'Virtual Engine' Approach for the Coupled Analysis of Engine Structure

摘要

"Virtual Engine - Frame & Rotor" model combines engine structure models and secondary air system models into united computational environment. The model allows to account for non-axisymmetric loads and non-axisymmetric structures, including engine mount, and to improve the accuracy of numerical calculation, as results. Differently detailed models are coupled through the boundary conditions of corresponding gas-dynamic and thermomechanical problems. The general procedures, data flowcharts and model outputs are discussed. Results of the compressor blade tip radial clearance calculation are given. The tip clearance circumferential distributions due to axisymmetric and non-axisymmetric loads are shown.