Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
https://orcid.org/http://orcid.org/0000-0003-1125-7330
The improvement of fuel efficiency in intercity/interstate buses is very much essential to enhance the performance of the buses. Various add-on devices are available in the market for this purpose. In this study, the effects of a passive flow control device and rear extension on the reduction of overall drag have been investigated. An actual bus model is designed and CFD analysis is performed on ANSYS Fluent using the k-omega model to find the drag generated by the bus. A boat tail is attached to the rear of the bus to reduce pressure drag. It considerably reduced the large recirculation zone in the wake at the rear end of the bus. Boat tail angles ranging from 12° to 20° and lengths varying from 150 to 2000 mm are analysed. Scaled-down models (1:20) of the bus were manufactured by 3D printing for experimental validation, and smoke tests were performed initially to check the streamlines around the base and modified models, Flow separation occurred between 15° and 18°. Boat tail of length 500 mm, inclined at an angle of 12°, was found to have the perfect balance between drag reduction and practicality. A total drag reduction of 18.64% is obtained on the optimized model.
Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
https://orcid.org/http://orcid.org/0000-0003-1125-7330
The improvement of fuel efficiency in intercity/interstate buses is very much essential to enhance the performance of the buses. Various add-on devices are available in the market for this purpose. In this study, the effects of a passive flow control device and rear extension on the reduction of overall drag have been investigated. An actual bus model is designed and CFD analysis is performed on ANSYS Fluent using the k-omega model to find the drag generated by the bus. A boat tail is attached to the rear of the bus to reduce pressure drag. It considerably reduced the large recirculation zone in the wake at the rear end of the bus. Boat tail angles ranging from 12° to 20° and lengths varying from 150 to 2000 mm are analysed. Scaled-down models (1:20) of the bus were manufactured by 3D printing for experimental validation, and smoke tests were performed initially to check the streamlines around the base and modified models, Flow separation occurred between 15° and 18°. Boat tail of length 500 mm, inclined at an angle of 12°, was found to have the perfect balance between drag reduction and practicality. A total drag reduction of 18.64% is obtained on the optimized model.
Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
https://orcid.org/http://orcid.org/0000-0003-1125-7330
The improvement of fuel efficiency in intercity/interstate buses is very much essential to enhance the performance of the buses. Various add-on devices are available in the market for this purpose. In this study, the effects of a passive flow control device and rear extension on the reduction of overall drag have been investigated. An actual bus model is designed and CFD analysis is performed on ANSYS Fluent using the k-omega model to find the drag generated by the bus. A boat tail is attached to the rear of the bus to reduce pressure drag. It considerably reduced the large recirculation zone in the wake at the rear end of the bus. Boat tail angles ranging from 12° to 20° and lengths varying from 150 to 2000 mm are analysed. Scaled-down models (1:20) of the bus were manufactured by 3D printing for experimental validation, and smoke tests were performed initially to check the streamlines around the base and modified models, Flow separation occurred between 15° and 18°. Boat tail of length 500 mm, inclined at an angle of 12°, was found to have the perfect balance between drag reduction and practicality. A total drag reduction of 18.64% is obtained on the optimized model.
Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
J. Inst. Eng. India Ser. D
Nishanth, P. (Autor:in) / Haseebuddin, M. R. (Autor:in) / Srinath, Pranav (Autor:in) / Saleel, Naba (Autor:in) / Hegde, Pannaga (Autor:in) / Das, A. N. Mohan (Autor:in)
Journal of The Institution of Engineers (India): Series D ; 105 ; 629-641
01.08.2024
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Aerodynamic Drag Reduction of 3D Printed Bus Model and Substantiation Using Wind Tunnel
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