HIGH PERFORMANCE NUMERICAL SIMULATION METHOD FOR NON-POINT SOURCE POLLUTION TRANSFER PROCESS
-
摘要: 高效高精度模拟面源污染输移过程,掌握面源污染的输移规律,是研究面源污染最直接有效的途径之一,也是管理和控制面源污染的有效手段。基于此,提出了一种全面耦合二维水文水动力及污染物输移过程的数值模型,采用二阶Godunov格式的有限体积法进行求解,利用GPU加速技术提高计算效率。结果表明:在理想条件下,数值解与解析解间的平均相对误差为2.5%。对不同面积和精度的城市地表面源污染和农业面源污染输移过程的模拟结果显示,二者的输移规律符合实际的物理过程,模拟总时长为7200 s,城市地表面源污染模拟结果只需186 s;农业面源污染模拟结果只需1169 s,计算效率有显著提升。综上所述,GAST模型对不同下垫面面源污染可实现高精度模拟,且模拟效率有显著提升,为今后面源污染的治理和防控提供参考。Abstract: Efficient and high-precision simulation of the process of non-point source pollution and mastering the law of non-point source pollution is one of the most direct and effective ways to study non-point source pollution, and also an effective way to manage and control non-point source pollution. Based on this, this paper proposed a numerical model that fully coupled two-dimensional hydro-hydrodynamic and pollutant transport processes. It used the second-order Godunov format finite volume method to solve the problem, and used GPU acceleration technology to improve computing efficiency. The results showed that, under ideal conditions, the average relative error between the numerical and analytical solutions was 2.5%. The transport processes of urban surface source pollution and agricultural non-point source pollution with different areas and accuracy were simulated, and the results showed that the transport laws of the two were consistent with the actual physical process. The total simulation time was 7200 s. The simulation of urban surface source pollution took only 186 s; the simulation of agricultural non-point source pollution took 1169 s, and the calculation efficiency was significantly improved. In summary, the GAST model could not only achieve high-precision simulation of different underlying surface source pollution simulations, but also significantly improve the simulation efficiency, and provide basic support for future non-point source pollution control and prevention.
-
万金保,刘峰,汤爱萍,等. 小流域典型面源污染最佳管理措施(BMPs)研究[J]. 水土保持学报,2010,24(6):181-184. 罗娜,李华,樊霆,等. HSPF模型在流域面源污染模拟中的应用[J]. 浙江农业科学,2019,60(1):141-145. 赖锡军. 流域水环境过程综合模拟研究进展[J]. 地理科学进展,2019,38(8):1123-1135. 夏军,翟晓燕,张永勇. 水环境非点源污染模型研究进展[J]. 地理科学进展,2012,31(7):941-952. 马萌华,李家科,邓陈宁. 基于SWMM模型的城市内涝与面源污染的模拟分析[J]. 水力发电学报,2017,36(11):62-72. 尹刚.基于SWAT2000的图们江流域氮磷营养物非点源污染研究[D].长春:东北师范大学,2009. 王序驰,金明姬,冯恒栋. 分布式水文模型SWAT在非点源污染研究中的应用进展[J]. 延边大学农学学报,2016,38(3):271-276. 李冉,闫红娇,焦保义,等. 基于SWAT模型的漳河流域面源污染模拟研究[J]. 水利科技与经济,2017,23(9):6-13. 王文章,程艳,敖天其,等. 基于SWAT模型的古蔺河流域面源污染模拟研究[J]. 中国农村水利水电,2018(10):32-36,42. 邹常亮.低影响开发(LID)小区面源污染过程与控制效果研究[D].青岛:青岛大学,2017. 张士官,吕谋,焦春蛟,等. 雨洪管理模型SWMM原理解析及应用进展[J]. 人民珠江,2019(12):37-42. 王晓青,李哲. SWAT与MIKE21耦合模型及其在澎溪河流域的应用[J]. 长江流域资源与环境,2015,24(3):426-432. 刘斯文,刘海隆,王玲. MIKE SHE模型的发展与应用研究[J]. 水文,2018,38(5):23-28. 侯精明,李桂伊,李国栋,等. 高效高精度水动力模型在洪水演进中的应用研究[J]. 水力发电学报,2018,37(2):96-107. LIANG Q H, BORTHWICK A G L, STELLING G. Simulation of dam- and dyke-break hydrodynamics on dynamically adaptive quadtree grids[J]. International Journal for Numerical Methods in Fluids,2004,46(2):127-162. HOU J M, LIANG Q H, ZHANG H B, et al. An efficient unstructured MUSCL scheme for solving the 2D shallow water equations[J]. Environmental Modelling & Software,2015,66:131-152. HOU J M, LIANG Q H, SIMONS F, et al. A stable 2D unstructured shallow flow model for simulations of wetting and drying over rough terrains[J]. Computers & Fluids,2013,82(17):132-147. HOU J M, SIMONS F, MAHGOUB M, et al. A robust well-balanced model on unstructured grids for shallow water flows with wetting and drying over complex topography[J]. Computer Methods in Applied Mechanics & Engineering,2013,257(15):126-149. LIANG Q H, SMITH L S. A high-performance integrated hydrodynamic modelling system for urban flood simulations[J]. Journal of Hydroinformatics,2015,17(4):518-533. 王润.高分辨率城市内涝过程数值模拟研究[D].西安:西安理工大学,2018. 侯精明,李东来,王小军,等. 建筑小区尺度下LID措施前期条件对径流调控效果影响模拟[J]. 水科学进展,2019,30(1):45-55. 李丹,韩颖. 常州市老镇区典型河道水体面源污染的模拟计算[J]. 安徽化工,2018,44(3):83-85. 唐洪武,闫静,肖洋,等. 含植物河道曼宁阻力系数的研究[J]. 水利学报,2007,38(11):1347-1353. 郑爽,吴一红,白音包力皋,等. 含水生植物河道曼宁糙率系数的试验研究[J]. 水利学报,2017,48(7):874-881. 毕旭,程龙,姚东升,等. 西安城区暴雨雨型分析[J]. 安徽农业科学,2015,43(35):295-297,325. 侯精明,郭凯华,王志力,等. 设计暴雨雨型对城市内涝影响数值模拟[J]. 水科学进展,2017,28(6):820-828. 聂俊坤,李婷婷,霍毅鹏,等. 基于规划视角的城市面源污染防控关键问题及策略研究[J]. 中国水利,2018(13):29-32. 龚世飞,丁武汉,肖能武,等. 丹江口水库核心水源区典型流域农业面源污染特征[J]. 农业环境科学学报,2019,38(12):2816-2825.
点击查看大图
计量
- 文章访问数: 148
- HTML全文浏览量: 21
- PDF下载量: 5
- 被引次数: 0