Gas Turbine Engine Anomaly Detection Through Computer Simulation Technique of Statistical Correlation

Inefficiencies of compressors and turbines resulting from insufficient pressure ratio at successive blade stages in gas turbines often lead to flow reversals. A step to statistically correlate boost pressure and vibration velocity amplitude to avoid such flow reversals therefore led to the execution of this research. A computer simulation technique was used to actualize this purpose with the operational data obtained from Delta IV unit of Ughelli power station GT 18 using VC++ programming language. Results obtained show that maximum vibration manifests on each of the bearings at a pressure ratio of 9.47 for all cases considered. These results further show a linear relationship between the data using statistical z-test.