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| Performance study of pressure-correction fully-implicit algorithm—IDEAL on different grid skew rates |
| Received:January 09, 2016 Revised:July 09, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201702009 |
| KeyWord:pressure-correction algorithm IDEAL grid skew rate robustness convergence rate |
| Author | Institution |
| 孙东亮 |
北京石油化工学院 机械工程学院 北京 |
| 王艳宁 |
华北电力大学 可再生能源学院 北京 |
| 张奥林 |
北京化工大学 机电工程学院 北京 |
| 宇波 |
北京石油化工学院 机械工程学院 北京 |
| 李汉勇 |
北京石油化工学院 机械工程学院 北京 |
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| Abstract: |
| In 2008, an efficient pressure-correction fully-implicit algorithm for fluid flow and heat transfer problems, called IDEAL, was proposed by the present author and Tao et al. In IDEAL algorithm there exist inner double-iterative processes for pressure equation on each iteration level, almost completely overcoming two approximations in SIMPLE algorithm. Thus the coupling between velocity and pressure is fully guaranteed, greatly enhancing the convergence and robustness. In order to further extend the IDEAL algorithm, the lid-driven flow in a 3D inclined cavity is adopted to analyse its solving performance on different grid skew rates. It can be concluded that the IDEAL algorithm is more robust and more efficient than the SIMPLE algorithm on different grid skew rates, especially for the case of highly skewed grid system. The IDEAL algorithm keeps the same degree of robustness on different grid skew rates and can converge almost at any under-relaxation factor. Compared with the SIMPLE algorithm, the shortest computation time of the IDEAL algorithm can be reduced by 56%~89%. The superiority of the IDEAL algorithm is verified based on the above analyses. |