- Type of paper
: Paper in proceedings
Title: Numerical Modeling of Two-dimensional Flow of Steam and
Water Droplets in Steam Turbine Cascades
- Authors:
- Mrša, Zoran (32573)
- Sopta, Luka (74085)
- Staniša, Branko (64343)
- Editors
- Franković, B.
Proceedings title: Energija i zaštita čovjekove okoline
Language: hrvatski
Place: Opatija
Year: 1992
ISBN/ISSN: 86-81601-01-8
Pages: from 275 to 282
Meeting: Međunarodni kongres ENERGIJA I ZAŠTITA ČOVJEKOVE OKOLINE
Held: from 10/28/92 to 10/30/92
Summary: Two-dimensional flow of steam and water droplets in steam
turbine cascades is modeled on the computer using Fluent software package.
Turbulent k-e model for modeling of steam flow is used. The droplet motion
is modeled by system of ordinary differential equations. Test case is
defined by 8.000 cells roughly, with about 40.000 unknowns. The computation
time on PC 486 was three hours for 1030 iterations. The computed results
show that water droplets with diameter less than 6 micrometers move through
cascade without collisions with blades. Droplets having diameter larger
than 6 micrometers collide with blades proportionally to droplet diameter.
Droplets larger than 40 micrometers all collide with blades. The largest
amount of droplet collisions is in tail region, what agrees well with known
experimental results.
Keywords: numerical modeling, turbulent flow, blade erosion
- Type of paper
: Paper in proceedings
Title: Feasibility of Geothermal Energy Application for Electric
Power Generation in Croatia
- Authors:
- Staniša, Branko (64343)
- Čubrić, S.
- Krivak, B.
- Editors
- Franković, B.
Proceedings title: Energija i zaštita okoliša
Language: hrvatski
Place: Opatija
Year: 1994
ISBN/ISSN: 953-96054-3-1
Pages: from 439 to 446
Meeting: Međunarodni kongres ENERGIJA I ZAŠTITA ČOVJEKOVE OKOLINE
Held: from 10/26/94 to 10/28/94
Summary: Limited natural resources of fossil fuels supply, their
always rising and environmental protection requirements raise questions of
the alternative sources in the electric energy generation. One of available
sources for electric power generation is geothermal energy. This paper
presents some feasible energy sources in Croatia which could be used
economically for electric energy generation.
Keywords: geothermal sorces, energy conversion, geothermal power plants
- Type of paper
: Paper in proceedings
Title: Nuclear Power Plants-Development and Influence on
Protecting the Environment and the Natural Resources
- Authors:
- Staniša, Branko (64343)
- Editors
- Knapp, V.
- Despotović, R.
Proceedings title: Električna enrgija i okoliš
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-96132-3-X
Pages: from 81 to 89
Meeting: Drugi simpozij Hrvatskog nuklearnog društva
Held: from 11/17/94 to 11/17/94
Summary: This 1994. is 40 years of very dynamicly development of
nuclear power. On that occasion, in this paper, we will show up to the
present development, cerrent state in service and building nuclear power
plant worldwide and influence of electricity generation development from
nuclear power plant on reducing the environmental impacts and saving fossil
fuel natural resources.
Keywords: nuclear power plants, development, protecting the environment
- Type of paper
: Paper in proceedings
Title: Feasibility of the Geothermal Power Plant Installations in
Croatia
- Authors:
- Staniša, Branko (64343)
- Krivak, B.
- Editors
- Vršič,
Proceedings title: Power Engineering
Language: engleski
Place: Maribor, Slovenija
Year: 1995
ISBN/ISSN: 86-435-0105-0
Pages: from 179 to 186
Meeting: Fourth International Expert Meeting Power Engineering
Held: from 05/09/95 to 05/11/95
Summary: In the Republic of Croatia, we have found several
locations that contain hot water up to the 170řC. These geothermal fields
could be used for the power generations. This document shows the
installations of geothermal power plants, which could use steam turbine
with saturated steam. The result of the research and the studying, show
that energy produced on this fields in the steam turbine power plant with
saturated steam could be financially justify and the investment could earn
the profit.
- Type of paper
: Paper in proceedings
Title: Erosion and Erosion-corosion Damages Steam Power Plant 664
MW Krško
- Authors:
- Staniša, Branko (64343)
- Editors
- Knapp, V.
- Despotović, R.
Proceedings title: Prvi simpozij Hrvatskog nuklearnog društva
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-96132-1-3
Pages: from 159 to 168
Meeting: Prvi simpozij Hrvatskog nuklearnog društva
Held: from 11/22/93 to 11/23/93
- Type of paper
: Paper in proceedings
Title: Solid Particle Erosion of Turbine Blade Materials
- Authors:
- Ivušić, Vinko (76223)
- Staniša, Branko (64343)
- Jakovljević, M.
- Editors
- Hutchings, I. M.
- Little, J. A.
- Field, J. E.
Proceedings title: Erosion by Liquid and Solid Impact
Language: engleski
Place: Cambridge, England
Year: 1994
Pages: from 1 to 12
Meeting: 8th International Conference on Erosion by Liquid and Solid Impact
Held: from 09/04/94 to 09/08/94
Summary: A significant amount of erosion damage of rotor blades of
the first stage of high pressure part of turbine, as well as of the first
stage of medium pressure part of turbine, can take place due to impact of
the steam born solid particles. A decrease in efficiency, reliability and
working life of turbine blades are the consequences.
In order to improve the prediction of turbine blades working life, the
experiments were carried out to characterize the erosion process of turbine
blade materials. Different materials were exposed to silica particles
impact in a whirling arm rig. The results were compared to an Abrasion
Resistence Index determined by microhardness and volume fraction of
microstructure constituents, and microhardness of abrasives.
Some observations of turbine blade erosion in real life situation were also
considerd.