SEISAN KENKYU
Online ISSN : 1881-2058
Print ISSN : 0037-105X
ISSN-L : 0037-105X
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Large-scale Computation of the Pump-Turbine Rotating Stall
Olivier PACOTFrançois AVELLANChisachi KATO
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2013 Volume 65 Issue 1 Pages 31-34

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Abstract

The purpose of this paper is to show the feasibility of a large-scale unsteady flow computation. This computation consists in the simulation of the rotating stall appearing into a pump-turbine operating at part load condition (Q/QBEP=76%) in pumping mode. The computations are performed using an Overset Finite Element Large Eddy Simulation (LES) code with the dynamic Smagorinsky turbulence model (DSM). To understand the onset and the propagation of the stall patterns a fine mesh is required in order to compute the small turbulence scales present in the turbulent boundary layer (TBL). In the present study such fine mesh features 8 billion elements.[This abstract is not included in the PDF]

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© 2013 Institute of Industrial Science The University of Tokyo
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