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  • Three-Dimensional Unsteady Hydrodynamics of

    Three-Dimensional Unsteady Hydrodynamics of Tidal Turbines (Doctoral Dissertation), Engineering, University of Cambridge. Abstract ...

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  • Three-Dimensional Piston Ring–Cylinder Bore

    2015-11-1 · These factors are highly influenced by the power cylinder system design. In particular, the piston ring to cylinder bore contact force distribution around the circumference of the piston rings must be optimized under all running conditions. To accomplish this, the ring manufacturers make the ring curvature nonconstant along the circumference.

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  • Three Dimensional Numerical Simulation of the

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  • Three-Dimensional Unsteady Hydrodynamics of

    In addition to the thrust, the bending moment of each mode can also be calculated as a mode property, and the eigenvectors corresponding to the largest bending moments can be found. In

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  • Numerical Simulation of Three-Dimensional

    In this study, the three-dimensional cavitating turbulent flow in a complete Francis turbine is simulated using mixture model for cavity/liquid two-phase flows. Numerical analysis is carried out using ANSYS CFX software release 12, and standard k-ε turbulence model is adopted for this analysis. The computational fluid domain consist of spiral casing, stay vanes, guide vanes, runner and draft ...

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  • Three-Dimensional Computational Fluid Simulation

    2008-11-20 · A 3D computational fluid dynamics model with a reduced detailed chemical kinetics of the combustion of diesel and methane fuels is developed while considering turbulence during combustion to simulate the mixture flow, formation, and combustion processes within diesel and diesel/methane dual fuel engines having swirl chambers.

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  • [PDF] Three-dimensional numerical simulations of

    Three straight-bladed vertical axis turbine designs were simulated using Three-Dimensional (3D) transient Computational Fluid Dynamics (CFD) models, using a commercial Unsteady Reynolds Averaged Navier–Stokes (URANS) solver. The turbine designs differed in support strut section, blade-strut joint design and strut location to evaluate their effect on power output, torque fluctuation levels ...

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  • Three-dimensional free vibration analysis of triclinic ...

    2019-2-1 · Then, the non-dimensional wave phase velocity ϒ = Ψ ξ versus the non-dimensional axial wave number ξ = ζ a were depicted in Fig. 2 and Fig. 3 for a relatively thin (b − a) a = 0.05 and thick (b − a) a = 0.5 hollow cylinder, respectively. The short circuit boundary condition is …

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  • [PDF] A design study of radial inflow turbines with ...

    An inverse design technique to design turbomachinery blading with splitter blades in three-dimensional flow is developed. It is based on the use of Clebsch transformation, which allows the velocity field to be written as a potential part and a rotational part. It is shown that the rotational part can be expressed in terms of the mean swirl schedule (the circumferential average of the product ...

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  • Figure 6.31 from A design study of radial inflow

    DOI: 10.1115/1.2836650 Corpus ID: 123561206. A design study of radial inflow turbines with splitter blades in three-dimensional flow @article{Tjokroaminata1996ADS, title={A design study of radial inflow turbines with splitter blades in three-dimensional flow}, author={W. D. Tjokroaminata and C. Tan and W. Hawthorne}, journal={Journal of Turbomachinery-transactions of The Asme}, year={1996 ...

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  • Dimensional accuracy and surface characteristics of

    Three-dimensional deviation at each cylinder location was lowest in the left canine region, and deviations increased with distance from this site in all groups. The qualitative features of casts varied among 3D printers in terms of shape, surface smoothness, and edge sharpness.

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  • Standardization of three-dimensional pose of

    2021-3-6 · The cone-beam computerized tomography scan (Gendex GXCB-500, Gendex Dental Systems) provides a finely-detailed three-dimensional overview of the bony architecture around the implants inserted in it. The following set of default parameters have been applied in the acquisition of scans: 120 kV, 30.89 mAs, 0.2 mm × 0.2 mm × 0.2 mm isotropic ...

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  • A three-dimensional numerical study of the Magnus

    2012-12-11 · A three-dimensional numerical study of the Magnus wind turbine with different blade shapes ... “ Heat and fluid flow across a rotating cylinder dissipating uniform heat flux in 2D laminar flow regime,” Int. J. Heat Mass Transfer ... “ Simulations of three-dimensional vertical-axis turbines for communications applications,” Wind Eng. 36 ...

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  • Turbines | L&T MHI Power Turbine Generators | L&T

    Turbines. LMTG offers state-of-the-art Steam Turbines for Subcritical and Supercritical Units -with capacities ranging from 150 - 300 MW for Subcritical units and 660 - 1000 MW for Super-critircal & Ulta Super-critical units. Our manufacturing facility at Hazira offers cutting edge technology and machines backed by team of specialist Engineers ...

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  • Three-dimensional spectral proper orthogonal

    2021-2-9 · The flow around a seal-vibrissa-shaped cylinder (SVSC) is numerically investigated using the large eddy simulation framework at a Reynolds number of 20 000. Compared with a circular cylinder (CC), the wake of the SVSC presents more stable three-dimensional separation, a longer vortex formation length, and a weaker vortex strength.

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  • Three-dimensional free vibration analysis of triclinic ...

    2019-2-1 · Then, the non-dimensional wave phase velocity ϒ = Ψ ξ versus the non-dimensional axial wave number ξ = ζ a were depicted in Fig. 2 and Fig. 3 for a relatively thin (b − a) a = 0.05 and thick (b − a) a = 0.5 hollow cylinder, respectively. The short circuit boundary condition is …

    Get Price
  • DOOSAN HEAVY INDUSTRIES & CONSTRUCTION

    2017-4-3 · Gas Turbines have played a leading role in power generation with high performance, reliability, fuel flexibility, low emissions and compactness ... • Combustors removable with insulated cylinder cover in place. ... The compressor blade path is designed using a three-dimensional flow-field analysis computer program.

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  • Flow Past a Forced Oscillating Cylinder: A Three ...

    2019-11-11 · In this paper, we conducted a three-dimensional investigation of flow past a cylinder undergoing forced oscillation. The flow configuration is similar to the work of Blackburn & Henderson (1999) [1], in which Reynolds number equals to 500 and a fixed motion amplitude of A/D = 0.25. The oscillation frequencies are varied in the range near to the natural shedding frequency of a stationary cylinder.

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  • Direct numerical simulations of three-dimensional flows ...

    2021-6-18 · Direct numerical simulations of three-dimensional ows past obstacles with a vortex penalization method C. Mimeaua,1, G.-H. Cottetb,2, I. Mortazavic,2, aConservatoire National des Arts et M etiers, Laboratoire DynFluid, 151, boulevard de l’H^opital, 75013 Paris, FRANCE

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  • Standardization of three-dimensional pose of

    2021-3-6 · The cone-beam computerized tomography scan (Gendex GXCB-500, Gendex Dental Systems) provides a finely-detailed three-dimensional overview of the bony architecture around the implants inserted in it. The following set of default parameters have been applied in the acquisition of scans: 120 kV, 30.89 mAs, 0.2 mm × 0.2 mm × 0.2 mm isotropic ...

    Get Price
  • Three-Dimensional Unsteady Hydrodynamics of Tidal

    Three-Dimensional Unsteady Hydrodynamics of Tidal Turbines (Doctoral Dissertation), Engineering, University of Cambridge. Abstract ...

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  • A three-dimensional numerical study of the Magnus

    Selections of the cylinder implant neck taper and implant end fillet for optimal biomechanical properties: a three-dimensional finite element analysis. Kong L(1), Sun Y, Hu K, Liu Y, Li D, Qiu Z, Liu B.

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  • Selections of the cylinder implant neck taper and

    The Journal of Biomedical Optics (JBO) is an open access journal that publishes peer-reviewed papers on the use of novel optical systems and techniques for improved health care and biomedical research.

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  • Three-dimensional terahertz pulse imaging of dental

    2019-11-28 · three-dimensional dental imaging through virtual study models tutor: prof. chiarella sforza pres. scuola di dottorato: prof. roberto weinstein tesi di dottorato di luis tomas huanca ghislanzoni matr n° r08745 anno accademico 2012-2013 . ii index chapter 1 - general introduction 1

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  • THREE-DIMENSIONAL DENTAL IMAGING THROUGH

    2019-4-9 · A DESIGN STUDY OF RADIAL INFLOW TURBINES IN THREE-DIMENSIONAL FLOW by Yi-Lung Yang B.S., National Taiwan University (1983) M. S., …

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  • dspace.mit.edu

    Twelve three-dimensional finite element models with an implant of different thread shape were created: 1mm, 2mm, and 3mm square designs (S-1, S-2, and S-3); 90 o , 60 o , and 30 o V-shaped ...

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  • Comparative study of 12 thread shapes of dental implant ...

    2019-11-11 · In this paper, we conducted a three-dimensional investigation of flow past a cylinder undergoing forced oscillation. The flow configuration is similar to the work of Blackburn & Henderson (1999) [1], in which Reynolds number equals to 500 and a fixed motion amplitude of A/D = 0.25. The oscillation frequencies are varied in the range near to the natural shedding frequency of a stationary cylinder.

    Get Price
  • Flow Past a Forced Oscillating Cylinder: A Three ...

    2012-5-24 · Phase I experiments. 1- Tethers, 2-Horizontal legs, 3-Instrumentation cylinder, 4- Buoyant tank, 5-Tower, 6-Nacelle and rotor weight, 7-Nacelle accelerometer and inclinometer, 8-Center of gravity accelerometer and wireless transmitter, 9-Ballast weights. The …

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  • Three Dimensional Flow in Radial-Inflow Turbines |

    2015-3-23 · Zangeneh-Kazemi, M, Dawes, WN, & Hawthorne, WR. 'Three Dimensional Flow in Radial-Inflow Turbines.' Proceedings of the ASME 1988 International …

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  • OSA | Three-dimensional beam profiling used to ...

    Two-dimensional (2D) beam profiling is an emerging technique used to characterize the beam homogeneity in dental light-curing units (LCUs). This project developed a method to combine multiple 2D beam profiles that had been measured along the beam path to create a 3D profile of the beam. This allowed a quantitative investigation of beam divergence and homogeneity at different distances from …

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  • Three-Dimensional Wakes of Simulated Wind

    2012-5-17 · Three-Dimensional Wakes of Simulated Wind Turbines. ... Experimental analysis of the flow field around horizontal axis tidal turbines by use of scale mesh disk rotor simulators. Ocean Engineering, Vol. 37, No. 2-3. Comparison between CFD simulations and experiments for predicting the far wake of horizontal axis tidal turbines.

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  • DOOSAN HEAVY INDUSTRIES & CONSTRUCTION

    2017-4-3 · Gas Turbines have played a leading role in power generation with high performance, reliability, fuel flexibility, low emissions and compactness ... • Combustors removable with insulated cylinder cover in place. ... The compressor blade path is designed using a three-dimensional flow-field analysis computer program.

    Get Price
  • Three Dimensional Dental Anatomy Software

    Teaching Oral Anatomy using Digital Interactive Dental Models. Tooth Explorer TM is a three dimensional dental software program designed to teach oral anatomy in a highly efficient digital environment. This program provides dentistry students with an interactive, three-dimensional dental library of …

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  • Three Dimensional Optimization for Subsonic Axial

    2018-7-8 · American Institute of Aeronautics and Astronautics 12700 Sunrise Valley Drive, Suite 200 Reston, VA 20191-5807 703.264.7500

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  • Direct numerical simulations of three-dimensional flows ...

    2021-6-18 · Direct numerical simulations of three-dimensional ows past obstacles with a vortex penalization method C. Mimeaua,1, G.-H. Cottetb,2, I. Mortazavic,2, aConservatoire National des Arts et M etiers, Laboratoire DynFluid, 151, boulevard de l’H^opital, 75013 Paris, FRANCE

    Get Price
  • Flow Past a Forced Oscillating Cylinder: A Three ...

    2019-11-11 · In this paper, we conducted a three-dimensional investigation of flow past a cylinder undergoing forced oscillation. The flow configuration is similar to the work of Blackburn & Henderson (1999) [1], in which Reynolds number equals to 500 and a fixed motion amplitude of A/D = 0.25. The oscillation frequencies are varied in the range near to the natural shedding frequency of a stationary cylinder.

    Get Price
  • Three-dimensional CFD simulation and

    Wind turbines release aerodynamic noise that is one of the most barriers in wind energy development and public acceptance. Aeroacoustics is the noise generated by the interaction of blades, specifically the tip and trailing edge, with inflow turbulence structures and subsequent boundary layer separation and vortex shedding in the wake region. The objective of this study is to analyze the ...

    Get Price
  • Quasi-three-dimensional calculation of flow in blade ...

    The flow in turbomachines is currently calculated either on the basis of a single successive solution of an axisymmetric problem (see, for example, [1-A]) and the problem of flow past cascades of blades in a layer of variable thickness [1, 5], or by solution of a quasi-three-dimensional problem [6–8], or on the basis of three-dimensional models of the motion [9–11]. In this paper, we ...

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  • Three-dimensional dental X-ray imaging by

    A novel three-dimensional dental X-ray imaging method is introduced, based on hybrid data collected with a dental panoramic device. Such a device uses geometric movement of the X-ray source and detector around the head of a patient to produce a panoramic image, where all teeth are in sharp focus and details at a distance from the dental arc are blurred.

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  • Cone-Beam Three-Dimensional Dental Volumetric

    2017-12-31 · Imaging methods are of great importance for diagnosis and treatment in dentistry. With technological advances, great progress has been made in these methods. Over time, 3-dimensional (3-D) imaging has replaced 2-dimensional, thereby providing examination of objects in all directions. Of these methods, which play an important role in the clinical evaluation of patients, cone-beam computed ...

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  • Using three-dimensional geometric morphometric

    2020-11-1 · Treeshrews are small, Indomalayan mammals closely related to primates. Previously, three-dimensional geometric morphometric analyses were used to assess patterns of treeshrew lower second molar morphology, which showed that the positions of molar landmarks covary with …

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  • Three-Dimensional Finite Element Analysis of Dental ...

    The three-dimensional finite element analysis is performed on dental implant models, with compressive forces of 50, 100, and 150 N, and a shear force of 20 N with the force angle of 60 degrees with the normal line respectively. The Stress and displacement analysis is conducted at four different areas (abutment, implant, cortical bone, and ...

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  • Three-dimensional surgical guide approach to

    2020-12-29 · Three-dimensional surgical guide approach to correcting skeletal Class II malocclusion with idiopathic condylar resorption ... His maxillary dental midline was coincident with the facial midline, while the mandibular dental midline deviated 1 mm to the right. ... the guiding template on the right side connected to the guiding splint by the ...

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  • Three-dimensional CFD simulation and aeroacoustics ...

    Wind turbines release aerodynamic noise that is one of the most barriers in wind energy development and public acceptance. Aeroacoustics is the noise generated by the interaction of blades, specifically the tip and trailing edge, with inflow turbulence structures and subsequent boundary layer separation and vortex shedding in the wake region. The objective of this study is to analyze the ...

    Get Price
  • Scale model experiments on floating offshore wind

    2012-5-24 · Phase I experiments. 1- Tethers, 2-Horizontal legs, 3-Instrumentation cylinder, 4- Buoyant tank, 5-Tower, 6-Nacelle and rotor weight, 7-Nacelle accelerometer and inclinometer, 8-Center of gravity accelerometer and wireless transmitter, 9-Ballast weights. The …

    Get Price
  • Conferences

    “A Biomimetic Ultrasonic Whistle for Use as a Bat Deterrent on Wind Turbines”, The Wind Energy Research Workshop, 2016, Lowell, MA. “VIV of a Flexible Cylinder: Three-dimensional Response Reconstruction from Limited Localized Measurement Points”, The 68th American Physical Society, Division of Fluid Dynamics, 2015, Boston, MA.

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  • Illustrative Mathematics Geometry, Unit 5.2

    2021-7-1 · 23. Jinlan Gou, Xin Yuan and Xinrong Su, A high-order element based adaptive mesh refinement strategy for three-dimensional unstructured grid, International Journal for Numerical Methods in Fluids, 2017, 85, pp. 538-560. 24.

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