FORCED RESPONSE CALCULATION USING TWIN APPROACH

摘要

This paper focuses on the numerical and experimental analysis of the forced response in turbomachinery. A new numerical methodology called TWIN approach is proposed which does not rely on the superposition principle of forces and it can handle the non-linear blade-row-interactions. It's performance is evaluated through a low pressure compressor BluM™ excited by low engine excitations. To verify the superposition principle, a Decoupled approach is also employed. Extensive experiments are carried out to investigate the accuracy and reliability of the method. A detailed analysis of the results obtained from TWIN and Decoupled approaches is presented and the estimated forced response are compared with measurement.