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| Title | The Impact of Gas Modeling in the Numerical Analysis of a Multistage Gas Turbine |
| Publication Type | Conference Proceedings |
| Year of Publication | 2006 |
| Authors | Rubechini F, Marconcini M, Arnone A, Maritano M, Cecchi S |
| Conference Name | ASME Turbo Expo 2006: Power for Land, Sea, and Air |
| Volume | 6: Turbomachinery, Parts A and B |
| Pagination | 531-539 |
| Date Published | 05/2006 |
| Publisher | ASME |
| Conference Location | Barcelona, Spain, May 8–11, 2006 |
| ISBN Number | 0-7918-4241-X |
| Accession Number | WOS:000242494000051 |
| Other Numbers | Scopus 2-s2.0-33750889613 |
| Abstract | In this work a numerical investigation of a four stage heavy-duty gas turbine is presented. Fully three-dimensional, multistage, Navier-Stokes analyses are carried out to predict the overall turbine performance. Coolant injections, cavity purge flows and leakage flows are included in the turbine modeling by means of suitable wall boundary conditions. The main objective is the evaluation of the impact of gas modeling on the prediction of the stage and turbine performance parameters. To this end, four different gas models were used: three models are based on the perfect gas assumption with different values of constant cp , and the fourth is a real gas model which accounts for thermodynamic gas properties variations with temperature and mean fuel/air ratio distribution in the through-flow direction. For the real gas computations, a numerical model is used which is based on the use of gas property tables, and exploits a local fitting of gas data to compute thermodynamic properties. Experimental measurements are available for comparison purposes in terms of static pressure values at inlet/outlet of each row and total temperature at the turbine exit. |
| URL | http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1587534&resultClick=1 |
| DOI | 10.1115/GT2006-90129 |
| Refereed Designation | Refereed |
