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首页> 外文期刊>Journal of Zhejiang University SCIENCE A >Three-dimensional numerical simulation of a vertical axis tidal turbine using the two-way fluid structure interaction approach
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Three-dimensional numerical simulation of a vertical axis tidal turbine using the two-way fluid structure interaction approach

机译：双向流固耦合作用的垂直轴潮汐涡轮机三维数值模拟

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摘要

The objective of this study was to develop, as well as validate the strongly coupled method (two-way fluid structural interaction (FSI)) used to simulate the transient FSI response of the vertical axis tidal turbine (VATT) rotor, subjected to spatially varying inflow. Moreover, this study examined strategies on improving techniques used for mesh deformation that account for large displacement or deformation calculations. The blade’s deformation for each new time step is considered in transient two-way FSI analysis, to make the design more reliable. Usually this is not considered in routine one-way FSI simulations. A rotor with four blades and 4-m diameter was modeled and numerically analyzed. We observed that two-way FSI, utilizing the strongly coupled method, was impossible for a complex model; and thereby using ANSYS-CFX and ANSYS-MECHANICAL in work bench, as given in ANSYS-WORKBENCH, helped case examples 22 and 23, by giving an error when the solution was run. To make the method possible and reduce the computational power, a novel technique was used to transfer the file in ANSYS-APDL to obtain the solution and results. Consequently, the results indicating a two-way transient FSI analysis is a time- and resource-consuming job, but with our proposed technique we can reduce the computational time. The ANSYS STRUCTURAL results also uncover that stresses and deformations have higher values for two-way FSI as compared to one-way FSI. Similarly, fluid flow CFX results for two-way FSI are closer to experimental results as compared to one-way simulation results. Additionally, this study shows that, using the proposed method we can perform coupled simulation with simple multi-node PCs (core i5).
机译：这项研究的目的是开发并验证用于模拟垂直轴潮汐涡轮（VATT）转子在空间变化下瞬态FSI响应的强耦合方法（双向流体结构相互作用（FSI））。流入。此外，本研究考察了用于网格变形的改进技术的策略，该技术考虑了大位移或变形计算。在瞬态双向FSI分析中考虑了每个新时间步的叶片变形，以使设计更加可靠。通常在常规的单向FSI仿真中不考虑这一点。对具有四个叶片且直径为4 m的转子进行建模和数值分析。我们发现，对于复杂的模型，采用强耦合方法的双向FSI是不可能的。因此，如ANSYS-WORKBENCH中所述，在工作台上使用ANSYS-CFX和ANSYS-MECHANICAL通过在运行解决方案时给出错误来帮助案例22和23。为了使该方法成为可能并减少计算能力，使用了一种新技术在ANSYS-APDL中传输文件以获得解决方案和结果。因此，结果表明双向瞬态FSI分析是一项耗时和资源消耗的工作，但是使用我们提出的技术，我们可以减少计算时间。 ANSYS STRUCTURAL结果还发现，与单向FSI相比，双向FSI的应力和变形值更高。同样，与单向模拟结果相比，双向FSI的流体流量CFX结果更接近实验结果。此外，这项研究表明，使用提出的方法，我们可以使用简单的多节点PC（核心i5）执行耦合仿真。

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  • 来源
    《Journal of Zhejiang University SCIENCE A》 |2013年第8期|574-582|共9页
  • 作者

    Syed-shah Khalid; Liang Zhang; Xue-wei Zhang; Ke Sun;

  • 作者单位

    Deepwater Engineering Research Center Harbin Engineering University">(1);

    Deepwater Engineering Research Center Harbin Engineering University">(1);

    Deepwater Engineering Research Center Harbin Engineering University">(1);

    Deepwater Engineering Research Center Harbin Engineering University">(1);

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