摘要：In the present paper, fluid force distribution of a long flexible cylinder subject to vortex-induced vibrations is investigated by Generalized Integral Transform Technique (GITT). This method is using experimental response data as input, and then implementing GITT to transfer the governing differential equations to ordinary differential equations. Therefore, the selection of truncation order could be analyzed to avoid the error induced by the high-mode response. Once each mode contribution of fluid force is obtained, the analytical inversion transfer recovers the fluid force. An experiment was carried out in a towing tank and the experimental response was accurately measured and used as input, then GITT was performed to calculate the fluid force distribution of the long flexible cylinder. The comparison between the numerical results from GITT and the experimental results from load cell verified the capability and availability of the proposed method. If one can use this method for lower modes, then one certainly can extend the method for higher modes. Two experimental cases from the literature were evaluated and good agreement was obtained based on the spatio-temporal evolutions of the lift coefficient and the mode numbers. Since this method is easy to implement, it could be an alternative method to investigate fluid force of such slender structures.

关键字：Fluid force Integral transform Vortex-induced vibrations Model test Towing tank Flexible cylinder

ISSN号：0948-4280

卷、期、页：卷: 21 期: 4 页: 663-678

发表日期：2016-12-01

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）

发表期刊名称：JOURNAL OF MARINE SCIENCE AND TECHNOLOGY

第一作者：顾继俊,段梦兰

论文类型：期刊论文

论文概要：顾继俊,段梦兰，Integral transform solution for fluid force investigation of a flexible circular cylinder subject to vortex-induced vibrations，JOURNAL OF MARINE SCIENCE AND TECHNOLOGY，2016，卷: 21 期: 4 页: 663-678

论文题目：Integral transform solution for fluid force investigation of a flexible circular cylinder subject to vortex-induced vibrations