Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)

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Study on Mathematical Models of Grid Turbulence

Authors
Junfeng Han1, *, Zhijing Li1, Yinjun Zhou1, Huali Wu1
1Changjiang River Scientific Research Institute, Wuhan, 430010, China
*Corresponding author. Email: 2249387658@qq.com
Corresponding Author
Junfeng Han
Available Online 30 December 2023.
DOI
10.2991/978-94-6463-336-8_34How to use a DOI?
Keywords
Grid turbulence; Suspended sediment concentration; Numerical simulation
Abstract

The process of sediment initiation is sometimes caused by high-intensity turbulence. Grid turbulence can effectively simulate the sediment movement under such special flow conditions. In this paper, the governing equations of the turbulence model are determined based on the large eddy simulation model of two-fluid spatial filtration of the level set. The level set model is established, and the fluctuation of the free water surface is tracked by the level set function method. The density and viscosity of the whole computational domain are set as constant values. The single-fluid equation is reconstructed to solve the level set convection equation. The viscous sediment model is integrated into the SCHISM simulation system. The SCB model is used to deal with the fluid-structure interaction problem in the flocculating and settling process of fine sediment. The split-step method is used to solve the fluid equation, which is finally solved, and the numerical simulation results are output. The results show that the mathematical model can simulate the flow velocity field and suspended sediment concentration field well under grid turbulence.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
Series
Advances in Engineering Research
Publication Date
30 December 2023
ISBN
978-94-6463-336-8
ISSN
2352-5401
DOI
10.2991/978-94-6463-336-8_34How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Junfeng Han
AU  - Zhijing Li
AU  - Yinjun Zhou
AU  - Huali Wu
PY  - 2023
DA  - 2023/12/30
TI  - Study on Mathematical Models of Grid Turbulence
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 308
EP  - 314
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_34
DO  - 10.2991/978-94-6463-336-8_34
ID  - Han2023
ER  -