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Numerical model of viscous turbulent flow in "inlet - pipe 1st stage" compartment of power steam turbine

Solodov V. G., Starodubtsev Yu. V.

Transactions of the Institute of Fluid-Flow Machinery

2003

nr 114

191-200

The paper describes 3D numerical model and some results of numerical simulation of viscous turbulent flow in 'Inlet Pipe - 1st Stage" compartment of large power steam turbine.

The Gas dynamics of the exhaust diffusers: computational aspects

Solodov V. G.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2001

Vol. 5, No 4

495-517

Some recent advances in computational gas dynamics of exhaust diffusers are presented. The compressor/turbine axial-radial exhaust diffusers and outlet devices of compressor/turbine units, exhaust hoods for power steam turbines are considered. The peculiarities of gas dynamics of the above mentioned devices are discussed. The formulations of problems for CFD analysis of these devices are discussed including the coupling procedure for joint operation of the last stage and exhaust hood. The numerical method and the implementation of a differential turbulence model are described. The new approach to the description of computational domain and parallel numerical solution of transport equations based on the unstructured set of structured grid blocks is also presented.

Spatial unsteady flow pattern in an old-design 200MW turbine exhaust hood and ways of its improvement

Gardzilewicz A., Solodov V.G.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1999

nr 115

139--148

The numerical investigation of flow through the exhaust hood of a 200MW turbine under modernization is presented for a wide range of operational regimes and geometrical modifications. The solver applied is based on inviscid and non-heat conductive vapour, which is simulated as perfect gas of equivalent specific heat ratio. The calculation domain consists of axial-radial diffuser and space under casing including the intermediate chamber, the transversal and longitudinal walls, etc. The experience of such modelling and typical flow structures in the exhaust hood are discussed under consideration of various peculiarities of geometry.

Numerical approach to study the non-stationary flow phenomena in exhaust hood compartment -- last stage of steam turbine

Solodov V.G.

Transactions of the Institute of Fluid-Flow Machinery

1999

nr 105

33-45

The paper describes 3D numerical models and some results of numerical simulation of self-existed oscillatory flow regimes through exhaust diffusers of large steam turbines operating jointly with last stage.

Artykuł przedstawia trójwymiarowe modele oraz obliczenia dotyczące oscylacyjnych zakresów przepływu w dyfuzorach wylotowych dużych turbin parowych współpracujących z ostatnim stopniem turbiny.