| 张大伟,程晓陶,黄金池,何晓燕.复杂明渠水流运动的高适用性数学模型[J].水利学报,2010,41(5): |
| 复杂明渠水流运动的高适用性数学模型 |
| Widely adaptable numerical model for complicated open channel flows |
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| DOI： |
| 中文关键词: 数学模型 明渠水流 有限体积法 HLL 格式 |
| 英文关键词: runoff simulation Xin’anjiang Hydrological Model Particle Swarm Optimization algorithm analysis parameter selection calibration efficiency |
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| 中文摘要: |
| 采用Godunov 格式的有限体积法建立了模拟复杂明渠水流运动的高适用性数学模型。模型利用HLL 格式的近似Riemann 解计算界面通量。为了获得更高的分辨率，采用TVD-MUSCL 格式和Hancock 格式将计算格式的整体精度提高到二阶，并且采用通量替换的方法保证了计算格式的守恒性。通过物理模型试验资料对数学模型进行了验证，结果表明该模型能准确地模拟各种复杂的明渠水流运动，具有良好的稳定性和适用性。 |
| 英文摘要: |
| A widely adaptable finite-volume numerical model based on Godunov method was proposed for simulating complicated open channel flows. In the model the HLL approximate Riemann solution was used to calculate the flow flux，the TVD-MUSCL format and the Hancock format were used to achieve second order accuracy. In order to keep the conservative property，the flux displacement method was used in the model. The validity and adaptability of the proposed model are verified by experimental data of physical model. |
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