An evaluation of force terms in the lattice Boltzmann models in simulating shallow water flows over complex topography
文献类型：期刊论文
| 作者 | Huang, Ping5; Li, Shaotian3; Li, Yineng3; Zeng, Zeyu5; Peng, Shiqiu1,4 |
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
 |
| 出版日期 | 2019 |
| 卷号 | 90期号:7页码:357 |
| 关键词 | bed slope complex topography forcing scheme lattice Boltzmann shallow water flows source terms |
| ISSN号 | 0271-2091 |
| DOI | 10.1002/fld.4726 |
| 英文摘要 | Proper approximation of the force terms, especially the bed slope term, is of crucial importance to simulating shallow water flows in lattice Boltzmann (LB) models. However, there is little discussion on the schemes of adding force terms to LB models for shallow water equations (SWEs). In this study, we evaluate the performance of forcing schemes coupled with different LB models (LABSWE and MLBSWE) in simulating shallow water flows over complex topography and try to find out their intrinsic characteristics and applicability. Three cases are adopted for evaluation, including a stationary case, a one-dimensional tidal wave flow over an irregular bed, and a steady flow over a two-dimensional seamount. The simulating results are compared with analytical solutions or the results produced by the finite difference method. For LABSWE, all the forcing schemes, except for the weighting factor method, fail to produce accurate solutions for the test cases; this is probably due to the mismatch between the bed slope term in source terms and the quadratic depth term of the equilibrium distribution functions in these forcing schemes. For MLBSWE, all the forcing schemes are capable of simulating flows over the complex topography accurately; furthermore, those schemes taking into account the collision effect tau to eliminate the momentum induced by forces provide more accurate solutions with quicker convergence as the lattice size decreases. In this view, MLBSWE can bring more flexibility in treating the force terms and thus can be a better tool to simulate shallow water flows over complex topography in practical application. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17702]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou, Guangdong, Peoples R China 3.Qinzhou Univ, Guangxi Key Lab Marine Disaster Beibu Gulf, Qinzhou, Peoples R China 4.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Ping,Li, Shaotian,Li, Yineng,et al. An evaluation of force terms in the lattice Boltzmann models in simulating shallow water flows over complex topography[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS,2019,90(7):357, 373. |
| APA | Huang, Ping,Li, Shaotian,Li, Yineng,Zeng, Zeyu,&Peng, Shiqiu.(2019).An evaluation of force terms in the lattice Boltzmann models in simulating shallow water flows over complex topography.INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS,90(7),357. |
| MLA | Huang, Ping,et al."An evaluation of force terms in the lattice Boltzmann models in simulating shallow water flows over complex topography".INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS 90.7(2019):357. |
入库方式： OAI收割
来源：南海海洋研究所
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