| 泄洪雨雾输运的数学模型研究 |
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| 引用本文： | 柳海涛,刘之平,孙双科.泄洪雨雾输运的数学模型研究[J].四川大学学报(工程科学版),2010,42(3):78-83. |
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| 作者姓名： | 柳海涛 刘之平 孙双科 |
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| 作者单位： | 中国水利水电科学研究院,水力学研究所,北京,100038 |
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| 基金项目： | 国家自然科学基金资助项目(50879094) |
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| 摘 要： | 针对泄洪雨雾在河谷中的对流与沉降问题,提出一种3维有限元计算模型,该模型通过对浓度梯度矢的求解,可保证浓度计算的非负性与单调性.同时,根据气象学中雨滴谱函数与水滴沉降速度等概念,导出雨雾浓度与降雨强度间的定量转换关系,使其与其他雾化近区数学模型实现边界耦合.运用本文模型对瀑布沟电站泄洪洞雾化分布进行模拟,计算结果与真实的物理规律相一致,为今后类似工程问题的研究提供了适用手段.
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| 关 键 词： | 泄洪雾化 雨雾输运 有限元模型 降雨分布 含水浓度 |
| 收稿时间： | 2009/4/20 0:00:00 |
| 修稿时间： | 2009/8/10 0:00:00 |
Study on the Numerical Model for the Rain-fog Transportation During Flood Discharge |
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| Liu Haitao,Liu Zhiping and Sun Shuangke.Study on the Numerical Model for the Rain-fog Transportation During Flood Discharge[J].Journal of Sichuan University (Engineering Science Edition),2010,42(3):78-83. |
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| Authors: | Liu Haitao Liu Zhiping and Sun Shuangke |
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| Affiliation: | LIU Hai-tao,LIU Zhi-ping,SUN Shuang-ke (China Inst.of Water Resources , Hydropower Research,Beijing 100038,China) |
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| Abstract: | A three-dimensional finite element model was developed to calculate the rain-fog convection and sedimentation in valley during the flood discharge.By the proper solution of the concentration gradient vector,the nonnegative type and monotonic changes of the concentration is maintained during the transportation.With the concept of raindrop size distribution and settlement velocity,the formulas was derived for the quantitative conversion between the rainfall intensity and water concentration,which is available... |
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| Keywords: | flood discharge atomization rain-fog transportation finite element model rainfall distribution water concentration |
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