Numerical simulation on cold water discharge of Nanshan LNG project in Longkou. Issue 1 (December 2020)

• Record Type: Journal Article
• Authors: Yao, S S; Zhang, Z
• Is Part Of: IOP conference series. Volume 612:Issue 1(2020)
• Publication Date: 2020-12
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/612/1/012055
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Taking Nanshan LNG project as background, a 2-D numerical model based on the hydrodynamics and advection-diffusion equation is used to simulate the tidal current field and temperature diffusion caused by the cold water discharge, the distribution of temperature diffusion is predicted, the envelope area of the maximum temperature drop and the temperature drop of water intake are counted. Calculating results show that: (1) tidal current shows a typical reciprocating characteristic in the project area, the outlet is located in the shallow reef area south of the breakwater, with the background velocity less than 0.2m/s; (2) the temperature diffusion distance along the north-south direction is longer than that in the east-west direction. The maximum envelope area of temperature drop more than1°C is less than 0.25km 2 ; (3) Cold water discharge has little effect on the inlet, and the maximum temperature drop at the inlet is 0.68°C, so the layout of outlet is reasonable and feasible. The conclusions can provide technical support to the local government for decision-making.