摘要
为了正确预测热污水排放在受纳水域的掺混扩散规律,采用考虑浮力的雷诺应力紊流模型(RSM)对不同排放口长宽比的情况进行了三维紊流数值模拟,应用颗粒成像系统(PIV)和红外热像仪系统测得的热污水表面横向侧排试验流场和温度场作为验证.计算结果和试验结果吻合较好,表明所采用的三维紊流数学模型具有较高的精度.排放口长宽比对热污水表面侧排近区特性有较大的影响,并且扩散宽度和排放口的长宽比具有良好的相关关系.
In order to study the mixing and diffusing patterns of thermal wastewater in receiving waters, the Reynolds Stress Model （RSM） considering buoyant effects was used to simulate the three-dimensional near-field behavior of thermal wastewater. Measured flow and temperature fields using particle image velocimetry （PIV） system and infrared thermal imaging system were used for model validation. The simula- ted results agree well with the experimental data, indicating that the three-dimensional buoyant model has satisfied precision. The results show that the length-width ratio of discharge outlet has significant effects on the near-field behavior of thermal wastewater, and has good correlation with the diffusion width of thermal wastewater.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2007年第2期151-155,共5页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(50579015)
关键词
热污水
雷诺应力模型
排放口长宽比
近区特性
数值模拟
thermal wastewater
Reynolds Stress Model （RSM）
length-width ratio of discharge outlet
near-field behavior
numerical simulation
