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| Unsteady simulation analyses of the traffic force in curvy highway tunnel |
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| DOI：10.7511/jslx20085136 |
| KeyWord:curvy tunnel,the traffic ventilation force,numerical simulation,straight tunnel |
| WANG Feng WANG Ming-nian DENG yuan-ye |
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| Abstract: |
| To analyze the traffic ventilation force by passing vehicle in curvy tunnel of small radius,The three-dimensional unsteady numerical analysis using the moving mesh and the sliding interface methods was carried out for the curvy tunnel(R=600 m) and the straight tunnel.The results shows that the numerical model result for the straight tunnel with moving mesh method is agree with the experimental data.The velocity distribution of the section is dissymmetrical in the curvy tunnel.The outer velocity of the section is higher and the inner velocity is lower.The traffic ventilation force of curvy tunnel is obviously greater than that of the straight tunnel and the force of the bus running on the inner line is bigger than that of the bus running on the outer.In the curvy tunnel,the peak of the low pressure places on the side surface of the head,compared with that of straight tunnel,it is lower,the pressure increases longitudinally.The lower pressure also places on the leeward surface of the back. |
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