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  • Three-dimensional flow simulation of transient

    2013-5-23 · The transient power failure process of a prototype pump-turbine was studied numerically by three-dimensional (3-D) simulations. Fluid coupling and dynamic mesh (DM) method were used to calculate the rotational speed of the runner. Simulations were performed based on turbulence model. Specific transient …

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  • Three-Dimensional Simulation of Air Entrainment

    The three-dimensional unsteady vortex flow in a sump pump is investigated by the computational fluid dynamics (CFD) method with the shear-stress transport (SST) k − ω model and the volume of fluid (VOF) multiphase model. The helicity density, involving both velocity and vortex, is especially used to discuss the mechanism of the process for air …

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  • Acoustic streaming in an ultrasonic air pump with

    2014-12-1 · A three-dimensional simulation of acoustic streaming in an ultrasonic air pump using the FDTD method has been carried out on an arrayed GPU in the TSUBAME 2.0 supercomputer. Because of the adoption of the low Reynolds number than actual and the approximation in thermal physics, the calculated result of the …

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  • Acoustic streaming in an ultrasonic air pump with

    Acoustic streaming in an ultrasonic air pump with three-dimensional finite-difference time-domain analysis and comparison to the measurement Ultrasonics. 2014 Dec;54(8):2119-25. doi: 10.1016/j.ultras.2014.06.015. Epub 2014 …

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  • Computational Fluid Dynamics Modeling Three

    2015-2-18 · Air was used as the test fluid, and the internal flows were measured at various locations and under various capacities. Flow calculations were made, for both the isolated impeller case and the complete stage case, using Denton viscous codes LOSS3D and MULTSTAGE14, by which the three-dimensional steady flow through …

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  • Experimental and Numerical Study of Three

    In order to study the internal flow characteristics of roto-jet pump, the standard turbulence model and SIMPLEC algorithm were used to calculate the three-dimensional turbulence flow field under design condition. The simulation results reveal the internal flow phenomena of roto-jet pump, which shows the pressure …

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  • Numerical Simulation of the Three-Dimensional

    An original analytical three-dimensional wind turbine wake model is presented. The expression of wake model is simple and its computational cost is low. The accuracy of wake model is validated by the wind tunnel measured data. The wake model has a good accuracy beyond the 5D downwind of distance. The predictions from the …

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  • Study on an innovative three-dimensional wind

    2013-6-29 · dimensional study cannot simulate the real heat transfer mechanism in a gas turbine blade where three-dimensional flow is developed in turbine blade passages due leading edge horseshoe vortices. Langston et al. [12], Sieverding [13] and Wang et al. [14] provided ... by a 10 HP three-phase AC electric motor. Air …

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  • H. M. El-Batsh et al., Three Dimensional Heat Transfer ...

    2020-5-18 · Pictorial and dimensional data is subject to change without notice. The information presented is based on technical data and test results of nominal units. ... • Line voltage @ 60 Hz 230V or 460V for three-phase ... • Dental hand tools, air mattress Industrial tools and machinery • Fiberglass choppers • Liquid/hydraulic pump …

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  • 3D Models, CAD Solids - 3D CAD Browser

    'I use background objects for 3D illustrations of new product designs. I couldn't possibly take time to model a Boeing 737 when it is not part of the new design but only a background object. 3D CAD Browser lets me download all of the objects I need by simply sharing my own.

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  • What is 3D printing? How does a 3D printer work?

    3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the object is created. Each of these layers can …

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  • Launcher 3D Prints First LOX Turbopump for

    2012-5-23 · Application of three-dimensional numerical study in air-blast atomizer designing Computational Continuum Mechanics, Vol. 6, No. 3 Performance of Combination Drug and Hygroscopic Excipient Submicrometer Particles from a Softmist Inhaler in a Characteristic Model of the Airways

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  • Aspects of Computer Simulation of Liquid-Fueled

    Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged …

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  • US5121329A - Apparatus and method for

    The President Portfolio contains 3 Putty Materials-High, Medium & Low End Hardness for the Optimal Stability and simple ease of cutting ,Moreover President offers a High Tears Strength for great Precision and dimensional Stability. Three Wash Material – Xtra Light Body, Light Body, Regular Body.

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  • Coltene President Putty With Light Body -

    The invention is a dental micro-motor device with vortex tube cooling system which gives audible and visual warnings depending on the difference of heat occurring in the tooth during the treatment in dental treatments. WO/2015/179371A1 ULTRSONIC DENTAL HANDPIECE A dental handpiece and a dental cleaning procedure are …

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  • Dentistry, Oral or Dental Hygiene

    NEW 24x24 Sewage & Grinder Package Systems. Zoeller Pump Company's NEW 24x24 PSF Cover & Package Systems come in both simplex and duplex configurations with a variety of sewage and grinder pump options. This short video points out some of the features and benefits of our new design. Take a look! …

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  • Zoeller Pump Company | Wastewater Pumps &

    2)Studied the 'Compressor, Air filters, Combustion Chamber, Gas turbine, Generator, Feedwater pump, Condensate Pump,' 3) Investigate the Heat Recovery Steam Generator (HRSG) and find the heat losses 4) Fill up the log sheets of Turbine… GENCO 3 (Steam Power Station Faisalabad) well known in the Energy Production …

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  • Ali Azmat - Faisalabad, Punjab, Pakistan |

    2019-10-3 · Influence of conical degree on the performance of radial and axial integrated auxiliary bearing for active magnetic bearing system. Authors (first, second and last of 6) Chengtao Yu. Yuemei Sun. Wentao Shan. Content type: OriginalPaper. Published: 03 October 2019. Pages: 4681 - 4687.

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  • Three-Dimensional Simulation of Air Entrainment

    The three-dimensional unsteady vortex flow in a sump pump is investigated by the computational fluid dynamics (CFD) method with the shear-stress transport (SST) k − ω model and the volume of fluid (VOF) multiphase model. The helicity density, involving both velocity and vortex, is especially used to discuss the mechanism of the process for air entrainment.

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  • Advanced Three-Dimensional Aerodynamic Design

    2021-5-13 · |2. Three-dimensional end wall for the high load turbine The increase in the secondary flow loss due to an increase in flow turning angle, a byproduct of the increased load, causes a drop in aerodynamic performance. To reduce the losses due to secondary flow, a three-dimensional end wall design (axisymmetric end wall …

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  • Experimental and Numerical Study of Three

    2015-2-18 · Air was used as the test fluid, and the internal flows were measured at various locations and under various capacities. Flow calculations were made, for both the isolated impeller case and the complete stage case, using Denton viscous codes LOSS3D and MULTSTAGE14, by which the three-dimensional steady flow through …

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  • Three-Dimensional Flow Within a Turbine

    Detailed measurements of the subsonic flow in a large-scale, plane turbine cascade were made to evaluate the three-dimensional nature of the flow field. Tests were conducted at a passage aspect ratio of 1.0 with a collateral inlet boundary layer. Flow visualization was done on airfoil and endwall surfaces.

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  • Three Dimensional Design of a High Speed Radial

    2015-3-18 · The turbine was designed by a newly developed fully three dimensional compressible inverse design method, in which the blade shapes are computed for a specified distribution of r V ¯ θ ⁠. The designed blades had non-radial blade filaments and therefore the impeller was carefully analysed for its structural integrity.

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  • Three-Dimensional CFD Analysis of a Gas Turbine

    2009-8-3 · 'Three-Dimensional CFD Analysis of a Gas Turbine Combustor for Medium/Low Heating Value Syngas Fuel.' Proceedings of the ASME Turbo Expo 2008: Power for Land, Sea, and Air . Volume 4: Heat Transfer, Parts A and B .

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  • Numerical Simulation of the Three-Dimensional

    In order to study the internal flow characteristics of roto-jet pump, the standard turbulence model and SIMPLEC algorithm were used to calculate the three-dimensional turbulence flow field under design condition. The simulation results reveal the internal flow phenomena of roto-jet pump, which shows the pressure …

    Get Price
  • Research Article Computational Fluid Dynamics

    2021-1-3 · Air-working ionic soft actuator based on three-dimensional graphene Materials Letters ( IF 3.204) Pub Date : 2020-12-26, DOI: 10.1016/j.matlet.2020.129267 Kai Xiang, Tian Chen, Yanni Wang Air-working ionic soft actuator was fabricated by hot-pressing assembly.

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  • Turbine - Turbine selection on the basis of

    2019-7-31 · Three-Dimensional Unsteady Turbulent Flow and Excitation Force in Partial Admission Air Turbine YonghuiXie, 1 KekeGao, 1 JibingLan, 1 andGongnanXie 2 School of Energy and Power Engineering, Xi an …

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  • Experimental and Numerical Study of Three

    2015-2-18 · Air was used as the test fluid, and the internal flows were measured at various locations and under various capacities. Flow calculations were made, for both the isolated impeller case and the complete stage case, using Denton viscous codes LOSS3D and MULTSTAGE14, by which the three-dimensional steady flow through …

    Get Price
  • Attempt of three-dimensional shape generation with ...

    During three-dimensional shape generation, a broad gap width makes it difficult to suck the electrolyte supplied into the gap between the workpiece and the electrode surface. This is because the mixing amount of air into the electrolyte is increased.

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  • UNSTEADY AND THREE-DIMENSIONAL CFD

    2017-9-14 · wind turbine. Three different turbine placement positions at different heights are investigated to observe C p - λ curve sensitivity at various tip speed ratios. Position 1 and Position 2 are at the edge of the building, whereas position 3 is a few meters away from the edge, directed towards the geometric center of a …

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  • GEO3D - Three-Dimensional Computer Model of

    2013-6-7 · @article{osti_1252461, title = {GEO3D - Three-Dimensional Computer Model of a Ground Source Heat Pump System}, author = {Menart, James}, abstractNote = {This file is the setup file for GEO3D, a computer program written by Jim Menart to simulate vertical wells in conjunction with a heat pump for ground source heat pump (GSHP) systems. This is a very detailed three-dimensional …

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  • THREE-DIMENSIONAL FREE SURFACE NON

    2019-10-24 · THREE-DIMENSIONAL FREE SURFACE NON-HYDROSTATIC MODELING OF ... KEYWORDS: Air bubbles transport, pump station modeling, overfall plunging jet, Finite volume method, Large Eddy Simulation. Tien Mun Yee ----- 05/06/2009 ----- THREE-DIMENSIONAL FREE SURFACE NON-HYDROSTATIC MODELING OF PLUNGING WATER WITH TURBULENCE AND AIR …

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  • A Computational Visualization of Three

    2014-12-16 · Donahoo, EE, Camci, C, Kulkarni, AK, & Belegundu, AD. 'A Computational Visualization of Three Dimensional Flow: Finding Optimum Heat Transfer and Pressure Drop Characteristics From Short Cross-Pin Arrays and Comparison With Two Dimensional Calculations.' Proceedings of the ASME 1999 International Gas Turbine …

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  • Emerging trends in endodontic irrigation - Dental Journal

    c. Three-dimensional obturation of the root canal system. As endodontists, our main goal should be to focus on the predictable elimination of ... The peristaltic pump delivers irrigant via the handpiece as the root canal is being prepared by rotary file. -I Probe ... connected to the turbine coupling compressed air enters the

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  • Three-dimensional printing with nano-enabled

    1. Indoor Air. 2018 Nov;28(6):840-851. doi: 10.1111/ina.12499. Epub 2018 Sep 3. Three-dimensional printing with nano-enabled filaments releases polymer particles containing carbon nanotubes into air.

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  • US4575330A - Apparatus for production of three

    A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, successive …

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  • US9482249B2 - Three-dimensional printing

    A three-dimensional printing process, a swirling device, and a thermal management process are disclosed. The three-dimensional printing process includes distributing a material to a selected region, selectively laser melting the material, and forming a swirling device from the material. The swirling device is printed by selective laser …

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  • Experiments With Three Dimensional Passive

    2008-11-11 · Bohl, DG, & Volino, RJ. 'Experiments With Three Dimensional Passive Flow Control Devices on Low-Pressure Turbine Airfoils.' Proceedings of the ASME Turbo Expo 2005: Power for Land, Sea, and Air.

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  • UNSTEADY AND THREE-DIMENSIONAL CFD

    2017-9-14 · wind turbine. Three different turbine placement positions at different heights are investigated to observe C p - λ curve sensitivity at various tip speed ratios. Position 1 and Position 2 are at the edge of the building, whereas position 3 is a few meters away from the edge, directed towards the geometric center of a …

    Get Price
  • An ITT Brand Vertical Turbine Pumps

    2019-7-23 · 2 Vertical Turbine Pumps Vertical Turbine Pumps Flexibility by Design: Three Pump Models, One Common Bowl Assembly The three different pump models in the vertical turbine line have one thing in common – the hydraulic design of the pump bowl assembly. Using state-of-the-art techniques in turbine pump design, Goulds vertical turbine …

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  • Vertical Turbine Pumps - Goulds Pumps

    2013-9-18 · 2 Goulds Vertical Turbine Pumps Flexibility by Design: Three Pump Models, One Common Bowl Assembly The three different pump models in the vertical turbine line have one thing in common – the hydraulic design of the pump bowl assembly. Using state-of-the-art techniques in turbine pump design, Goulds vertical turbine …

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  • Three-Dimensional Calculation of Air-Water

    Three-Dimensional Calculation of Air-Water Two-Phase Flow in a Centrifugal Pump Based on a Bubbly Flow Model with Fixed Cavity. …

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  • Three-dimensional finite-element analysis of

    @article{osti_5223391, title = {Three-dimensional finite-element analysis of the cellular convection phenomena in the Clinch River Breeder Reactor Plant prototype pump}, author = {Silver, A H and Lee, J Y}, abstractNote = {Cellular convection was studied rigorously during the development of the Clinch River Breeder Reactor …

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  • 3D Seismic Isolation for Advanced N.P.P Application ...

    2015-3-30 · II. Outline of the Three-Dimensional Base Isolation System 1. Design Concept As shown in Fig.1, the proposed base isolation concept is a three-dimensional air spring to support and isolate the superstructure by compressed air, which is composed of a rubber sheet between the inner and outer cylinders, …

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  • Three-dimensional guidance method for air to ground

    Three-dimensional guidance method for air to ground missile with impact time constraint Dong Guo Peng Jiang Zixuan Liang Zhang Ren 【摘要】: This paper presents a three-dimensional guidance method based on sliding mode control(SMC) theory for attacking fixed target with time constraint.

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  • 87. Three-dimensional porous Fe-N-C derived from

    2020-3-30 · Three-dimensional porous Fe-N-C derived from iron-citrate-functionalized melamine foam as a highly active oxygen reduction catalyst for Zn-air batteriesJing Liu, Yuanyuan Zhu, Chaohua Fan, Fanglin Du, Luhua JiangZCollege of Materials Science and ...

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  • US20030086788A1 - Three dimensional blade

    The invention relates to an improved three dimensional blade for axial steam turbine comprising a leading edge with inlet flow angle and a trailing edge with an outflow angle a pressure face, suction face and a chord which is the line connecting the leading and trailing edge and the betabi the stagger angle formed to the intersect …

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