A hybrid first-order and WENO scheme for the high-resolution and computationally efficient modeling of pollutant transport
A hybrid first-order and WENO scheme for the high-resolution and computationally efficient modeling of pollutant transport
复制标题
用于污染物传输高分辨率和计算效率建模的混合一阶和 WENO 方案
DOI:
10.1016/j.compfluid.2021.104951
复制
发表时间:
2021-05
影响因子:
2.8
通讯作者:
Liao Weihong
中科院分区:
文献类型:
--
作者:
Hu Yuying;Hu Peng;Li Wei;Liao Weihong
To improve the modeling quality of pollutant transport in shallow waters, different reconstruction schemes have been proposed to better link the edge values to the centroid values of a pollutant concentration in finite-volume shallow water models: a scheme of higher (lower) order generally has a better (poorer) quantitative accuracy but lower (higher) computational efficiency. Here, a numerical comparative study of several classical schemes is first conducted under a variety of pollutant distribution conditions. The results reveal that, for the condition of relatively uniform pollutant distribution, the numerical accuracy of a lower-order scheme (such as the first-order scheme or the MUSCL scheme) may be similar to that of a higher-order scheme (such as the WENO scheme). The second-order derivative of the concentration, here termed the nonlinear indicator (NI), correlates well with the discrepancies between the numerical solutions and analytical solutions. A threshold value of approximately 10− 7∼ 10− 6 m-2 for the NI is identified, above which a higher-order scheme may be required. Based on this understanding, a hybrid first-order and WENO scheme is proposed. Numerical case studies show that the hybrid scheme can successfully combine the efficiency of the first-order scheme with the high accuracy of the WENO scheme for pollutant modeling.
登录
查看更多内容
影响因子:
4.7
作者:
P. Hu;Y. Lei;Jianjian Han;Z. Cao;Huai-han Liu;Zhiguo He
通讯作者:
P. Hu;Y. Lei;Jianjian Han;Z. Cao;Huai-han Liu;Zhiguo He
DOI:
10.1016/j.envsoft.2010.06.008
发表时间:
2010-12
期刊:
Environ. Model. Softw.
影响因子:
--
作者:
D. Liang;Xiaolin Wang;R. Falconer;B. Bockelmann-Evans
通讯作者:
D. Liang;Xiaolin Wang;R. Falconer;B. Bockelmann-Evans
DOI:
10.1016/j.jcp.2016.05.023
发表时间:
2016-09
期刊:
J. Comput. Phys.
影响因子:
--
作者:
D. Vanzo;A. Siviglia;E. Toro
通讯作者:
D. Vanzo;A. Siviglia;E. Toro
DOI:
10.1002/(sici)1097-0363(19970615)24:11
发表时间:
1997-06
影响因子:
1.8
作者:
S. Liang;G. Neitzel;C. Aidun
通讯作者:
S. Liang;G. Neitzel;C. Aidun
DOI:
10.1016/j.jcp.2006.06.043
发表时间:
2007-02
期刊:
J. Comput. Phys.
影响因子:
--
作者:
M. Dumbser;M. Käser
通讯作者:
M. Dumbser;M. Käser