CFD Based Investigations into Optimization of Diffuser Angle on Rear Bus Body

Wawan Aries Widodo; Mutiara Nuril Karohmah

doi:10.4028/www.scientific.net/AMM.836.127

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 836CFD Based Investigations into Optimization of...

CFD Based Investigations into Optimization of Diffuser Angle on Rear Bus Body

Abstract:

Fluid flow interaction around bluff body to create aerodynamic forces including drag and lift force. The strategy to improve arodynamic forces to modify the shape of rear body. This investigation is conducted to simulate fluid flow past a bus body with variation of diffuser angle on the rear. The diffuser angle was set to 0°, 6°, 12°, and 18°, respectively. The CFD simulation results shown that diffuser on rear body bus models able to improve the aerodynamic forces and wake structure are correspond with incresing diffuser angle. The drag coefficient was reduced until 2.3% is related with diffuser angle (β) 18⁰, also, diffuser angle (β) 12⁰ capable to increase downforce significantly until ten times are compared with zero diffuser angle.

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Periodical:

Applied Mechanics and Materials (Volume 836)

Pages:

127-131

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.836.127

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Online since:

June 2016

Authors:

Wawan Aries Widodo*, Mutiara Nuril Karohmah

Keywords:

Diffuser Angle, Drag Coefficient, Lift Coefficient, Rear Body

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* - Corresponding Author

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