| 求解离散方程的TDMA与PDMA方法性能分析 |
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| 引用本文： | 李慧君,程刚强,罗忠录,李卫华. 求解离散方程的TDMA与PDMA方法性能分析[J]. 华北电力大学学报(自然科学版), 2006, 33(3): 46-50 |
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| 作者姓名： | 李慧君 程刚强 罗忠录 李卫华 |
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| 作者单位： | 华北电力大学,能源与动力工程学院,河北,保定,071003;陕西华电蒲城发电有限责任公司,陕西,蒲城,715501 |
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| 摘 要： | 对二维对流扩散问题,应用延迟修正-TDMA和ADI-PDMA方法,求解对流项采用QUICK,CD格式的离散方程。通过SIMPLER算法求解二维移动顶盖驱动方腔内不可压缩流体流动和方腔内自然对流换热。比较了采用延迟修正-TDMA和ADI-PDMA两种求解代数方程组的性能,分析了影响上述两种方法求解速度、收敛的因素。在相同的条件下,通过计算证明了延迟修正-TDMA的健壮性强、精度较高、收敛速度较快。
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| 关 键 词： | TDMA PDMA 离散方程 收敛速度 |
| 文章编号： | 1007-2691(2006)03-0046-05 |
| 修稿时间： | 2005-11-22 |
Performance analysis of TDMA and PDMA methods for solution to discrete equation |
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| LI Hui-jun,CHENG Gang-qiang,LUO Zhong-lu,LI Wei-hua. Performance analysis of TDMA and PDMA methods for solution to discrete equation[J]. Journal of North China Electric Power University, 2006, 33(3): 46-50 |
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| Authors: | LI Hui-jun CHENG Gang-qiang LUO Zhong-lu LI Wei-hua |
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| Abstract: | The QUICK scheme,CD scheme,deferred correction-TDMA and ADI-PDMA are used to solve the two-dimensional convection-diffusion problem.The two-dimensional incompressible flow in lid-driven square cavity and free convection heat transfer in square cavity are solved with SIMPLER algorithm.Performances of deferred correction-TDMA and ADI-PDMA are compared.The factors influencing the convergence and iteration cycle are analyzed.The calculation result shows that the deferred correction-TDMA is superior to the ADI-PDMA. |
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| Keywords: | TDMA PDMA discrete equation convergence speed |
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