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Probabilistic CFD Simulation of a High-Pressure Compressor Stage Taking Manufacturing Variability Into Account

[+] Author Affiliations
Alexander Lange, Matthias Voigt, Konrad Vogeler

Technische Universität Dresden, Dresden, Germany

Henner Schrapp, Erik Johann, Volker Gümmer

Rolls-Royce Deutschland Ltd. & Co. KG, Blankenfelde-Mahlow, Germany

Paper No. GT2010-22484, pp. 617-628; 12 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 6: Structures and Dynamics, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4401-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by Rolls-Royce Deutschland Ltd. & Co KG


The present paper addresses a non-deterministic CFD simulation of a high-pressure compressor (HPC) stage. The investigation focuses on the determination of the influence of the manufacturing scatter of compressor blades on the aerodynamic performance of the analyzed HPC stage. A set of 150 blades was scanned using an optical 3D digitizer to obtain a three-dimensional point cloud representing the surface of the blades. Classical profile parameters were identified at several sections of constant spanwise coordinate. The radial stacking of these parameters forms a parameter vector that constructs the airfoil model of each scanned blade. Consequently these parameters were used to define the geometric variability of the entire measured blade set. A statistical analysis of the distribution of these parameters defines the input data of the probabilistic 3D CFD simulation. The Monte-Carlo method is used to identify the scatter of the performance values of the HPC stage and their sensitivity to the geometric variability of profile parameters.

Copyright © 2010 by Rolls-Royce Deutschland Ltd. & Co KG



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