Experimental study on Ahmed’s body drag coefficient

Dominik Wysocki

University of Technology, 42-201 Częstochowa, Poland

Arkadiusz Szymanek

University of Technology, 42-201 Częstochowa, Poland


Abstract

The work presents an experimental designation of the aerodynamic drag coefficient for two configurations of the Ahmed body model, with slant angle of 25o and with the inactive synthetic jet generator. When analyzing the aerodynamic drag of vehicles, most authors focus on higher Reynolds numbers, describing lower values only by designated trend lines. Which is why the main contribution of this experimental work was to designate the Ahmed’s body drag coefficient for low Reynolds numbers and to verify the obtained results with other authors experiments especially with the trend lines for Reynolds number in the range 0,35x105 – 1,8x105. For data taken from the literature, it can be seen that the value of the drag coefficient for the Ahmed body model decreases when the Reynolds number increases. The results obtained during the experiment show the opposite tendency.


Keywords:

Ahmed body, aerodynamics, wind tunnel, drag coefficient, boundary layer


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Published
2022-09-05

Cited by

Wysocki, D., & Szymanek, A. (2022). Experimental study on Ahmed’s body drag coefficient. Technical Sciences, 25, 87–105. https://doi.org/10.31648/ts.7897

Dominik Wysocki 
University of Technology, 42-201 Częstochowa, Poland
Arkadiusz Szymanek 
University of Technology, 42-201 Częstochowa, Poland



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Copyright (c) 2022 Dominik Wysocki, Arkadiusz Szymanek

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