摘要
以某型高压九级轴流压气机为研究对象,以设计条件下的性能参数作为参考,对试验条件下的计算数据进行了雷诺数修正,并提出了修正方法优化方案。首先,基于Wassell修正方法对1.0额定转速的设计压比下的转速点进行修正,评估了该方法对样机的有效性;然后,对试验进口条件整条流量—压比、流量—效率特性线进行修正,对比修正结果与参考结果后,重新拟合特性线,旨在找出适合该样机的Wassell修正系数;在重新调整了修正系数后,对1.0额定转速转速特性线进行了二次修正,并以二次修正方法为准则对该样机的0.9额定转速和0.8额定转速进行修正,以校核该方法对这两个转速的通用性;最后,应用二次修正公式得到数据与样机实测数据点数值进行对比。效率修正的相对误差仅为0.024%,说明二次修正方法得到数值吻合度更好、预估准确性较好,方法合理有效。
Taking a certain high pressure 9-stage axial flow compressor as the research object, referring to the performance parameters under the design condition, the Reynolds number of the calculation data under the test condition is corrected, and the optimization scheme of correction method is put forward. Firstly, the rotational speed point of 1.0 N design pressure ratio is modified based on Wassell correction method, and the effectiveness of the method for the prototype is evaluated. Then, the whole flow-pressure ratio and flow-efficiency characteristic lines under the test inlet conditions are corrected. After comparing the correction results with the reference results, the characteristic line is refitted to find out the Wassell correction coefficient suitable for the prototype. After readjusting the correction coefficient, the characteristic curve at 1.0 N speed is corrected twice. The 0.9 N and 0.8 N of the prototype are modified by the secondary correction method to check the generality of the method for the two speeds. Finally, the relative error of efficiency correction is only 0.024% by comparing the data obtained by the secondary correction formula with the measured data of the prototype, which shows that the secondary correction method has better numerical consistency, prediction accuracy, rationality and effectiveness.
作者
吴思宇
王廷
夏凯
李沛泽
WU Si-yu;WANG Ting;XIA Kai;LI Pei-ze(No.703 Research Institute of CSSC,Harbin,China,150078;Wuxi Branch of No.703 Research Institute of CSSC,Wuxi,China,214151)
出处
《热能动力工程》
CAS
CSCD
北大核心
2022年第6期54-60,共7页
Journal of Engineering for Thermal Energy and Power
基金
国家科技重大专项(2017-Ⅱ-0006-0019)。
关键词
特性计算
雷诺数修正方法
策略优化
压气机
characteristic calculation
Reynolds number correction method
strategy optimization
compressor
