showed the improved design had less value compared to the existing design. This also depicted that the improved design took a longer time to undergo the failure mode. Meanwhile, in dynamic analysis, the velocity and pressure were the output parameters. The results were justified by colour indicators. Thus, the results also fulfilled the Bernoulli principle. Undoubtedly, improved design shows better result compared to existing design.