A study on energy norm as an Alternate approach to mesh Convergence on circumferential disk Dovetail of aircraft engine Compressor

Naik, Nithesh and Bhat, Rithesh and Shenoy, Prajwal and George, Varghese and Kowshik, Suhas C S (2018) A study on energy norm as an Alternate approach to mesh Convergence on circumferential disk Dovetail of aircraft engine Compressor. International Journal of Mechanical Engineering and Technology, 9 (13). pp. 1293-1301. ISSN 0976-6340

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Abstract

Finite element methods solve complicated computational problems, which requires optimized input data to obtain a converged solution to the problem and arrive at accurate results from simulations. However, the calculations obtained by interpolations of derivatives at the nodes result in mesh discretization error. It is observed that the increase in the mesh density the reduces the error, Hence, in the current study, finite element analysis of the complicated models related to gas turbines is performed with the mesh density being increased iteratively, to observe the trend of convergence of the solution along with the error associated. In the current study, dovetail shaped axisymmetric model present in aircraft engine compressor disks for mounting the compressor blades along the disk periphery is modelled using software CATIA® and analysis is carried out using ANSYS®. The results showed the response of peak stress values in correspondence to energy error showing that the energy norm error can be used as criteria for testing the convergence of the solution. The study shows that normalized percentage error in energy is in the range of 6% to 8% for the converged solution

Item Type: Article
Uncontrolled Keywords: High-pressure turbine, Compressor, Mesh convergence, Energy norm, FEM.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Engineering > MIT Manipal > Mechatronics
Depositing User: MIT Library
Date Deposited: 15 Jan 2019 09:04
Last Modified: 15 Jan 2019 09:04
URI: http://eprints.manipal.edu/id/eprint/152958

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