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Parallel implementations of coupled formulations for the analysis of floating production systems, Part II: Domain decomposition strategies

机译：用于浮动生产系统分析的耦合公式的并行实现，第二部分：域分解策略

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摘要

This work presents the implementation, on computers with parallel architecture, of domain decomposition strategies for the coupled analysis of floating production systems (FPS). The strategies are associated to formulations for the coupling of the equations of motion of hull and lines, and to different algorithms for the solution of these equations. The strategies are grouped as "external" and "internal". The former incorporates a "master-slave" scheme where the hull equations are solved in the "master" processor, and the equations of each line are solved in the "slave" processors. This scheme is associated to an external subcycling procedure, where the time step employed to integrate the hull equations is larger than the step for the lines. In the "internal" partition strategies, the FE mesh of each line is partitioned amongst the processors. Different strategies are presented, including an internal subcycling procedure associated to an explicit algorithm, using distinct time steps to integrate the equations of each partition (according to its physical characteristics); and an implicit domain decomposition method where completely arbitrary mesh partitions may be defined. Results of case studies are presented, to assess the performance of the parallel implementations described.
机译：这项工作介绍了具有并行体系结构的计算机上域分解策略的实现，以对浮动生产系统（FPS）进行耦合分析。这些策略与船体和直线运动方程的耦合公式有关，并与这些方程的求解算法不同。这些策略分为“外部”和“内部”。前者采用“主-从”方案，其中，船体方程式在“主”处理器中求解，每行的方程在“从”处理器中求解。该方案与外部子循环程序相关，其中用于集成船体方程的时间步长大于生产线的步长。在“内部”分区策略中，每行的FE网格在处理器之间进行分区。提出了不同的策略，包括与显式算法相关的内部子循环过程，使用不同的时间步长对每个分区的方程进行积分（根据其物理特征）；一种隐式域分解方法，其中可以定义完全任意的网格划分。介绍了案例研究的结果，以评估所述并行实施的性能。

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  • 来源
    《Ocean Engineering》 |2012年第12期|p.219-234|共16页
  • 作者

    Breno Pinheiro Jacob; Luciano Donizetti Franco; Marcos Vinicius Rodrigues; Fabricio Nogueira Correa; Bruno Martins Jacovazzo;

  • 作者单位

    LAMCSO-Laboratory of Computer Methods and Offshore Systems, COPPE/UFRJ-Post-Craduate Institute of the Federal University of Rio de Janeiro, Civil Engineering Department,Centro de Tecnologia Bloco B sala B-101, Cidade Universitaria, Ilha do Fundao, Caixa Postal 68.506, 21945-970 Rio de Janeiro, RJ, Brazil;

    LAMCSO-Laboratory of Computer Methods and Offshore Systems, COPPE/UFRJ-Post-Craduate Institute of the Federal University of Rio de Janeiro, Civil Engineering Department,Centro de Tecnologia Bloco B sala B-101, Cidade Universitaria, Ilha do Fundao, Caixa Postal 68.506, 21945-970 Rio de Janeiro, RJ, Brazil;

    LAMCSO-Laboratory of Computer Methods and Offshore Systems, COPPE/UFRJ-Post-Craduate Institute of the Federal University of Rio de Janeiro, Civil Engineering Department,Centro de Tecnologia Bloco B sala B-101, Cidade Universitaria, Ilha do Fundao, Caixa Postal 68.506, 21945-970 Rio de Janeiro, RJ, Brazil;

    LAMCSO-Laboratory of Computer Methods and Offshore Systems, COPPE/UFRJ-Post-Craduate Institute of the Federal University of Rio de Janeiro, Civil Engineering Department,Centro de Tecnologia Bloco B sala B-101, Cidade Universitaria, Ilha do Fundao, Caixa Postal 68.506, 21945-970 Rio de Janeiro, RJ, Brazil;

    LAMCSO-Laboratory of Computer Methods and Offshore Systems, COPPE/UFRJ-Post-Craduate Institute of the Federal University of Rio de Janeiro, Civil Engineering Department,Centro de Tecnologia Bloco B sala B-101, Cidade Universitaria, Ilha do Fundao, Caixa Postal 68.506, 21945-970 Rio de Janeiro, RJ, Brazil;

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  • 正文语种 eng
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  • 关键词

    floating production systems; mooring systems; risers; nonlinear dynamics; coupled analysis; parallel implementations;

    机译：浮动生产系统;系泊系统;冒口非线性动力学;耦合分析;并行实现;

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