恒流中底部浮射流稀释特性的试验研究  

Test study on the dilution characteristics of buoyant jet at the bottom of steady flow

作　　者：王鹏[1] 肖伟华[1] 纪平[1] 

机构地区：[1]中国水利水电科学研究院,北京100044

出　　处：《水力发电学报》2008年第1期79-84,共6页Journal of Hydroelectric Engineering

摘　　要：本文在总结国内具体工程问题及其所涉及的环境水域水流条件的基础上,针对流动环境中水体底层单孔口、垂直向上温排水出流问题进行了试验研究工作。通过对不同工况下排水口近区流场、温度场的模拟研究,得到了关于深层排水情况下温排水与环境水体间的掺混稀释规律。所得到的规律特征经实际工程的物模试验结果初步检验被证明可信,可作为电厂规划阶段深层排水方案温排水掺混稀释效果的估算分析方法加以采用。而且,其研究成果同样适用于其他领域类似正浮力出流掺混问题的计算分析。Based on the former research tests, physical examination is carried out in this research. By the simulation research on flow field and temperature field under different conditions, the rules of dilution ratio of deep water discharge between heated drainage and water environment are obtained. The test. results of the three dimensional flow condition and temperature field of deep water discharge can be used as scientific basis for planning of the similar outfall of power plant. The maximum penetration, velocity and density （ or temperature） at the section are analyzed and the useful dilution formula is derived in this research. A method to estimate the dilution ratio along the axes of the jet flow is presented, it is consistent with the data obtained from physical model test.

关 键 词：环境水力学 浮力射流 热污染 恒流 深层排放 试验研究 

分 类 号：X143[环境科学与工程—环境科学]