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Ιδρυματικό Αποθετήριο [SANDBOX]
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
EN
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EL
| URI: | http://purl.tuc.gr/dl/dias/65B86970-134F-45D5-A019-4AAB11A3D108 | ||
| Έτος | 1993 | ||
| Τύπος | Πλήρης Δημοσίευση σε Συνέδριο | ||
| Άδεια Χρήσης |
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| Βιβλιογραφική Αναφορά | I. K. Nikolos, D. I. Douvikas, K. D. Papailiou, "A Method for the Calculation of the Tip Clearance Flow Effects in Axial Flow Compressors. Part II: Calculation Procedure," in ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition, pp. V03AT15A002. doi: 10.1115/93-GT-151 https://doi.org/10.1115/93-GT-151 | ||
| Εμφανίζεται στις Συλλογές |
An algorithm was set up for the implementation of the tip clearance models, described in Part I, in a secondary flow calculation method. A complete theoretical procedure was, thus, developed, which calculates the circumferentially averaged flow quantities and their radial variation due to the tip clearance effects.The calculation takes place in successive planes, where a Poisson equation is solved in order to provide the kinematic field. The self induced velocity is used for the positioning of the leakage vortex and a diffusion model is adopted for the vorticity distribution.The calculated pressure deficit due to the vortex presence is used, through an iterative procedure, in order to modify the pressure difference in the tip region. The method of implementation and the corresponding algorithm are described in this part of the paper and calculation results are compared to experimental ones for cascades and single rotors. The agreement between theory and experiment is good.
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