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The result obtained from the program was transmitted directly into Pro/E, and the 3D modeling of large wind turbine blades was achieved. This method accomplishes the programming design and the parameterized modeling, thus enhances the efficiency of the design and precision of modeling.
Get Price2014-9-30 · Each of the volute limbs is found to be subject to a large degree of mass storage throughout a pulse cycle demonstrating a definite impact of the unsteady flow. The rotor wheel shows a much smaller degree of mass flow storage overall due to the pulsating flow; however, each rotor passage is subject to a much larger degree of mass flow storage due to the instantaneous flow inequality between the two …
Get Price2002-7-10 · Comparisons to 2-D and steady 3-D results obtained with a fully viscous solver, VOLSOL, are made. The investigated design parameters are the axial gap (∼8–29 percent of rotor axial chord length) and the stator vane size and count (stator-rotor pitch ratio ∼1–2.75).
Get PriceThe current study applies PyFR , , a Python based Computational Fluid Dynamics (CFD) solver, to fifth-order accurate petascale DNS of compressible flow over a three-dimensional MTU-T161 Low-Pressure Turbine (LPT) blade with diverging end walls at R e = 200, 000 on an unstructured mesh with over 11 billion degrees-of-freedom per equation. This case is representative of general trends in modern turbine …
Get Price2021-6-1 · In this paper 25 different layouts were investigated. Results show that VAWTs increase each other’s performance by up to 15%, and this optimal layout was for a turbine spacing of three turbine diameters, an array angle, β, of 60°, and when the rotors were co-rotating. Yet, this layout was at the limit of the scope, and the other results indicated an optimal angle around 75°, hence the augmentations …
Get PriceA three-dimensional, turbulent, and steady flow simulation was used for CFD analyses. In the pump– Fig. 1 Pump–turbine design process turbine optimization process, as shown in Fig. 1, CFD ...
Get Price2020-2-21 · Abstract. Further improvement of state-of-the-art low-pressure (LP) turbines (LPTs) has become progressively more challenging. LP design is more than ever confronted to the need to further integrate complex models and to shift from single-component design to the design of the complete LPT module at once. This leads to high-dimensional design spaces ...
Get PriceIn this study, a pump-turbine in a pumped storage power plant was investigated. The pump-turbine includes a runner with 9 blades, 20 guide vanes, 20 stay vanes including a special one, a spiral casing
Get Price2021-5-15 · dual linear pounding tuned mass dampers to mitigate the three-dimensional vibrations of the wind turbine. Similarly, the authors in [12] propose a novel approach for optimizing the design parameters of the TMD (i.e., stiffness, damping, and installation location) to effectively reduce the vibrations of a spar-buoy turbine. Stewart and Lackner have used
Get Price2021-5-1 · The LEGR and the streamlines at three different spanwise sections in the runner region are shown in Fig. 26. In Fig. 26a, the LEGR is large at the runner inlet (marked in black ellipses) for all spanwise sections. For the spanwise sections located close to the hub and the shroud (span 0.1 and span 0.9, respectively), the angle of attack is small and the flow is smooth at the leading edge of the …
Get Price2008-7-1 · Three-Dimensional and Rotational Aerodynamics on the NREL Phase VI Wind Turbine Blade ... Impact of Gas-Filled Annular Space on Thermal and Optical Performances of a Heat Pipe Parabolic Trough Solar Collector. ... Three-Dimensional Solid Modeling of Large Wind Turbine …
Get Price2016-5-12 · Three-dimensional numerical simulation for a prototype pump-turbine has been performed to investigate the transient characteristics and flow behaviors in the startup process. The rotational speed, which varies with runner torque and inertial of the rotating systems, is obtained by hydraulic-force coupling method.
Get Price2018-5-15 · The transient flow in pump-turbines during the load rejection process is very complex. However, few studies have been conducted on three-dimensional (3-D) numerical simulation. Hence, we simulated 3-D transient turbulent flow in a pump-turbine during the load rejection process using the calculation method of coupling the flow with the rotor motion of rigid body.
Get Price2011-10-31 · When the turbine fence occupies a large portion of the passage, the potential power of the fence rises significantly, to a value much larger than estimates based on the kinetic energy flux. The increase in power comes from the increased tidal head that a large turbine fence creates and the resulting increase in the turbine drag.
Get PriceDownloadable (with restrictions)! To achieve the flow mechanism during the closure of the guide vanes in a pump-turbine in pump mode, a three-dimensional (3-D) incompressible simulation using the shear stress transition (SST) k-ω turbulence model was performed. The dynamic mesh method was adopted to simulate the closing process of the guide vanes.
Get Price2021-5-1 · The runaway condition is unsteady and is of significant importance in pump turbines. In this research, the shear-stress transport (SST) k-ω turbulence model is used to simulate the unsteady flow in the vaneless region and the runner of a prototype pump turbine. The characteristics of pressure fluctuations, vortex identification based on Q criterion and local entropy generation rate (LEGR) in ...
Get Price2016-8-1 · Step 1: Analyze the problem parameters to determine “feature to improve” and “undesired result”. For wind turbine design the main goal is to improve stability, ease operations, adaptability, automation and etc. In the same time some features must remain constant. For example wright of wind turbine blades, complexity of wind turbine and etc.
Get PriceYoung Do Choi. The oscillating flow is a problem occurring in the stay vane passage of hydro turbines. The improper shape of the stay vane causes wake formation and sheds large eddies in the ...
Get Pricedesign, the CO-DR WT (counter-rotating dual rotor wind turbine) is analysed with a CFD (computational. fluid dynamics) code, varying the axial and radial distances between the tw o turbines ...
Get Price2 天前 · Standalone Gas Turbine Output. 330 MW class. Combined Cycle Output. 500 MW class 1,000 MW class. Combined Cycle Efficiency. More than 59%. High-performance large-capacity gas turbines for 50Hz power generation. In February 1997, the first unit of the 1,500°C Class M501G Series gas turbines came into commercial operation.
Get Price2020-8-6 · Three-dimensional, 1nv1sc1d codes have been developed for Isolated propel-lers using a variety of algorithms. Bober, et al. (ref. 2) and Barton, et al. (ref. 3) used the Beam and Warming algorithm and obtained good comparisons to experimental results. Clark (ref. 4) used Denton's finite volume code modified
Get Price2011-10-31 · When the turbine fence occupies a large portion of the passage, the potential power of the fence rises significantly, to a value much larger than estimates based on the kinetic energy flux. The increase in power comes from the increased tidal head that a large turbine fence creates and the resulting increase in the turbine drag.
Get Price2011-6-20 · 21-2.1.3 Turbine Mixers. Turbine mixer is another industry designation that typically refers to more robust mixer designs that may have a variety of impeller and seal types and may have motors from 1 hp (746 W) to 1000 hp (746 000 W) or larger.The varioussizesforturbine mixersaredepictedinFigure 21-4.Turbine
Get PriceIn this study, a pump-turbine in a pumped storage power plant was investigated. The pump-turbine includes a runner with 9 blades, 20 guide vanes, 20 stay vanes including a special one, a spiral casing
Get Price2013-7-9 · The three geometrical constraints are the inlet and outlet flow passage areas derived from the design parameters and the no-inflection-point condition on the aerofoil surface. Good performance of supersonic turbine aerofoils designed by the developed method is confirmed using computational fluid dynamics. There is no strong shock wave.
Get Price2014-12-16 · Structural Dynamics Analysis of Three-Dimensional Bi-Axial Sun-Tracking System Structure Determined by Numerical Modal Analysis J. Sol. Energy Eng (June,2018) Approach to Unidirectional Coupled CFD–FEM Analysis of Axial Turbocharger Turbine Blades
Get Price2013-8-23 · This paper deals with the design of a 5MW floating offshore Vertical Axis Wind Turbine (VAWT). The design is based on a new offshore wind turbine concept (DeepWind concept), consisting of a Darrieus rotor mounted on a spar buoy support structure, which is anchored to the sea bed with mooring lines [1].
Get Price2011-10-31 · Sarkar, A, & Gudmestad, OT. 'Installation of Monopiles for Offshore Wind Turbines—By Using End-Caps and a Subsea Holding Structure.' Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering.
Get Price2021-7-2 · ARABELLE 1700. Nuclear reheat. Up to 75bar 300°C 1090psig 570F. 1200 - 1900MW. GE’s Arabelle turbine is the most powerful nuclear steam turbine in operation. Suiting all reactors type, from 700MW up to 1,900MW, the Arabelle is highly efficient, reliable, and …
Get Price2015-3-31 · The ultrahigh-head pump turbine has been designed utilizing the latest technology such as computational fluid dynamics (CFD) and three-dimensional computer-aided design and associated structure analysis (3D-CAD/CAE) to ensure that it has high strength reliability and high hydraulic performance. Furthermore, several tests were conducted with actual
Get Price2 天前 · Standalone Gas Turbine Output. 330 MW class. Combined Cycle Output. 500 MW class 1,000 MW class. Combined Cycle Efficiency. More than 59%. High-performance large-capacity gas turbines for 50Hz power generation. In February 1997, the first unit of the 1,500°C Class M501G Series gas turbines came into commercial operation.
Get Price2020-8-6 · Three-dimensional, 1nv1sc1d codes have been developed for Isolated propel-lers using a variety of algorithms. Bober, et al. (ref. 2) and Barton, et al. (ref. 3) used the Beam and Warming algorithm and obtained good comparisons to experimental results. Clark (ref. 4) used Denton's finite volume code modified
Get PriceAdvanced Design of Turbomachinery. It is an exciting time to be working in gas turbine technology! As industry strives for lower costs, better performance, and reduced emissions, new and challenging problems continue to emerge. With its high efficiency, rapid startup time, and large power density, the gas turbine will continue to play a large ...
Get Price2014-2-20 · Proceedings of the ASME 2013 Turbine Blade Tip Symposium. ASME 2013 Turbine Blade ... Though there is not much freedom in shape modification of profiles for tip sections of steam turbines of large output, there is still enough space for optimizing these profiles. ... Three-Dimensional Design Method for Long Blades of Steam Turbines Using Fourth ...
Get Price2009-5-20 · Wind Turbine Technology: Fundamental Concepts in Wind Turbine Engineering, Second Edition Three-Dimensional Solid Modeling of Large Wind Turbine Blade Based on Wilson Theory International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Get Price2015-8-12 · Kim, D. 'Design Space of Foil Bearings for Closed Loop Supercritical CO2 Power Cycles Based on Three-Dimensional Thermo-Hydrodynamic Analyses.' Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. Volume 7A: Structures and Dynamics. Montreal, Quebec, Canada. June 15–19, 2015. V07AT31A027. ASME.
Get Price2013-4-10 · Howell et al. provided three-dimensional CFD model based on RNG k-ε turbulence model , and the effects of turbine solidity, roughness, and tip vortices were considered. Numerical investigations on flow curvature effects were conducted by Coiro et al. [ 20 ], and he argued the difference between DMS model and VAT-VOR3D code.
Get Price2020-8-18 · The third variant of the FeTu system is the green power generator that converts waste heat into power. The concept of the “two-stage” turbine represents the positive displacement and low-velocity technology of this system, which can be compared to a hybrid between a turbine and a piston engine. Two high-pressure domains are featured in this ...
Get Price2021-7-2 · ARABELLE 1700. Nuclear reheat. Up to 75bar 300°C 1090psig 570F. 1200 - 1900MW. GE’s Arabelle turbine is the most powerful nuclear steam turbine in operation. Suiting all reactors type, from 700MW up to 1,900MW, the Arabelle is highly efficient, reliable, and …
Get Price2020-8-6 · Three-dimensional, 1nv1sc1d codes have been developed for Isolated propel-lers using a variety of algorithms. Bober, et al. (ref. 2) and Barton, et al. (ref. 3) used the Beam and Warming algorithm and obtained good comparisons to experimental results. Clark (ref. 4) used Denton's finite volume code modified
Get Price2009-5-20 · Wind Turbine Technology: Fundamental Concepts in Wind Turbine Engineering, Second Edition Three-Dimensional Solid Modeling of Large Wind Turbine Blade Based on Wilson Theory International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Get PriceA typical conventional large-scale steam turbine is of axial flow one having three-dimensional static and moving blades mounted on the housing and the rotor, respectively. The working fluid (for ex. water steam), in general, flows axially, so that the physical properties of steam may considerably change on its way to the last stage, thereby ...
Get Price2017-3-6 · In this study, we combine time-resolved aerodynamic data measured locally at three outer blade sections on a GE 1.5 MW wind turbine blade and high-frequency SCADA generator power data from a daytime field campaign in northern Germany with a computer simulation that mimics the GE wind turbine in a high-resolution large-eddy simulation (LES) of a ...
Get Price2013-7-9 · The three geometrical constraints are the inlet and outlet flow passage areas derived from the design parameters and the no-inflection-point condition on the aerofoil surface. Good performance of supersonic turbine aerofoils designed by the developed method is confirmed using computational fluid dynamics. There is no strong shock wave.
Get Price2019-1-22 · Two dimensional axisymmetric model Solar radiation Radiation heat transfer Greenhouse effect ABSTRACT A two-dimensional axisymmetric CFD method is proposed for the solar chimney power plant (SCPP), which includes a solar radiation model within the collector, an energy storage model, an air flow and heat transfer model, and a turbine model.
Get Price2014-12-16 · Structural Dynamics Analysis of Three-Dimensional Bi-Axial Sun-Tracking System Structure Determined by Numerical Modal Analysis J. Sol. Energy Eng (June,2018) Approach to Unidirectional Coupled CFD–FEM Analysis of Axial Turbocharger Turbine Blades
Get PriceLarge loading events on wind turbine rotor blades are often associated with transient bursts of coherent turbulent energy in the turbine inflow. These coherent turbulent structures are identified as peaks in the three-dimensional, instantaneous, turbulent shearing stress field. Such organized inflow structures and the accompanying rotor ...
Get Price2016-6-30 · The measured data points of the turbine characteristics are first expressed as a grid -spline space-curved surface, as shown in Figure 2(a).The space-curved surface is composed of three independent three-dimensional surfaces, as shown in Figure 2(b), or projections on a two-dimensional plane, as shown in Figure 2(c).Parameter represents the position of an operating point in the opening …
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