Open Access

ARTICLE

Numerical Study on the Leakage and Diffusion Characteristics of Low-Solubility and Low-Volatile Dangerous Chemicals from Ship in Inland Rivers

Shuifen Zhan^{1, 2, 3}, Mingchao Wang^{2, *}, Min Wang^{5, *}, Qianqian Shao⁴, Zefang Zhang³, Wenxin Jiang², Xuemin Chen¹

1 Lanzhou Jiaotong University, Lanzhou, 730070, China.
2 Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin, 300456, China.
3 Tianjin Dongfang Tairui Technology Co. Ltd., Tianjin, 300192, China.
4 Guangdong University of Petrochemical Technology, Maoming, 525000, China.
5 Beijing Computational Science Research Center, Beijing, 100193, China.

* Corresponding Authors: Ming Wang. E-mail: ;
  Mingchao Wang. Email: .

(This article belongs to the Special Issue: Advances in Modeling and Simulation of Complex Heat Transfer and Fluid Flow)

Computer Modeling in Engineering & Sciences 2020, 123(1), 217-235. https://doi.org/10.32604/cmes.2020.08289

Received 13 August 2019; Accepted 28 November 2019; Issue published 01 April 2020

Abstract

Considering the accidents of ships for dangerous chemicals transportation in inland rivers, a numerical method for the simulation of the leakage and diffusion processes of dangerous chemicals in inland rivers is proposed in this paper. Geographic information, such as rivers and buildings in the model, is obtained through Google Earth and structures of rivers and buildings are described by Auto CAD. In addition, the Fluent is adopted to simulate the leakage and diffusion processes of the dangerous chemicals where the standard k-ε model is used to calculate the turbulent flow. Considering the interaction between chemicals and water, the VOF method is used to describe the leakage, drift and diffusion process of dangerous chemicals groups on the water surface. Taking a section of the Yangtze River as an example, the leakage and diffusion processes from a ship carrying 3,000 tons of low-solubility and low-volatile dangerous chemicals are studied, and the characteristics of leakage and diffusion are analyzed in detail. During the simulation, the area of the maximum group of leaked dangerous chemicals reaches up to about 1800 m² , and the number reaches up to 45. Furthermore, the influence of density, viscosity, water velocity and leakage velocity on the leakage and diffusion processes is investigated in this paper.

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