CFD numerical analysis of submarine landslides impact on laid-on-seafloor pipeline

Wang Zhongtao; Wang Hanyang; Zhang Yu

doi:10.3969/j.issn.0253-4193.2016.09.011

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Wang Zhongtao, Wang Hanyang, Zhang Yu. CFD numerical analysis of submarine landslides impact on laid-on-seafloor pipeline[J]. Haiyang Xuebao, 2016, 38(9): 110-117. doi: 10.3969/j.issn.0253-4193.2016.09.011

Citation:

Wang Zhongtao, Wang Hanyang, Zhang Yu. CFD numerical analysis of submarine landslides impact on laid-on-seafloor pipeline[J]. Haiyang Xuebao, 2016, 38(9): 110-117. doi: 10.3969/j.issn.0253-4193.2016.09.011

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CFD numerical analysis of submarine landslides impact on laid-on-seafloor pipeline

doi: 10.3969/j.issn.0253-4193.2016.09.011

State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;Institute of Geotechnical and Geomechanics Engineering, Dalian University of Technology, Dalian 116024, China

Received Date: 2016-04-14
Rev Recd Date: 2016-05-09

Abstract

Abstract

Submarine pipelines, in state of suspended or laid on the seafloor, were important transmissible channels of crude oil and natural gas in marine engineering. For the laid-on-seafloor pipelines, in order to get the axial and normal drag force of the pipeline under different impact angles, the CFD method was used to simulate the action of submarine landslide affecting on the submarine pipeline. Further, it was analysed that the relationship between the cross section shape of the pipeline in the impact direction and the drag force of the pipeline.The research extended the predecessors' work, enriched the calculated results of the longitudinal and the normal drag coefficient, and obtained the formula for estimating the impact force of the debris flow on the seabed pipelines.
- submarine landslide,
- laid-on-seafloor pipeline,
- CFD method,
- non-newtonian fluid,
- cross section

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References(15)

References

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