EFFECT OF ESCAPE DEVICE FOR SUBMERGED FLOATING TUNNEL (SFT) ON HYDRODYNAMIC LOADS APPLIED TO SFT |
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作者姓名: | DONG Man-sheng MIAO Guo-ping YONG Long-chang NIU Zhong-rong PANG Huan-ping HOU Chao-qun |
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作者单位: | [1]School of Civil Engineering, Hefei University of Technology, Hefei 230009, China [2]State Key Laboratory of Ocean Engineering,-Shanghai JiaoTong Universityl Shanghai 200030, China, [3]School of Transportation Engineering, Hefei University of Technology,'Hefei 230009, China |
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基金项目: | Project supported by the China Postdoctoral Science Foundation (Grant Nos. 201003274, 20090460636), the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20090111120016). |
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摘 要: | This paper presents a potential approach to settle the problem of surviving major safety accidents in Submerged Floating Tunnel (SFT) that detachable emergency escape devices are set up outside SFT. The Computational Fluid Dynamics (CFD) technology is used to investigate the effect of emergency escape devices on the hydrodynamic load acting on SFT in uniform and oscillatory flows and water waves by numerical test. The governing equations, i.e., the Reynolds-Averaged Navier-Stokes (RANS) equations and standard turbulence equations, are solved by the Finite Volume Method (FVM). Analytic solutions for the Airy wave are applied to set boundary conditions to generate water wave. The VOF method is used to trace the free surface. In uniform flow, hydrodynamic loads, applied to SFT with emergency escape device, reduce obviously. But, in oscillatory flow, it has little influence on hydrodynamic loads acting on SFT. Horizontal and vertical wave loads of SFT magnify to some extend due to emergency escape devices so that the influence of emergency escape devices on hydrodynamic loads of SFT should be taken into consideration when designed.
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关 键 词: | 水动力载荷 水中悬浮隧道 逃生装置 SFT Navier-Stokes 计算流体动力学 重大安全事故 有限体积法 |
收稿时间: | 2011-12-04 |
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