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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >An adaptive inner iterative pressure-based algorithm for steady and unsteady incompressible flows
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An adaptive inner iterative pressure-based algorithm for steady and unsteady incompressible flows

机译：基于自适应内部迭代压力的稳态不稳定流量算法

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摘要

Purpose - Pressure-based methods have been demonstrated to be powerful for solving many practical problems in engineering. In many pressure-based methods, inner iterative processes are proposed to get efficient solutions. However, the number of inner iterations is set empirically and kept fixed during the whole computation for different problems, which is overestimated in some computations but underestimated in other computations. This paper aims to develop an algorithm with adaptive inner iteration processes for steady and unsteady incompressible flows. Design/methodology/approach - In this work, with the use of two different criteria in two inner iterative processes, a mechanism is proposed to control inner iteration processes to make the number of inner iterations vary during computing according to different problems. By doing so, adaptive inner iteration processes can be achieved. Findings - The adaptive inner iterative algorithm is verified to be valid by solving classic steady and unsteady incompressible problems. Results show that the adaptive inner iteration algorithm works more efficient than the fixed inner iteration one. Originality/value - The algorithm with adaptive inner iteration processes is first proposed in this paper. As the mechanism for controlling inner iteration processes is based on physical meaning and the feature of iterative calculations, it can be used in any methods where there exist inner iteration processes. It is not limited for incompressible flows. The performance of the adaptive inner iteration processes in compressible flows is conducted in a further study.
机译：目的 - 基于压力的方法已经证明了解决工程中许多实际问题的强大。在许多基于压力的方法中，提出了内部迭代过程以获得有效的解决方案。然而，内部迭代的数量是经验的，并且在整个计算期间保持固定，以用于不同的问题，这在某些计算中高估但在其他计算中被低估了。本文旨在开发一种具有自适应内迭代过程的算法，用于稳定和不稳定的不可压缩流程。设计/方法/方法 - 在这项工作中，通过在两个内部迭代过程中使用两个不同的标准，提出了一种机制来控制内部迭代过程，以使内部迭代的数量在计算期间根据不同问题而变化。通过这样做，可以实现自适应内部迭代过程。调查结果 - 通过解决经典稳定和不稳定的不可压缩问题，验证了自适应内部迭代算法。结果表明，自适应内部迭代算法工作比固定内部迭代更有效。原创性/值 - 本文首先提出了具有自适应内迭代过程的算法。由于用于控制内部迭代过程的机制基于物理含义和迭代计算的特征，它可以用于存在内部迭代过程的任何方法中。不限于不可压缩的流动。在进一步的研究中进行了可压缩流中自适应内迭代过程的性能。

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    Jin-Ping Wang; Jian-Fei Zhang; Zhi-Guo Qu; Wen-Quan Tao;

  • 作者单位

    Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education School of Energy and Power Engineering Xi'an Jiaotong University Xi'an China;

    Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education School of Energy and Power Engineering Xi'an Jiaotong University Xi'an China;

    Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education School of Energy and Power Engineering Xi'an Jiaotong University Xi'an China;

    Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education School of Energy and Power Engineering Xi'an Jiaotong University Xi'an China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Efficiency; Adaptive inner iterative processes; Incompressible flows;

    机译：效率;适应性内心迭代过程;不可压缩的流动;
  • 入库时间 2022-08-18 21:42:04

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