Session: 24-04 Forced response

Paper Number: 82427

82427 - Application of Machine Learning to Forced Response Predictions of an Industrial Axial Compressor Rotor Blade 

Machine learning has gone way beyond a ground-breaking technology a few decades ago to now taken for granted in many day-to-day activities. It is now providing new ways for manufacturing, assembling, operating, monitoring, and maintaining products. Typical application areas include performance optimisation, quality improvements, fault detection and predictive maintenance. In this paper application of machine learning algorithms to forced response prediction during the design and analysis of a typical gas turbine compressor blade is reported. The forced response prediction process typically involves utilising harmonic or time domain CFD solvers to compute the forcing and the aero damping to calculate reserve factors that represents the life of the blade. This time-consuming process is generally limited to the later phases of the design cycle and can lead to hundreds of calculations if one must address all the resonances in a typical twin shaft running range. A neural network trained using historical data is used to directly predict the reserve factor with high confidence without the need for costlier high fidelity CFD by using just the FE predicted parameters. This allows to perform high-fidelity aero-mechanical assessment at an early stage in the design process. Further, application of image recognition using a convoluted neural network to aid in the identification of FE predicted Modeshapes is also demonstrated, which can also improve the accuracy of the reserve factor predictions.

Presenting Author: Giuseppe Bruni Siemens Energy

Presenting Author Biography: Senior Aerodynamicist<br/>Siemens Energy Industrial Turbomachinery Ltd, Lincoln: 2016-Today<br/>Compressor aerodynamicist with experience in aerodynamic design and analysis, aero-mechanical analysis, tools development and machine learning applications.<br/><br/>Academic Background:<br/>Cranfield University - Gas Turbine Technology (Thermal Power) MSc: 2015-2016<br/>Thesis: Multi Objective Optimisation of Short Intakes, Rolls-Royce UTC<br/>University of Padova - Mechanical Engineering - MSc: 2014-2016<br/>University of Padova - Mechanical Engineering- BSc: 2011-2014<br/>Thesis: Design and CFD simulation of a contra-rotating axial fan

Authors:

Giuseppe Bruni Siemens Energy
Senthil Krishnababu Siemens Energy
Simon Jackson Siemens Energy