Publication: Stability analysis of a gas turbine exhaust stack
No Thumbnail Available
Date
2010
Authors
Hamzah M.Z.
Purbolaksono J.
Inayat-Hussain J.I.
Nordin N.F.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Stability analysis, based on finite element method, was carried out on a gas turbine exhaust stack following obvious appearances of significant gaps between its silencer casings and embracing rings. The finite element model was developed by referring to the corresponding technical drawing of the exhaust stack and the information obtained during the site inspection. In the case of axial constraint at both ends of the exhaust stack, the original design was found incapable of withstanding the thermal loading experienced during operation of the gas turbine, leading to instability of the structure. A design modification of the exhaust stack was proposed to rectify this problem. The outcome of the finite element analysis indicated that the modified design of the exhaust stack had improved stability as compared to the original design when subjected to typical thermal loading of the gas turbine operation. � 2010 Elsevier Ltd.
Description
Keywords
Deformation , Finite element , Gas turbine , Site inspection , Stress analysis , Deformation , Design , Gas turbines , Gases , Inspection , Stability , Stress analysis , Thermal load , Thermal stress , Turbomachinery , Ventilation exhausts , Design modifications , Exhaust stacks , Finite Element , Finite element analysis , Finite element models , Gas turbine exhausts , Modified designs , Original design , Site inspection , Stability analysis , Technical drawing , Thermal loadings , Finite element method