Determination of Drag Coefficient for Hyundai Model Using the Strain Gauge Method
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 3
Abstract
The flow field around an automobile is very complex, characterized by a high degree of Three dimensionality, flow separation, reattachment and vortex formation. Flow visualization as well as flow simulation are helpful tools during the aerodynamic design of vehicles. The research-undertaken deals with an experimental estimation of CD (drag coefficient) for Hyundai car, (scale 1/30) using the strain gauge method ( FLA-6-11 type, 120Ω, 2.12 gauge factor, half-bridge connection), which was proved to be practical and reasonably accurate. Experiments were run within a subsonic aspiration wind tunnel, covering an air speed up to 33 m/s (i.e., Reynolds number 6.6 x 105 ). Results for drag coefficient were obtained in the range of 0.96 to 0.39. It was noted that the magnitude of CD decreased from 0.96 at 21.17 m/s to 0.39 at 33.00 m/s (i.e., decrease of drag coefficient by about 60%). Comparison of our results with those given by other authors is satisfactory.
Authors and Affiliations
Abdessamed Kacem, Ali Najim Abdullah
Keywords
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- EP ID EP437893
- DOI 10.9790/1684-1503012328.
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