径流式氨水混合工质透平热力设计和数值模拟  

Thermodynamic Design and Numerical Simulation of a Radial-flow Turbine for Ammonia-Water Mixture

作　　者：程梓洋 王建永[1] 肖波 曹越 吴闯 王江峰[1] CHENG Zi-yang;WANG Jian-yong;XIAO Bo;CAO Yue;WU Chuang;WANG Jiang-feng(Institute of Turbomachinery,Xi'an Jiaotong University,Xi'an 710049,China;Guodian Hanchuan Power Generation Co.,Ltd.,Hanchuan 431614,Hubei Province,China;School of Energy and Power Engineering,Southeast University,Nanjing 211189,China;School of Energy and Power Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]西安交通大学叶轮机械研究所,西安710049 [2]国电汉川发电有限公司,湖北汉川431614 [3]东南大学能源与环境学院,南京211189 [4]重庆大学能源与动力工程学院,重庆400044

出　　处：《动力工程学报》2023年第1期7-13,共7页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51976147);陕西省杰出青年基金资助项目(2021JC-05)。

摘　　要：为了更好地研究氨水混合工质透平,提升Kalina循环系统整体性能,对径流式氨水混合工质透平进行了一维热力学设计,并使用BladeGen、TurboGrid和ANSYS CFX软件进行三维数值模拟;将一维和三维建模方法分别与参考文献案例进行对比验证,并比较了透平一维热力计算与三维模型数值模拟的结果。结果表明:径流式氨水混合工质透平的性能通过热力设计模型估算,可大幅降低计算成本;透平一维热力计算与三维模型数值模拟得到的参数基本一致,所得透平等熵效率分别为84.67%和88.75%;工质在透平流道内流动均匀且无明显旋涡。To better understand the ammonia-water mixed working fluid turbine and improve the circulatory system and overall performance of the Kalina system,a one-dimensional thermodynamic design of the turbine was conduced.The BladeGen,TurboGrid and ANSYS CFX software were used for three-dimensional model numerical simulations.One-and three-dimensional methods were compared with the case in the reference,then the results of one-dimensional thermodynamic calculation and three-dimensional model numerical simulation of the turbine were compared.Results show that the performance of the radial-flow ammonia-water mixture turbine can be accurately estimated using the thermal design model,which could greatly reduce the calculation cost.The parameters of the turbine obtained by one-dimensional thermodynamic calculation and three-dimensional model simulation are basically the same,and the isentropic efficiencies of the two methods are 84.67%and 88.75%respectively.In the flow path,the fluid flow presents smoothly and uniformly working while in absence of any vortex.

关 键 词：径流式透平 氨水混合工质 热力设计 KALINA循环 数值模拟 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]