空气冷却燃气透平特性算法的研究

Study on Characteristic Calculation of Air-cooled Turbines

基于现代空气冷却燃气透平具有大冷却空气质量流量和跨音速的工作特点,对燃气透平的通流模型进行了改进,推导出适用于空气冷却燃气透平特性计算的通流模型,同时扩展了其适用范围.将通流模型和损失模型结合起来,利用所建立的性能计算公式,使用Matlab编程得到一套适用于变工况下空气冷却燃气透平特性的计算软件,并且通过多台燃气透平进行性能验证.结果表明:这套空气冷却燃气透平特性计算方法具有较高的精确性.

For the features of high cooling air flow and transonic working condition of modern gas turbines, an improvement was made to the turbine through-flow model,based on which relevant equations were derived for characteristic calculation of the air-cooled turbines,while its application scope was extended.By combining the through-flow model with a loss model,and based on the proposed characteristic calculation equations,a set of calculation software suitable for the characteristic calculation of air-cooled turbines was designed with Matlab under variable working conditions,which was verified by a number of turbines.Results show that the characteristic calculation method has relatively high precision.