48 / 2021-10-11 18:56:11
Numerical simulation on the local scour processing and influencing factors of submarine pipeline
Submarine Pipeline,pipeline scour,Numerical simulation
摘要待审
胡轲 / 浙江海洋大学
白兴兰 / 浙江海洋大学
To investigate different influencing characteristics of local scour around submarine pipeline, hydrodynamic and sediment transport modules based on Flow-3D are used to numerically simulate the local scour around the pipeline. RNG k-ε turbulence model is used to simulate the turbulent flow field around the pipeline. The instantaneous shear stress of the bed surface is taken as the starting and transporting condition of sediment. The simulation results of the equilibrium scour depth and terrain around the pipeline are verified with the previous experimental results which shows good agreement. Then, the numerical simulation method is applied to investigate local scour process around pipeline during the scour process of pipelines. The results show that the local scour processes are included clearance scour, wake scour and equilibrium scour. The velocity, sediment grain size, pipeline diameter, initial gap between pipeline and seabed and the pipelines distance affects submarine pipeline equilibrium scour depth and terrain in varying degrees.

 
重要日期
  • 会议日期

    10月22日

    2021

    10月25日

    2021

  • 09月15日 2021

    提前注册日期

  • 10月25日 2021

    注册截止日期

主办单位
SUT 中国分会
大连理工大学
中国石油大学(北京)
协办单位
辽宁省力学学会
大连市科学技术协会
工业装备结构分析国家重点实验室
海岸和近海工程国家重点实验室
橡塑制品成型数值模拟与优化学科创新引智基地
大连理工大学宁波研究院
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