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2017-1-20 · The boundary layer on the end wall of a turbine blade cascade is subject to cross-stream pressure gradients in the blade passage, which generate a cross-stream velocity component to make it three dimensional. This distorts the turbulence relative to a two-dimensional boundary layer and impacts the end wall heat transfer.
Get Price2013-12-15 · Air turbines are widely used to convert kinetic energy into power output in power engineering. The unsteady performance of air turbines with partial admission not only influences the aerodynamic performance and thermodynamic efficiency of turbine but also generates strong excitation force on blades to impair the turbine safely operating. Based on three-dimensional viscous …
Get PriceInjection of coolant air from a showerhead injection system at the leading edge of a high pressure turbine blade is investigated using a fully implicit three-dimensional finite-volume method on multi-block grids. For various blowing rates, the calculation results for the velocity and pressure fields and turbulence intensity are compared with available experimental data. The present method ...
Get Price2019-6-3 · A three-dimensional printing system is for manufacturing and post-processing a three-dimensional article. The system includes a housing, a blower, and a residue trap. The housing is for surrounding the three-dimensional article during the post process and includes an air inlet and an air outlet. The blower includes an inlet and an outlet. The outlet supplies pressurized air to the air emitting ...
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Get Price2017-9-14 · 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 building.
Get Price2015-3-3 · Rizk, NK, & Mongia, HC. 'Three-Dimensional Gas Turbine Combustor Emissions Modeling.' Proceedings of the ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition.
Get PriceIn 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 near the suction surface and the inlet edge of impeller is minimum, and the ...
Get Price2018-8-30 · The three-dimensional internal and external velocity field is measured using MRV. The fluid temperature field is measured within and outside of the airfoil with MRT and the results are compared with a computational fluid dynamics (CFD) solution to assess the current state of the art for combined MRV/MRT techniques for investigating these ...
Get Price2012-5-3 · A test rig for Steam Turbine Control Valves is operated at the Laboratory of Turbomachinery of the Helmut-Schmidt-University in Hamburg. The control valve unit containing four independently operable valves is a mockup of a typical steam turbine design converted for the use of compressed air with a maximum of 4 bar.
Get PriceA computational fluid dynamics (CFD) procedure has been developed to predict the three-dimensional unsteady flow through a multi-stage axial turbine including the effects of heat transfer. This procedure simultaneously solves the unsteady Reynold's-averaged Navier-Stokes equations for the flow along with the heat conduction equation for the solid.
Get PriceThe 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.
Get Price2010-12-22 · Sivashanmugam, VK, Arabnia, M, & Ghaly, W. 'Aero-Structural Optimization of an Axial Turbine Stage in Three-Dimensional Flow.' Proceedings of the ASME Turbo Expo 2010: Power for Land, Sea, and Air.
Get Price2021-3-24 · Three-dimensional composite electrospun nanofibrous membrane by multi-jet electrospinning with sheath gas for high-efficiency antibiosis air filtration Nanotechnology ( IF 3.874) Pub Date : 2021-03-24, DOI: 10.1088/1361-6528/abeb9a
Get Price2019-7-31 · air turbines with partial admission not only in uences the aerodynamic performance and thermodynamic e ciency of turbine but also generates strong excitation force on blades to impair the turbine safely operating. Based on three-dimensional viscous
Get PriceThe three-dimensional ribbed tube has three-dimensional ribs, and has significant advantages such as good rib shape, high rib height, and variable rib density within the same tube. During the working process, turbulent flow will be generated, and the comprehensive heat exchange performance is unmatched by other enhanced heat exchange elements in the world.
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Get PriceChina portable dental equipment mobile portable dental unit Parameters of mobile portable dental unit: Item Name Portable Dental Unit Brand SUNUP Model BD-408 Voltage 220V/50HZ,110V/60HZ Compressor Power: 550W Air Flow: 130L/min Air Tank Volume: 1L Pressure: 0.8Mpa Noise: 52dB(A) Suction System Power: 390W Liquid Flow: 16L/min Air Flow: 1500L/min Noise: 45dB(A) G.W. 80kg Dimension …
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Get Price2014-8-4 · von Hoyningen-Huene, M, Frank, W, & Jung, AR. 'Three-Dimensional Time-Resolved Flow Field in the First and Last Turbine Stage of a Heavy Duty Gas Turbine: Part II — Interpretation of Blade Pressure Fluctuations.' Proceedings of the ASME Turbo Expo 2000: Power for Land, Sea, and Air.
Get Price2015-6-8 · FROM DENTAL ARCHES TO THREE-DIMENSIONAL FILES Although research has proposed a set of tools to transform plaster models into three-dimensional images (holographic systems, laser technology, scanning for destruction, computed tomography),18,19 laser scanning is the most common method to date (compact
Get PriceWe report experimental realization of a 5-layer three-dimensional (3D) metallic photonic crystal structure that exhibits characteristics of a 3D complete bandgap extending from near-infrared down to visible wavelength at around 650 nm. The structure also exhibits a new kind of non-localized passband mode in the infrared far beyond its metallic waveguide cutoff.
Get Price2017-5-20 · On Wednesday 28 th October, AURO Technologies in conjunction with WOWOW conducted an Advanced Audio Distribution Experiment from Hakuju Hall in Tomigaya with great success. This was the world’s first attempt to hold a piano and drum duo concert by Mayo Nakano and Takanobu Baba, and to live-stream the video and sound using the AURO-3D high-quality immersive audio coding …
Get Price2015-2-18 · Weigand, B, & Harasgama, SP. 'Computations of a Film Cooled Turbine Rotor Blade With Non-Uniform Inlet Temperature Distribution Using a Three-Dimensional Viscous Procedure.' Proceedings of the ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration. The ...
Get Price2012-5-29 · Secondly, the pump suction system should not promote the external introduction, or in-ternal creation, of compressible flow elements, i.e., air, vapor, or gas. Improper design of the suction piping or sump, or inadequate pipe support exterior to the pump, can cause
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Get Price2016-10-31 · Three-dimensional topological insulators are fascinating materials with insulating bulk yet metallic surfaces that host highly mobile charge carriers with locked spin and momentum. Remarkably ...
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Get Price1.3 On pump installations involving suction lift, air pockets in the suction line can be a source of trouble. The suction pipe should be exactly horizontal or with a uniform slope upward from the sump to the pump as illustrated in Fig.CPP7. There should be no high spots where air can collect and cause the pump to …
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