A Navier-Stokes time-accurate solver has been extended to the analysis of unsteady rotor-stator interaction. In the proposed method, a fully-implicit time discretization is used to remove stability limitations. A four-stage Runge-Kutta scheme is used in conjunction with several accelerating techniques typical of steady-state solvers, instead of traditional time-expensive factorizations. Those accelerating strategies include local time stepping, residual smoothing, and multigrid. Direct interpolation of the conservative variables is used to handle the interfaces between blade rows. Two-dimensional viscous calculations of unsteady rotor-stator interaction in a modern gas turbine stage are presented to check for the capability of the procedure.

Multigrid Computations of Unsteady Rotor–Stator Interaction Using the Navier–Stokes Equations / Andrea Arnone; Roberto Pacciani; Alessandra Sestini. - STAMPA. - 40:(1994), pp. 87-96. (Intervento presentato al convegno International Mechanical Engineering Congress and Exposition tenutosi a Chicago, IL, USA nel 6 November 1994 through 11 November 1994).

Multigrid Computations of Unsteady Rotor–Stator Interaction Using the Navier–Stokes Equations

ARNONE, ANDREA;PACCIANI, ROBERTO;SESTINI, ALESSANDRA
1994

Abstract

A Navier-Stokes time-accurate solver has been extended to the analysis of unsteady rotor-stator interaction. In the proposed method, a fully-implicit time discretization is used to remove stability limitations. A four-stage Runge-Kutta scheme is used in conjunction with several accelerating techniques typical of steady-state solvers, instead of traditional time-expensive factorizations. Those accelerating strategies include local time stepping, residual smoothing, and multigrid. Direct interpolation of the conservative variables is used to handle the interfaces between blade rows. Two-dimensional viscous calculations of unsteady rotor-stator interaction in a modern gas turbine stage are presented to check for the capability of the procedure.
1994
Conference Proceedings
International Mechanical Engineering Congress and Exposition
Chicago, IL, USA
6 November 1994 through 11 November 1994
Andrea Arnone; Roberto Pacciani; Alessandra Sestini
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/877322
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