Abstract
Mechanical deflections of a thin sheet metal, notional multi-lobed mixer were investigated using computational fluid dynamics (CFD) and finite element structural analysis. The computational model was set up as a steady state one-way fluid structure interaction (FSI) problem. For a typical sheet metal alloy, such as Inconel 718, the analysis was performed using ANSYS Workbench suite of analytical tools. The setup consisted of a typical exhaust system of a gas turbine engine, composed of the mixer geometry in a convergent nozzle at chocked conditions. Maximum deflections due to thermal and aerodynamic loads were computed and found to be significant reaching maximum values of 0.1 inches for a 7.5 inch lobe diameter. Aerodynamic loads were found to impose mostly compressive stresses on the geometry, although this was offset by the thermal expansion of the material.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
