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论文类型：期刊论文

发表时间：2012-09-01

发表刊物：JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING

收录刊物：SCIE、Scopus

卷号：138

期号：5

页面范围：394-405

ISSN号：0733-950X

关键字：Hydrodynamic force; Large pipeline; Small pipeline; Piggyback configuration; Waves

摘要：Experiments on a large pipeline and a small pipeline in a piggyback configuration under regular and irregular waves are carried out. A comparison of the wave forces on the large pipeline and the small pipeline is made. The nondimensional force coefficients for the drag, inertia, and lift are obtained based on theMorison equation. The effects of the Keulegan-Carpenter (KC) number and the spacing ratio between the two pipelines on the force coefficients for the large pipeline, small pipeline, and piggyback pipeline system are investigated. The experimental results indicate that the variation tendencies of the drag coefficients and inertia coefficients with the KC number or the spacing ratio for the large pipeline, small pipeline, and piggyback pipeline system are similar. The variation tendency of the lift coefficient with the spacing ratio for the large pipeline is opposite to that for the small one. DOI: 10.1061/(ASCE)WW.1943-5460.0000144. (C) 2012 American Society of Civil Engineers.