Turbine Airfoil Optimization Using Quasi-3D Analysis Codes
A new approach to optimize the geometry of a turbine airfoil by simultaneously designing multiple 2D sections of the airfoil is presented in this paper. The complexity of 3D geometry modeling is circumvented by generating multiple 2D airfoil sections and constraining their geometry in the radial dir...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2009/531358 |
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| _version_ | 1832548706728017920 |
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| author | Sanjay Goel |
| author_facet | Sanjay Goel |
| author_sort | Sanjay Goel |
| collection | DOAJ |
| description | A new approach to optimize the geometry of a turbine airfoil by simultaneously designing multiple 2D sections of the airfoil is presented in this paper. The complexity of 3D geometry modeling is circumvented by generating multiple 2D airfoil sections and constraining their geometry in the radial direction using first- and second-order polynomials that ensure smoothness in the radial direction. The flow fields of candidate geometries obtained during optimization are evaluated using a quasi-3D, inviscid, CFD analysis code. An inviscid flow solver is used to reduce the execution time of the analysis. Multiple evaluation criteria based on the Mach number profile obtained from the analysis of each airfoil cross-section are used for computing a quality metric. A key contribution of the paper is the development of metrics that emulate the perception of the human designer in visually evaluating the Mach Number distribution. A mathematical representation of the evaluation criteria coupled with a parametric geometry generator enables the use of formal optimization techniques in the design. The proposed approach is implemented in the optimal design of a low-pressure turbine nozzle. |
| format | Article |
| id | doaj-art-d9ab1a6d531c419c939345ee428d2050 |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-d9ab1a6d531c419c939345ee428d20502025-02-03T06:13:23ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742009-01-01200910.1155/2009/531358531358Turbine Airfoil Optimization Using Quasi-3D Analysis CodesSanjay Goel0University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY 12222, USAA new approach to optimize the geometry of a turbine airfoil by simultaneously designing multiple 2D sections of the airfoil is presented in this paper. The complexity of 3D geometry modeling is circumvented by generating multiple 2D airfoil sections and constraining their geometry in the radial direction using first- and second-order polynomials that ensure smoothness in the radial direction. The flow fields of candidate geometries obtained during optimization are evaluated using a quasi-3D, inviscid, CFD analysis code. An inviscid flow solver is used to reduce the execution time of the analysis. Multiple evaluation criteria based on the Mach number profile obtained from the analysis of each airfoil cross-section are used for computing a quality metric. A key contribution of the paper is the development of metrics that emulate the perception of the human designer in visually evaluating the Mach Number distribution. A mathematical representation of the evaluation criteria coupled with a parametric geometry generator enables the use of formal optimization techniques in the design. The proposed approach is implemented in the optimal design of a low-pressure turbine nozzle.http://dx.doi.org/10.1155/2009/531358 |
| spellingShingle | Sanjay Goel Turbine Airfoil Optimization Using Quasi-3D Analysis Codes International Journal of Aerospace Engineering |
| title | Turbine Airfoil Optimization Using Quasi-3D Analysis Codes |
| title_full | Turbine Airfoil Optimization Using Quasi-3D Analysis Codes |
| title_fullStr | Turbine Airfoil Optimization Using Quasi-3D Analysis Codes |
| title_full_unstemmed | Turbine Airfoil Optimization Using Quasi-3D Analysis Codes |
| title_short | Turbine Airfoil Optimization Using Quasi-3D Analysis Codes |
| title_sort | turbine airfoil optimization using quasi 3d analysis codes |
| url | http://dx.doi.org/10.1155/2009/531358 |
| work_keys_str_mv | AT sanjaygoel turbineairfoiloptimizationusingquasi3danalysiscodes |