Numerical study of multiple-channel diffusers on the rear bus body

3D-Simplified bus model (without wheels) is inspected at Reynolds number 2.19×106 (based on the length of bus and velocity inlet). A modification to increase the aerodynamics performance of vehicle is performed by using multiple-channel diffusers on the rear bus body. Diffuser angle (β) 12° is chose...

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Bibliographic Details
Main Authors: Sucipto, Sabdono Abdi, Widodo, Wawan Aries
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamics
Diffusers
Drag coefficients
Fluid flow
Mathematical analysis
Mathematical models
Negative lift
Reynolds number
Three dimensional models
Vehicle wheels
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Summary:3D-Simplified bus model (without wheels) is inspected at Reynolds number 2.19×106 (based on the length of bus and velocity inlet). A modification to increase the aerodynamics performance of vehicle is performed by using multiple-channel diffusers on the rear bus body. Diffuser angle (β) 12° is chosen as a constant variable. Two, Three and Four Channels are chosen as a variable. The results show that multiple channel diffuser can increase aerodynamics performance of the bus. Two channel produces optimal negative lift while Four channel produces optimal drag coefficient.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4968347