变几何涡轮蛤壳状导叶的气动性能数值模拟分析  

Numerical simulation analysis on the aerodynamic performance of variable geometry turbine clamshell guide vanes

作　　者：汤涛[1] 李彦静 宋义康 高杰[2] TANG Tao;LI Yanjing;SONG Yikang;GAO Jie(China Ship Development and Design Center,Wuhan 430064,China;College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《中国舰船研究》2022年第2期212-219,共8页Chinese Journal of Ship Research

基　　金：国家科技重大专项资金资助项目(2017-III-0010-0036);黑龙江省自然科学基金优秀青年基金资助项目(YQ2020E024);中央高校基本科研业务费专项资金资助项目(3072020CFT0304)。

摘　　要：[目的]为了提升燃气轮机的工作性能,开展变几何涡轮蛤壳状导叶的气动性能研究工作。[方法]以某典型变几何涡轮导叶为原型,构建导叶压力侧固定且吸力侧旋转的涡轮蛤壳状导叶模型。基于剪切应力传输(SST)模型进行数值模拟,分析涡轮蛤壳状导叶和普通变几何涡轮导叶在不同工作状态下的参数变化规律。[结果]计算结果表明:当导叶旋转角为+3°~–3°时,涡轮蛤壳状导叶的气动性能具备一定优势,其流量更大且总压损失系数更小;当导叶旋转角超过+3°时,其流量增幅将明显减小,甚至出现停止增长或负增长的趋势;当吸力面的旋转角由负角度逐渐增加到0°时,总压损失系数将逐渐减小;当旋转角大于0°时,总压损失系数将随着旋转角的增加而增加。[结论]涡轮蛤壳状导叶可以在一定程度上改善涡轮的气动性能。[Objectives]In order to improve the working performance of gas turbines,this study examines the aerodynamic performance of variable geometry turbine clamshell guide vanes.[Methods]Taking a typical variable geometry turbine guide vane as a prototype,a clamshell turbine guide vane model with a fixed pressure side and rotating suction side is constructed.Numerical simulation based on the shear-stress transport(SST)model is then carried out to analyze the parameter variation laws of the clamshell turbine guide vane and ordinary variable geometry turbine guide vane under different working conditions.[Results]As the calculation results show,when the rotation angle of the guide vane varies from+3°to–3°,the aerodynamic performance of the clamshell turbine guide vane has certain advantages,a larger flow rate and a smaller total pressure loss coefficient.When the guide vane rotation angle exceeds+3°,its flow rate increase will decrease significantly and even stop or negatively increase.When the rotation angle of the suction surface gradually increases from a negative angle to 0°,the total pressure loss coefficient will gradually decrease.When the rotation angle is greater than 0°,the total pressure loss coefficient will increase with the rotation angle.[Conclusions]The adoption of clamshell turbine guide vanes can improve the aerodynamic performance of turbines to a certain extent.

关 键 词：燃气轮机 变几何涡轮 蛤壳状导叶 气动性能 数值模拟 

分 类 号：U664.131[交通运输工程—船舶及航道工程]