Reducing Underwater-Slide Impact Forces on Pipelines by Streamlining
Reducing Underwater-Slide Impact Forces on Pipelines by Streamlining
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DOI：
10.1061/(asce)ww.1943-5460.0000113
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发表时间：
2012-03
期刊：
影响因子：
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通讯作者：
Sergio Perez-Gruszkiewicz
中科院分区：
文献类型：
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作者：
Sergio Perez-Gruszkiewicz
结果来自实验和计算流体动力学 (CFD) 模拟，涉及受沉积物/水混合物影响的悬浮水下管道或结构的流线型化。实验表明，通过流线型化可以实现力的显着减小，并且这种力的减小在较低雷诺数时最为显着。测试了几种形状：圆形、翼型和楔形。其中，楔形件表现出最低的阻力系数，在低雷诺数时约为圆柱形管的五分之一，在较高雷诺数时约为圆柱形管的一半。
Results are presented from experiments and computational fluid dynamics (CFD) simulations involving the streamlining of suspended underwater pipelines or structures subject to impacts from sediment/water mixtures. The experiments showed that a considerable reduction in force may be achieved by streamlining, and this reduction in force is most significant at lower Reynolds numbers. Several shapes were tested: round, airfoil, and wedge. Of these, the wedge exhibited the lowest drag coefficient—about one-fifth of the cylindrical pipe at low values of the Reynolds number, and about half at higher Reynolds numbers.