Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Underbody"”.
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Design and analysis of an active underbody aerodynamic device for tractor trailers
… trucks is for overcoming aerodynamic drag. The underbody region of a tractor-trailer is responsible for up to 30 % of the aerodynamic drag on tractor-trailers, which is the highest drag created by any region on the vehicle. In this study, a novel concept of an active underbody drag reduction …
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An Experimental Investigation of Underbody and Near Wake Aerodynamics of Heavy Goods Vehicles
… the significantly less well documented trailer underbody. Moreover, the underbody flow influences the topology of the near wake, which is also responsible for substantial drag generation. However, the underlying mechanisms of these interactions, and thus the role of the underbody flow in the …
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Development and application of an integrated aerodynamic and thermodynamic testing system for cars
… The temperature study revealed that the underbody cooling was jeopardized by a rear underbody diffuser.
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Aerodynamic and thermal analysis of a heat source at the underside of a passenger vehicle
… the effects of cross-winds on the automotive underbody aero-thermal phenomena using a 2005 Chevrolet Aveo5 with a heat source affixed to it to create a baseline. The results show that irrespective of the yaw angle used, only temperatures in the vicinity of the heat source increased. The rear …
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Thermal network model development for an extended range electric vehicle battery pack with experimental verification through dynamic environmental exposure
… engine bay temperature, chassis temperature, underbody convection, and road radiation. This full thermal model was verified using road test data, and reproduced temperature and heat flow with accuracy comparable to the lab test runs. The final thermal network can be employed to perform a …
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Investigation of the Under-Body Flow Field of a Prototype Long-Range Electric Vehicle
… the resultant forces and the separation on the underbody was largely unchanged. The diffuser was extended by 12.7 cm without modifying the aspect ratio, to lower the divergence angle. The pressure and shear drag reduced by 8 N and 1.1 N, respectively, and downforce decreased by 80 N, but …
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A Solution for Commodity Field Hauling with Self-Unloading Semi-Trailers
… act as large vertebra, which results in a rigid underbody that maintains flexibility and strength. Special consideration was taken while creating this design to account for dynamic loading on soft muddy soils or uneven surfaces while still maintaining the desired lightweight trailer …
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Sex-Based Differences in Calcaneal Injury Tolerances Under High-Rate Loading
… in models representing injuries typical in underbody blast environments. Seventeen (17) right legs were harvested at the knee from cadavers representing three anthropometries: 50th percentile male (6), 75th percentile female (6), and 5th percentile female (5). Care was taken to preserve …
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Mechanical and Physical Properties in Additive Friction Stir Deposited Aluminum
… large-scale additive manufacturing of jointless underbody hulls for the Army Ground Vehicle Systems by 1) generating an improved mechanical and metallurgical database and 2) understanding the Additive Friction Stir Deposition (AFSD) process. AFSD is a solid-state additive manufacturing process …
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Model testing and computational analysis of a high speed planing hull with cambered planing surface and surface piercing hydrofoils
… ventilated. To accommodate this effect, the aft underbody design departed from the conventional dead-rise. Directional stability of the model in the pre-planing regime was increased by incorporating three vertices at the design dead-rise angle. A set of super-cavitating, surface-piercing …