江水源热泵系统尾水排放试验模型的数值模拟
来源期刊：中南大学学报(自然科学版)2012年第10期
论文作者：卿晓霞 张景尧 周健 于玲玲
文章页码：4148 - 4152
关键词：江水源热泵系统；温度扩散；数值模拟
Key words：river water source heat pump system; temperature diffusion; numerical simulation
摘 要：为研究江水源热泵系统尾水排放在江河水域中的温度扩散规律，通过建立流体控制方程，采用Fluent软件的有限体积法，对江水源热泵系统尾水排放物理试验模型的温度进行数值模拟。结果表明：尾水排放对排放口下游近水域的上层水体产生一定影响，对中层水体的影响较小，对下层水体基本没影响；从排放口到河道下游，水温逐渐降低且趋势较为缓慢；沿河道水深方向引起的水温变化较小，且受影响程度逐层递减。物理试验模型温度实测数据与数值模拟结果的误差分析表明：实测温度与数值模拟计算值的吻合性较好，相对误差在1.73%以内。
Abstract: In order to investigate the temperature distribution regulation of thermal discharge of river water source heat pump system, the flow control equation was set up and finite volume method of Fluent software was used, and the temperature of tail water discharge physical test model for river water source heat pump system was simulated numerically. The results show that the discharged tail water mainly influences on upper water at discharge outlet of river , and has little influence on middle water, and almost does nothing on bottom water. Water temperature is reduced gradually from discharge outlet to lower river, from upper layer to bottom layer. The absolutely relative error between the actual test temperatures by the physical test model and the numerical simulation results are within 1.73%, which means these two kinds of results have good agreement.
卿晓霞，张景尧，周健，于玲玲
(重庆大学 三峡库区生态环境教育部重点实验室，重庆，400044)
摘 要：为研究江水源热泵系统尾水排放在江河水域中的温度扩散规律，通过建立流体控制方程，采用Fluent软件的有限体积法，对江水源热泵系统尾水排放物理试验模型的温度进行数值模拟。结果表明：尾水排放对排放口下游近水域的上层水体产生一定影响，对中层水体的影响较小，对下层水体基本没影响；从排放口到河道下游，水温逐渐降低且趋势较为缓慢；沿河道水深方向引起的水温变化较小，且受影响程度逐层递减。物理试验模型温度实测数据与数值模拟结果的误差分析表明：实测温度与数值模拟计算值的吻合性较好，相对误差在1.73%以内。
关键词：江水源热泵系统；温度扩散；数值模拟
QING Xiao-xia, ZHANG Jing-yao, ZHOU Jian, YU Ling-ling
(Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment of Ministry of Education,
Chongqing University, Chongqing 400044, China)
Abstract:In order to investigate the temperature distribution regulation of thermal discharge of river water source heat pump system, the flow control equation was set up and finite volume method of Fluent software was used, and the temperature of tail water discharge physical test model for river water source heat pump system was simulated numerically. The results show that the discharged tail water mainly influences on upper water at discharge outlet of river , and has little influence on middle water, and almost does nothing on bottom water. Water temperature is reduced gradually from discharge outlet to lower river, from upper layer to bottom layer. The absolutely relative error between the actual test temperatures by the physical test model and the numerical simulation results are within 1.73%, which means these two kinds of results have good agreement.
Key words:river water source heat pump system; temperature diffusion; numerical simulation
