| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4924871 | Journal of Wind Engineering and Industrial Aerodynamics | 2017 | 5 Pages |
Abstract
The objective of this study was to investigate the effects of oblique tunnel portals on train and tunnel aerodynamics using a 1:20 scale moving model device. Transient pressure and micro-pressure waves were measured using pressure sensors as the train model travelled through various tunnel models at a speed of 350Â km/h. The mitigation physical mechanism of oblique tunnel portal on the initial compression wave was explained. Experimental results showed that oblique tunnel portals had obvious mitigation effect on- the pressure gradient and micro-pressure wave induced by the train model passing through the tunnel model. A hat oblique tunnel portal combined with a buffer structure with top holes was particularly effective.
Related Topics
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Authors
Lei Zhang, Ming-zhi Yang, Xi-feng Liang, Jian Zhang,