The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform
A Garciagutierrez - One of the best experts on this subject based on the ideXlab platform.
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numerical 3d simulation of the erosion due to solid particle impact in the Main Stop Valve of a steam turbine
Applied Thermal Engineering, 2004Co-Authors: Zdzislaw Mazur, Rafael Camposamezcua, G Urquizabeltran, A GarciagutierrezAbstract:Abstract Solid particle erosion in a steam turbine Main Stop Valve bypass Valve has been investigated by means of computational fluid dynamics. Previews attempts to couple fluid mechanics and erosion modeling and improvements in the hydrodynamics models together with improvements in the erosion models are reviewed. The solid particle bearing steam flow through the Valve was investigated using a 3D numerical model and the finite volume code Fluent V6.0.12, looking for a reduction of the erosion process. The flow simulation was carried out for the Valve original and modified designs with changes of the angle of particle impact on the Valve surface. Numerical predictions have been carried out using the Renormalization Group (RNG) k–e turbulence model. To account for the influence of turbulent fluid fluctuations on particle motion, the stochastic tracking Discrete Random Walk model is used, which includes the effect of instantaneous turbulent velocity fluctuations on the particle trajectories. The removal of wall material due to erosion is calculated using the Finnie model developed for ductile materials. The numerical predictions showed a 51% reduction of the erosion rate for the Valve modified design due to changes of the particles trajectories and impingement angle (angle of particle impact). The results obtained show that numerical simulation can be used in a predictive manner to solve a real practical design problem.
Zdzislaw Mazur - One of the best experts on this subject based on the ideXlab platform.
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numerical 3d simulation of the erosion due to solid particle impact in the Main Stop Valve of a steam turbine
Applied Thermal Engineering, 2004Co-Authors: Zdzislaw Mazur, Rafael Camposamezcua, G Urquizabeltran, A GarciagutierrezAbstract:Abstract Solid particle erosion in a steam turbine Main Stop Valve bypass Valve has been investigated by means of computational fluid dynamics. Previews attempts to couple fluid mechanics and erosion modeling and improvements in the hydrodynamics models together with improvements in the erosion models are reviewed. The solid particle bearing steam flow through the Valve was investigated using a 3D numerical model and the finite volume code Fluent V6.0.12, looking for a reduction of the erosion process. The flow simulation was carried out for the Valve original and modified designs with changes of the angle of particle impact on the Valve surface. Numerical predictions have been carried out using the Renormalization Group (RNG) k–e turbulence model. To account for the influence of turbulent fluid fluctuations on particle motion, the stochastic tracking Discrete Random Walk model is used, which includes the effect of instantaneous turbulent velocity fluctuations on the particle trajectories. The removal of wall material due to erosion is calculated using the Finnie model developed for ductile materials. The numerical predictions showed a 51% reduction of the erosion rate for the Valve modified design due to changes of the particles trajectories and impingement angle (angle of particle impact). The results obtained show that numerical simulation can be used in a predictive manner to solve a real practical design problem.
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Improvement of the Turbine Main Stop Valves with Flow Simulation in Erosion by Solid Particle
2004Co-Authors: Zdzislaw Mazur, G. Urquiza, R. CamposAbstract:The flow field in a steam turbine Main Stop Valve bypassValve (MSVBV) has been investigated by means of CFD sim-ulations. Because the entire flow to the turbine during startupsiscarriedbytheMSVBVitissubjecttoserioussolidpar-ticle erosion problems and requires frequent replacement toavoidthecatastrophicdamagewhichcanoccurredwhentheMSVBV skirt eroded through causing large pieces of metalto be carried directly into the turbine. For some of the mostimportant geometric parameters of the MSVBV, design rec-ommendation have been made.
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Improvement of the Turbine Main Stop Valves with Flow Simulation in Erosion by Solid Particle Impact CFD
International Journal of Rotating Machinery, 2004Co-Authors: Zdzislaw Mazur, G. Urquiza, R. CamposAbstract:The flow field in a steam turbine Main Stop Valve bypass Valve (MSVBV) has been investigated by means of CFD simulations. Because the entire flow to the turbine during start ups is carried by the MSVBV it is subject to serious solid particle erosion problems and requires frequent replacement to avoid the catastrophic damage which can occurred when the MSVBV skirt eroded through causing large pieces of metal to be carried directly into the turbine. For some of the most important geometric parameters of the MSVBV, design recommendation have been made.
Khoirudin Syah Sulaiman - One of the best experts on this subject based on the ideXlab platform.
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RECALCULATE THE HYDRAULIC INSTALATION SYSTEM OF THE Main Stop Valve AT PLTU UNIT 3 PT.PJB UNITPEMBANGKIT GRESIK
2016Co-Authors: Khoirudin Syah SulaimanAbstract:Main Stop Valve merupakan peralatan/komponen pengaman turbin uap pada PLTU PT. PJB UP. Gresik yang berfungsi sebagai penutup cepat aliran uap utama menuju turbin saat keadaan darurat untuk mencegah kegagalan operasi unit pembangkit. Peralatan ini digerakkan menggunakan sistem hidraulik yang terdiri berbagai macam komponen seperti pompa hidraulik, directional control Valve, instalasi perpipaan, reservoir, dan silinder hidraulik. Pada penelitian metode yang digunakan untuk menganalisa unjuk kerja/performa dari suatu sistem hidraulik penggerak Main Stop Valve adalah dengan melakukan perhitungan ulang gaya yang bekerja pada Stop Valve, gaya pembebanan pada silinder hidraulik, kapasitas pompa hidraulik, dan daya motor listrik secara toritis menggunakan referensi data operasi di lapangan. Berdasarkan hasil perhitungan ulang didapat nilai kapasitas pompa hidraulik sebesar 2800 dengan daya motor listrik sebesar 190KW untuk dapat menggerakkan silinder hidraulik dengan gaya pembebanan silinder sebesar 248213,41N.
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perhitungan ulang instalasi sistem hidraulik penggerak Main Stop Valve pltu unit 3 pt pjb unit pembangkitan gresik
Paper and Presentations Mechanical Engineering RSM 621.2 Sul p 2016, 2016Co-Authors: Khoirudin Syah SulaimanAbstract:Main Stop Valve merupakan peralatan/komponen pengaman turbin uap pada PLTU PT. PJB UP. Gresik yang berfungsi sebagai penutup cepat aliran uap utama menuju turbin saat keadaan darurat untuk mencegah kegagalan operasi unit pembangkit. Peralatan ini digerakkan menggunakan sistem hidraulik yang terdiri berbagai macam komponen seperti pompa hidraulik, directional control Valve, instalasi perpipaan, reservoir, dan silinder hidraulik. Pada penelitian metode yang digunakan untuk menganalisa unjuk kerja/performa dari suatu sistem hidraulik penggerak Main Stop Valve adalah dengan melakukan perhitungan ulang gaya yang bekerja pada Stop Valve, gaya pembebanan pada silinder hidraulik, kapasitas pompa hidraulik, dan daya motor listrik secara toritis menggunakan referensi data operasi di lapangan. Berdasarkan hasil perhitungan ulang didapat nilai kapasitas pompa hidraulik sebesar 2800 dengan daya motor listrik sebesar 190KW untuk dapat menggerakkan silinder hidraulik dengan gaya pembebanan silinder sebesar 248213,41N.
Rafael Camposamezcua - One of the best experts on this subject based on the ideXlab platform.
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numerical 3d simulation of the erosion due to solid particle impact in the Main Stop Valve of a steam turbine
Applied Thermal Engineering, 2004Co-Authors: Zdzislaw Mazur, Rafael Camposamezcua, G Urquizabeltran, A GarciagutierrezAbstract:Abstract Solid particle erosion in a steam turbine Main Stop Valve bypass Valve has been investigated by means of computational fluid dynamics. Previews attempts to couple fluid mechanics and erosion modeling and improvements in the hydrodynamics models together with improvements in the erosion models are reviewed. The solid particle bearing steam flow through the Valve was investigated using a 3D numerical model and the finite volume code Fluent V6.0.12, looking for a reduction of the erosion process. The flow simulation was carried out for the Valve original and modified designs with changes of the angle of particle impact on the Valve surface. Numerical predictions have been carried out using the Renormalization Group (RNG) k–e turbulence model. To account for the influence of turbulent fluid fluctuations on particle motion, the stochastic tracking Discrete Random Walk model is used, which includes the effect of instantaneous turbulent velocity fluctuations on the particle trajectories. The removal of wall material due to erosion is calculated using the Finnie model developed for ductile materials. The numerical predictions showed a 51% reduction of the erosion rate for the Valve modified design due to changes of the particles trajectories and impingement angle (angle of particle impact). The results obtained show that numerical simulation can be used in a predictive manner to solve a real practical design problem.
G Urquizabeltran - One of the best experts on this subject based on the ideXlab platform.
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numerical 3d simulation of the erosion due to solid particle impact in the Main Stop Valve of a steam turbine
Applied Thermal Engineering, 2004Co-Authors: Zdzislaw Mazur, Rafael Camposamezcua, G Urquizabeltran, A GarciagutierrezAbstract:Abstract Solid particle erosion in a steam turbine Main Stop Valve bypass Valve has been investigated by means of computational fluid dynamics. Previews attempts to couple fluid mechanics and erosion modeling and improvements in the hydrodynamics models together with improvements in the erosion models are reviewed. The solid particle bearing steam flow through the Valve was investigated using a 3D numerical model and the finite volume code Fluent V6.0.12, looking for a reduction of the erosion process. The flow simulation was carried out for the Valve original and modified designs with changes of the angle of particle impact on the Valve surface. Numerical predictions have been carried out using the Renormalization Group (RNG) k–e turbulence model. To account for the influence of turbulent fluid fluctuations on particle motion, the stochastic tracking Discrete Random Walk model is used, which includes the effect of instantaneous turbulent velocity fluctuations on the particle trajectories. The removal of wall material due to erosion is calculated using the Finnie model developed for ductile materials. The numerical predictions showed a 51% reduction of the erosion rate for the Valve modified design due to changes of the particles trajectories and impingement angle (angle of particle impact). The results obtained show that numerical simulation can be used in a predictive manner to solve a real practical design problem.
