摘要
针对反渗透海水淡化提升泵效率的问题,在已有水力模型基础上,设计出3种水力模型方案。运用Fluent软件,采用多参考坐标系,基于雷诺时均的N-S方程和标准k–ε湍流模型,对3种水力模型的内部流场进行数值模拟与性能预测;基于预测的结果,选取一组性能符合要求,效率最高的模型方案制作成模型泵,并进行试验研究。性能预测和模型试验结果表明:预测值与试验值总体吻合较好,其中预测扬程与试验扬程在设计工况点比较接近,偏离设计工况点存在一定误差;通过理论计算优选后得到的水力模型实际泵效率为81.3%,达到了海水淡化泵的效率要求。
With a view to solving the problems relating to the efficiency of booster pumps for reverse osmosis sea water desalination,designed were three hydraulic model versions on the basis of the currently available models.By employing software Fluent and multiple reference coordinates,and based on the Renault time-averaged N-S equation and standard k-ε turbulent flow model,a numerical simulation and performance prediction were preformed of the inner flow fields in the three hydraulic models.On the basis of the prediction results,a model pump was manufactured by choosing a model scheme meeting the performance requirements and having the highest efficiency.Furthermore,an experimental study was conducted.The performance prediction and model test results show that the prediction values are in relatively good agreement with the test ones on a comprehensive basis,among which,the predicted head is relatively close to the test one under the design operating conditions but a certain error still exists under the off-design operating conditions.The real efficiency of the pump manufactured by using the hydraulic model and optimized through a theoretical calculation reaches 81.3%,meeting the requirement for the efficiency of a sea water desalination pump.
出处
《热能动力工程》
CAS
CSCD
北大核心
2011年第2期244-247,258,共4页
Journal of Engineering for Thermal Energy and Power
基金
国家科技支撑计划基金资助项目(2006BAB03A02)
江苏省高新技术计划基金资助项目(BG2006024)
关键词
海水淡化
提升泵
效率
性能预测
误差
sea water desalination
booster pump
efficiency
performance prediction
error
作者简介
胡敬宁（1962-），男，安徽望江人，江苏大学教授．
