Three-dimensional Navier-Stokes simulations of
2012-5-23 · Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. Part I - Methodology. Man Mohan Rai. Man Mohan Rai. NASA Ames Research Center, Moffett Field, …
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2012-5-23 · Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction. Part I - Methodology. Man Mohan Rai. Man Mohan Rai. NASA Ames Research Center, Moffett Field, …
Get Price2001-8-1 · The 3-dimensional arrangement of teeth in a normal, healthy human dentition follows some general rules. For instance, the occlusal surfaces of teeth in the mandibular arch have been described as tangent to a 100-mm (or 4-inch) sphere, which was first described by Monson about 80 years ago.1 This global spatial disposition, which also has recently been measured in different age groups,2,3 ...
Get Price2003-9-1 · Recently, a more accurate quantification of dental cast information has become possible as a result of advances in the application of three-dimensional (3-D) measuring devices to dentistry.9 Motohashi and Kuroda10 simulated orthognathic surgery on digital images based on 3-D information from dental …
Get Price2010-12-22 · A new blade design method for steam turbines using the fourth-degree NURBS surface was developed. The method enables engineers to easily generate three-dimensional complex blade shapes that have inherently good aerodynamic performance and constraint satisfaction. The developed design method has three steps.
Get Price2014-5-10 · three-dimensional blade. Normally, some three dimensional optimization pro-cesses are used to continue optimizing the design [1–9]. In inverse design method [5], normally Euler equations with modifi ed boundary conditions were used for an iterative procedure to search the desired design.
Get Price2009-5-1 · Materials and Methods: The sample consisted of dental casts obtained from 10 patients treated with extraction of bilateral maxillary first premolars and placement of three palatal miniscrews as anchorage for retraction of the anterior teeth. Dental casts were measured by means of laser surface scanning system, and three-dimensional images were reconstructed.
Get PriceDevelopment of three-dimensional patient face model that enables real-time collision detection and cutting operation for a dental simulator Dental Materials Journal, 2012 Satoshi Yamaguchi
Get Price2021-6-18 · VOXEL-MAN TempoSurg. The VOXEL-MAN TempoSurg simulator for petrous bone surgery is a unique tool for training of surgical access to the middle ear. The system is based on a selection of three-dimensional models of the skull base derived from high-resolution CT data. The trainee sees the scene displayed in stereoscopic mode through a mirror and ...
Get Price2020-12-29 · SSRO causes a sudden repositioning of the condyle in the fossa, which increases the mechanical load in the joint. 1,4 In some patients, the remodeling capacity of their TMJ is exceeded by the functional demands of these sudden changes, and the condyles will resorb. 2 To minimize this problem, it is necessary to maintain the position of the condyle to avoid its abnormal rotation while …
Get Price2014-9-9 · three-dimensional flows in axial turbomachines has been extended; in particular the section concerning the constant specific mass flow design of a turbine nozzle has been clarified and now includes the flow equations for a following rotor row.
Get Price2020-8-28 · The aim of this study was to develop a prototype three-dimensional optical motion capture system based on binocular stereo vision, Back-propagation (BP) Neural Network and 3D compen-sation method for accurate and real-time recording of mandibular movement. A specialized 3D method of compensation to eliminate the involuntary vibration motions by human heart beating and respiration.
Get Price2003-9-1 · Recently, a more accurate quantification of dental cast information has become possible as a result of advances in the application of three-dimensional (3-D) measuring devices to dentistry.9 Motohashi and Kuroda10 simulated orthognathic surgery on digital images based on 3-D information from dental …
Get Price2000-2-22 · Three-dimensional and rotational viscous effects on wind turbine blades are investigated by means of a quasi-3D Navier-Stokes model. The governing equations of the model are derived from the 3-D primitive variable Navier-Stokes equations written in …
Get Price2010-12-22 · Three-Dimensional Design Method for Long Blades of Steam Turbines Using Fourth-Degree NURBS Surface ... fewer man-hours are needed for design work and better proficiency is not a significant requirement. Second, the number of control points and knot vectors are equalized for all aerofoils by inserting or removing knots and fitting the divergent ...
Get Price2020-12-29 · Three-dimensional surgical guide approach to correcting skeletal Class II malocclusion with idiopathic condylar resorption ... an 18-year-old Mongolian man, presented to the Department of Orthodontics, West China School of Stomatology. ... His maxillary dental midline was coincident with the facial midline, while the mandibular dental midline ...
Get Price2014-5-10 · three-dimensional blade. Normally, some three dimensional optimization pro-cesses are used to continue optimizing the design [1–9]. In inverse design method [5], normally Euler equations with modifi ed boundary conditions were used for an iterative procedure to search the desired design.
Get Price2009-5-1 · Objective: To (1) evaluate the stability of palatal rugae as landmarks for superimposition of dental casts and (2) establish a three-dimensional superimposition method of maxillary dental casts for analyzing orthodontic tooth movement. Materials and Methods: The sample consisted of dental casts obtained from 10 patients treated with extraction of bilateral maxillary first premolars and ...
Get PriceRESULTS: The three-dimensional changes in condylar position were insignificant after surgical-orthodontic treatment in either group (P > 0.05).However, in the one-jaw surgery group, there were significant backward rotations of the condyle and ramus on the nondeviated side (P < 0.05), and the condyle on the deviated side rotated inward and forward significantly in the two-jaw surgery group (P ...
Get Price2014-1-29 · Rancho Cordova, Calif., USA – 26 March 2014 – Barco, the worldwide market share leader in digital cinema, further expands its footprint of the Auro 11.1 immersive cinema sound solution, with current installations at over 150 screens around the world and another 300 committed for deployment in 2014, while adding a powerful slate of upcoming ...
Get Price2014-5-9 · The aim of this study was to confirm the effectiveness of a real-time three-dimensional navigation system for use during various oral and maxillofacial surgeries. Five surgeries were performed with this real-time three-dimensional navigation system. For mandibular surgery, patients wore acrylic surgical splints when they underwent computed tomography examinations and the operation to …
Get Price2014-8-7 · Performance of an axial exhaust diffuser downstream of an un-shrouded turbine rotor is computationally analyzed. Three-dimensional analysis of two turbine stage-exhaust diffuser configurations has been performed. In one case, the turbine rotor is shrouded and in the second case, the rotor is un-shrouded.
Get Price2014-11-6 · A three-dimensional model for the initial evolution of dental caries was considered. We took into account the diffusion of two main compounds, hydrogen ions H and calcium ions c, and the reaction at the surface of the enamel prisms.
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Get PriceThe simulation of three-dimensional turbulent flow through a Pump-Turbine draft tube at turbine mode, as a part of the complete pump-turbine calculation is presented in this paper. Four cases were calculated based on the Computational Fluid Dynamics – CFD Methodology (Navier-Stokes equations and the k-ε turbulent model). Those four cases were: 1.
Get Price2020-8-1 · Wang, D. Wang, Y. Zhang, L. Ma, Y. Sun, and P. Lv, An automatic robotic system for three- dimensional tooth crown preparation using a picosecond laser, Lasers in Surgery and Medicine, In press 14. Dangxiao Wang, Yuru Zhang, Jun Wu, “A hierarchical model of motor skill for haptic-assisted virtual reality training,” The International Journal of Virtual Reality, 2010, 9(3):75-81
Get PriceThe combination of ship gas turbine working at special environment, this article pass through the study of base oil and composite additive, developed an application marine environment of the ship gas turbine reducer lubricants. According to comprehensive performance assessment, the product has excellent high-temperature anti-oxidant, anti-wear, corrosion inhibition and anti-foam performance.
Get PriceNumerical investigation of three-dimensional effects in Richtmyer-Meshkov induced mixing processes By V. Tritschler Computational fluid dynamics and experimental study of the hydrodynamics of a gas–solid tapered fluidized bed
Get PriceAbout OOOO. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology is required for all clinicians involved in the diagnosis and treatment of oral and maxillofacial disease. It is the only major dental journal that provides comprehensive and complementary information regarding the diagnosis and treatment of oral and maxillofacial conditions ...
Get PriceThe topics are weak, strong, and global interaction, the locality principle, properties of three-dimensional viscous flow, thermal surface effects, characteristic properties, wall compatibility conditions, connections between inviscid and viscous flow, flow topology, quasi-one- and two-dimensional flows, laminar-turbulent transition and turbulence.
Get PriceA three-dimensional (3D) non-reflecting boundary condition for linearized flow solvers is presented. The unsteady aerodynamic modes at the inlet and outlet (far-field) are numerically determined by solving an eigen problem for the semi-discretized flow equations on a two-dimensional mesh.
Get Price2020-9-3 · Tokyo, Japan –Heart development as it happens in vivo, or in a living organism, is a complex process that has traditionally been difficult to mimic in vitro, or in the laboratory.In a new study, researchers from Tokyo Medical and Dental University (TMDU) developed three-dimensional functional heart organoids from mouse embryonic stem cells that closely resemble the developing heart.
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Get Price3D 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 be seen as a ...
Get Price2012-5-17 · Surrogate based optimization of a Bi-Directional impulse turbine for OWC-WEC: Effect of guide vane lean and stagger angle for pseudo-sinusoidal wave conditions Ocean Engineering, Vol. 226 Investigation of the tip injection for stall control in a transonic compressor with inlet distortion
Get Price2018-5-24 · , “ Three dimensional numerical simulations of a straight-bladed vertical axis tidal turbine,” in 18th Australasian Fluid Mechanics Conference, USB (2012), pp. …
Get PriceIn this paper we investigate the three-dimensional unsteady real-gas flows which occur within Organic Rankine Cycle (ORC) turbines. A radial-inflow turbine stage operating with supersonic vane exit flows (M 1.4) is simulated using a RANS solver which includes real-gas effects.Steady CFD simulations show that small changes in the inducer shape can have a significant effect on turbine ...
Get Price3D 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 be seen as a ...
Get Price2008-12-1 · Over the last decade, the development of in vitro, human, three-dimensional (3D) tissue models, known as human skin equivalents (HSEs), has furthered understanding of epidermal cell biology and provided novel experimental systems.
Get Price2020-6-1 · Methods. We analyzed variation in three-dimensional (3D) facial images of 7057 subjects: 3327 with 396 different syndromes, 727 of their relatives, and 3003 unrelated, unaffected subjects. We ...
Get Price2014-12-24 · A three-dimensional Navier-Stokes code has been used to compute the heat transfer coefficient on two film-cooled turbine blades, namely the VKI rotor with six rows of cooling holes including three rows on the shower head, and the C3X vane with nine rows of …
Get Price2013-10-31 · A three-dimensional (3D) image can be reconstructed from source axial multidetector computed tomography (MDCT) images to visualize orbital tumors. To assess the utility of 3D images in this setting, the 3D images were reconstructed retrospectively for 20 patients with an orbital tumor and compared to two-dimensional (2D) orthogonal MDCT studies.
Get Price2014-12-23 · Water was used as the test liquid with pressure drops of 68.9, 172.3 & 689 kPa, while the air pressure drops were 2.49 & 34.5 kPa. PDPA data were obtained at three different axial distances from the nozzle exit (x = 2.5 (or 7), 17 & 40 mm). In the numerical simulations, the three-dimensional flow field for both air and liquid was computed.
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Get PriceSystems and methods for fabricating three-dimensional objects. The system includes an optical imaging system providing a light source; a photosensitive medium adapted to change states upon exposure to a portion of the light source from the optical imaging system; a control system for controlling movement of the optical imaging system, wherein the optical imaging system moves continuously above ...
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