Xia_et_al-2018-Water_Resources_Research.pdf (351.79 kB)
Reply to comment by Lu et al. on “An efficient and stable hydrodynamic model with novel source term discretization schemes for overland flow and flood simulations”
journal contribution
posted on 2018-07-31, 08:52 authored by Xilin Xia, Qiuhua LiangQiuhua Liang, Xiaodong Ming, Jingming HouThis document addresses the comments raised by Lu et al. (2017). Lu et al. (2017) proposed an alternative numerical treatment for implementing the fully implicit friction discretization in Xia et al. (2017). The method by Lu et al. (2017) is also effective, but not necessarily easier to implement or more efficient. The numerical wiggles observed by Lu et al. (2017) do not affect the overall solution accuracy of the surface reconstruction method (SRM). SRM introduces an antidiffusion effect, which may also lead to more accurate numerical predictions than hydrostatic reconstruction (HR) but may be the cause of the numerical wiggles. As suggested by Lu et al. (2017), HR may perform equally well if fine enough grids are used, which has been investigated and recognized in the literature. However, the use of refined meshes in simulations will inevitably increase computational cost and the grid sizes as suggested are too small for real-world applications.
History
School
- Architecture, Building and Civil Engineering
Published in
Water Resources ResearchVolume
54Issue
1Pages
628 - 630Citation
XIA, X. ... et al, 2018. Reply to comment by Lu et al. on “An efficient and stable hydrodynamic model with novel source term discretization schemes for overland flow and flood simulations”. Water Resources Research, 54 (1), pp.628-630.Publisher
© American Geophysical Union (AGU)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2018Notes
This paper was published in the journal Water Resources Research and is also available at https://doi.org/10.1002/2017WR021696.ISSN
0043-1397eISSN
1944-7973Publisher version
Language
- en