Detail publikace
Droplets deposition in steam piping connecting steam generator and steam turbine in nuclear plant
KATOLICKÝ, J. JÍCHA, M. MAREŠ, R.
Český název
Droplets deposition in steam piping connecting steam generator and steam turbine in nuclear plant
Anglický název
Droplets deposition in steam piping connecting steam generator and steam turbine in nuclear plant
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
A numerical investigation is carried out for turbulent droplet-laden flow of saturated steam produced in a steam generator (SG) that feeds steam turbine (ST) through a long and multi-bend steam piping. The main purpose of the study is to analyze deposition of droplets that form a wall film in the piping system. Commercial CFD code StarCD is used for the solution of turbulent flow field of droplet-laden steam. Turbulence is treated using k-omega model of turbulence. Wall film formation is solved by additional conservation equations. Two tasks were performed: parametric study of the deposition in a 90 degrees elbow positioned with different orientation and the deposition in a more complex piping system. This system starts with outlets from steam generator with five mouthpieces leading to a collector pipe and connecting the steam piping leading to a steam turbine. The steam piping consists of three straight segments of pipes and two 90 degrees elbows in the total length 17 m. The diameter of the steam piping is 0.425 m. Results of the simulations show where droplets deposit and where a liquid separator should be placed to drain away the water film and to avoid droplets from entering the steam turbine.
Český abstrakt
A numerical investigation is carried out for turbulent droplet-laden flow of saturated steam produced in a steam generator (SG) that feeds steam turbine (ST) through a long and multi-bend steam piping. The main purpose of the study is to analyze deposition of droplets that form a wall film in the piping system. Commercial CFD code StarCD is used for the solution of turbulent flow field of droplet-laden steam. Turbulence is treated using k-omega model of turbulence. Wall film formation is solved by additional conservation equations. Two tasks were performed: parametric study of the deposition in a 90 degrees elbow positioned with different orientation and the deposition in a more complex piping system. This system starts with outlets from steam generator with five mouthpieces leading to a collector pipe and connecting the steam piping leading to a steam turbine. The steam piping consists of three straight segments of pipes and two 90 degrees elbows in the total length 17 m. The diameter of the steam piping is 0.425 m. Results of the simulations show where droplets deposit and where a liquid separator should be placed to drain away the water film and to avoid droplets from entering the steam turbine.
Anglický abstrakt
A numerical investigation is carried out for turbulent droplet-laden flow of saturated steam produced in a steam generator (SG) that feeds steam turbine (ST) through a long and multi-bend steam piping. The main purpose of the study is to analyze deposition of droplets that form a wall film in the piping system. Commercial CFD code StarCD is used for the solution of turbulent flow field of droplet-laden steam. Turbulence is treated using k-omega model of turbulence. Wall film formation is solved by additional conservation equations. Two tasks were performed: parametric study of the deposition in a 90 degrees elbow positioned with different orientation and the deposition in a more complex piping system. This system starts with outlets from steam generator with five mouthpieces leading to a collector pipe and connecting the steam piping leading to a steam turbine. The steam piping consists of three straight segments of pipes and two 90 degrees elbows in the total length 17 m. The diameter of the steam piping is 0.425 m. Results of the simulations show where droplets deposit and where a liquid separator should be placed to drain away the water film and to avoid droplets from entering the steam turbine.
Klíčová slova česky
VERTICAL ANNULAR-FLOW; ENTRAINMENT; MODEL
Klíčová slova anglicky
VERTICAL ANNULAR-FLOW; ENTRAINMENT; MODEL
Rok RIV
2007
Vydáno
01.08.2007
Nakladatel
ELSEVIER SCIENCE SA
Místo
LAUSANNE, SWITZERLAND
ISSN
0029-5493
Časopis
NUCLEAR ENGINEERING AND DESIGN
Ročník
237
Číslo
14
Strany od–do
1534–1549
Počet stran
16
BIBTEX
@article{BUT44082,
author="Jaroslav {Katolický} and Miroslav {Jícha} and Radim {Mareš},
title="Droplets deposition in steam piping connecting steam generator and steam turbine in nuclear plant",
journal="NUCLEAR ENGINEERING AND DESIGN",
year="2007",
volume="237",
number="14",
month="August",
pages="1534--1549",
publisher="ELSEVIER SCIENCE SA",
address="LAUSANNE, SWITZERLAND ",
issn="0029-5493"
}