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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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| URI: | http://purl.tuc.gr/dl/dias/2C846159-39F9-4660-957B-B3241E884585 | ||
| Year | 1995 | ||
| Type of Item | Conference Full Paper | ||
| License |
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| Bibliographic Citation | I. K. Nikolos, D. I. Douvikas, K. D. Papailiou, "Theoretical Modelling of Relative Wall Motion Effects in Tip Leakage Flow", in ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition, pp. V001T01A017. doi: 10.1115/95-GT-088 https://doi.org/10.1115/95-GT-088 | ||
| Appears in Collections |
abstractThe influence of relative wall motion in modifying the leakage flow through the tip clearance is investigated. A theoretical model is developed, in order to calculate the mass flow rate through the gap.The physical mechanism by which relative wall motion affects the leakage flow is analyzed and the differences between the turbine and compressor case are identified. This model, being an extension of an already existing one, not taking into account relative wall motion, is incorporated into the tip clearance calculation procedure, already developed by the authors.Theoretical results of the complete calculation procedure (secondary flow plus tip clearance model) are compared with experimental data, for the case of compressor and turbine cascades, as well as for the case of a single rotor. Good agreement between theory and experiment is obtained.
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