In-situ observation and three-dimensional numerical simulation of cooling water discharge from Bayuquan thermal power plant
YAN Yu1, SHAO Dong-dong2, GU Wei1, YUAN Shuai3, LI Ying1, CHAO Jin-long1, LI Qian1
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
2. School of Environment & State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China;
3. China National Marine Environmental Monitoring Centre, Dalian 116023, China
Abstract：To study the thermal pollution caused by cooling water discharge from Bayuquan thermal power plant,in-situ measurements of the tidal currents and the heat diffusion in the surrounding area of the power plant were conducted in this study.Three-dimensional finite element numerical model RMA-10 was also used to simulate the three-dimensional temperature rise field caused by cooling water discharge from the power plant.The major findings are as follows:(1) The temperature distribution is significantly affected by the cooling water discharge.The model predicted average area with over 1℃ and 4℃ temperature rise in the surface is 0.648 km2 and 0.199 km2,respectively; (2) The extent of cooling water discharge appears to correlate directly with the tidal currents.Over a tidal cycle,the extent of the thermal plume during the low tide is larger than that during the high tide; (3) The vertical distribution of temperature rise is not uniform,and the area with temperature rise in the surface is 2 to 4 times larger than in the bottom,suggesting that cooling water diffuses mainly in the upper layer due to the buoyancy effect.As such,the commonly used two-dimensional model may not be suitable for simulating cooling water discharge,and three-dimensional model is preferable in such a case.
YAN Yu,SHAO Dong-dong,GU Wei et al. In-situ observation and three-dimensional numerical simulation of cooling water discharge from Bayuquan thermal power plant[J]. Marine Environmental Science, 2016, 35(4): 571-579.
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