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TECHNICAL PAPERS

Validation of a 3D RANS Solver With a State Equation of Thermally Perfect and Calorically Imperfect Gas on a Multi-Stage Low-Pressure Steam Turbine Flow

[+] Author and Article Information
Piotr Lampart, Stanislaw Marcinkowski, Andrzej Gardzilewicz

Institute of Fluid Flow Machinery, Polish Academy of Sciences, ul. Fiszera 14, 80-231 Gdańsk, Poland

Andrey Rusanov, Sergey Yershov

Ukrainian National Academy of Sciences, 2/10 Pozharsky, 61046 Kharkov, UkraineFLower Ltd., 42/226 Tobolskaya, 61072 Kharkov, Ukraine

J. Fluids Eng 127(1), 83-93 (Mar 22, 2005) (11 pages) doi:10.1115/1.1852491 History: Received December 11, 2003; Revised October 06, 2004; Online March 22, 2005
Copyright © 2005 by ASME
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References

Figures

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Computational grid for the five-stage LP turbine in meridional view at mid blade-to-blade distance and fragment of the grid in blade-to-blade view at mid-span
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Mass flow rate balance in blade-to-blade channels of subsequent turbine blade rows (numbers from 0.0 to 1.0 show nondimensional axial distance within subsequent blade rows)
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Computed velocity vectors at mid blade-to-blade distance
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Tip leakage flow over shrouded blades of rotor 1: velocity vectors in meridional view at mid blade-to-blade distance (left) and total pressure contours in circumferential view 25% of rotor axial chord downstream of the trailing edge (right)
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Tip leakage flow over unshrouded blades of rotor 5: total pressure contours in circumferential view 5% of rotor axial chord upstream of the rotor trailing edge (left), and 25% of rotor axial chord downstream of the trailing edge (right)
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Hub leakage flow under shrouded blades of stator 5: velocity vectors in meridional view at mid blade-to-blade distance
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Mach number contours in stages 3 and 5 in blade-to-blade view at mid-span
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Spanwise distribution of reaction in stages 3, 4, and 5
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Spanwise distribution of enthalpy losses in stages 3, 4, and 5 (the leaving energy not treated as a loss)
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Comparison of experimental and computed total and static pressure (left), meridional and swirl angle (right) downstream of stages 3 (top), 4 (center), and 5 (bottom)
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Computational domains in code FlowER—computational domain with radial gaps over unshrouded blade tips (top), computational domain with source/sink-type permeable boundaries to simulate the effect of leakage over shrouded blade tips and windage flows (bottom); S—stator, R—rotor
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LP part of 360 MW steam turbine in meridional view with measuring instrumentation
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Measuring probe inside the LP turbine downstream of the last stage rotor (top). Relative dimensions of the probe (bottom).
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Expansion line in an LP turbine for evaluation of efficiency from measurement data

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