Session: 37-11 Combustors Design Methods

Paper Number: 82419

82419 - A Numerical Study on the Effects of Circumferential Positions of Combustor Hot Streaks on a TCF Configuration 

This work presents the results of numerical investigations conducted within the framework of a project focused on studying the influence of combustor hot streaks onto the aerodynamic performance of a turbine centre frame (TCF) representative geometry. Different circumferential positions of the hot streaks, in respect to the leading edges of the high-pressure turbine (HPT) stator vanes, were examined to determine their influence on the flow field and the downstream components. Numerical investigations were carried out at Bionic Surface Technologies GmbH using the commercial tool ANSYS CFX. Transient simulations were performed in order to reproduce the flow-field and capture the propagation of the hot streaks through the HPT stage into the TCF. Time averaged five hole-probe measurements, taken from the TU Graz  transonic test turbine facility (TTTF), were used as the initial boundary conditions for the simulations. Results are showing that the circumferential position of the hot streaks influences the temperature distribution at the TCF outlet since the hot streaks follow the fluid migration in the TCF and are therefore affected by secondary flow structures originating from the fluid interaction with the HPT and TCF struts. Results also present an increase of pressure loss below 1%, for the hot streaks simulations.

Presenting Author: Richard Benauer Bionic Surface Technologies GmbH

Presenting Author Biography: Richard Benauer currently works as a Project Manager &amp; Senior CFD Engineer at Bionic Surface Technologies GmbH. His main field of research are CFD simulations with the focus on turbo machinery.<br/>He received his MSc. in Mechanical Engineering in 2017 from Graz University of Technology.

Authors:

Richard Benauer Bionic Surface Technologies GmbH
Stefan Schreck Bionic Surface Technologies GmbH
Peter Leitl Bionic Surface Technologies GmbH
Ena Badžek Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology
Marios Patinios Turbomachinery and Propulsion Department, von Karman Institute for Fluid Dynamics
Federica Farisco Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), German Aerospace Center, Institute of Combustion Technology