Abstract
The article presents the implementation of CFD/FEM approach for real oil tank of the gas turbine engine for the purposes of prediction of the component behavior under the local impact of a burner jet. The model takes into account heat and mass transfer problems as well as strength problems that are solved using a one way coupled fluid-structure interaction method. Results of the blind test simulation are compared and show good agreement with available experimental data.
Highlights
One of the key requirements for gas-turbine engines (GTE) is their operation safety in various modes, including emergency situations, such as fires
Fire safety of GTE is regulated by the Federal Aviation Regulation Part 33.17 [1], according to which all components of GTEs containing flammable liquids must meet at least fire resistance requirements
Two discrete models replicating the structure of the real component and fire test environment were developed for the numerical solution of the problem: (i) Finite volume model (FVM), with 44 million cells, to solve the problem of conjugate heat transfer, developed on the basis of trimmed hexagonal cells. 16
Summary
One of the key requirements for gas-turbine engines (GTE) is their operation safety in various modes, including emergency situations, such as fires. The experimental approach shows all possible mechanisms of destruction of the component (melting, thermal decomposition, combustion, etc.) This approach provides limited information on the test object behavior and requires significant costs for manufacturing a material part and conducting experiments. The most promising and accurate approach is based on coupled CFD-FEM analysis of the component behavior under fire-resistance tests. Detailed description of this approach can be found in the research of Prieler et al [3, 4] and Malendowski [5]. Certification authority was testing real oil tank produced based on shared CAD geometry
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