Free Surface Flow
Mostrando 1-12 de 115 artigos, teses e dissertações.
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1. Silicon carbide hollow fiber membranes developed for the textile industry wastewater treatment
Abstract In order to reduce the impacts of the industrial effluent on the environment, silicon carbide hollow fiber membranes were prepared by the precipitation-immersion technique and sintered at 1450 and 1500 °C. The membranes were characterized by X-ray diffraction, their surface structure was characterized by scanning electron microscopy and atomic forc
Cerâmica. Publicado em: 2021-06
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2. Physical and mathematical modeling of inclusion behavior in a tundish with gas curtain
Abstract Gas injection in the tundish has been considered as an alternative to optimizing inclusion removal from steels. In the present study, physical and mathematical modeling were used to investigate the effect of gas injection in the tundish on the inclusion removal efficiency. The physical model is a 1/3 reduced scale of an industrial two-strand tundish
REM, Int. Eng. J.. Publicado em: 2020-12
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3. Childhood T-cell acute lymphoblastic leukemia in a single Latin American center: impact of improved treatment scheme and support therapy on survival
ABSTRACT Background and objective T-cell acute lymphoblastic leukemia (T-ALL) in children represents a high-risk disease. There is a lack of studies assessing the outcome of T-ALL in Hispanic populations, in which it is a rare malignancy. We report the characteristics and results of treatment for childhood T-cell ALL in children over 14 years at a Latin Ame
Hematol., Transfus. Cell Ther.. Publicado em: 2020-10
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4. On-Flow Ligand Screening Assay Based on Immobilized Nucleoside Diphosphate Kinase B from Homo sapiens
We describe an on-flow zonal affinity-based chromatography assay to screen ligands for the nucleoside diphosphate kinase B enzyme (NME2) from Homo sapiens. For the first time, we have covalently immobilized NME2 on the surface of an open fused silica capillary reactor (NME2-ICER) and placed the reactor before the analytical column, which resulted in a two-di
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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5. Experimental study on the self-suspending proppant-laden flow in a single fracture
Abstract The flow of proppant-laden fluid (PLF) in the fracture is a typical problem of solid-liquid two phase flow, and the transportation and deposition of proppants are essential to determine the flow conductivity of hydraulic fracturing. The self-suspending proppant with a water soluble surface coating is a newly presented supporting material and has gre
REM, Int. Eng. J.. Publicado em: 2018-04
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6. Computational Investigation on the Effects of Two-Way Wing Morphing Strategy in the Critical Mach Number
ABSTRACT: The elasto-flexible wing morphing is an advanced methodology to achieve higher lift-to-drag (L/D) ratio for the subsonic wing configurations at the given flow conditions. The present article describes mechanisms of continuous morphing of a swept back wing for achieving effective delay in the critical Mach number (Mcr) distribution over the wing sur
J. Aerosp. Technol. Manag.. Publicado em: 08/03/2018
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7. Numerical Study of Wake Characteristics in a Horizontal-Axis Hydrokinetic Turbine
ABSTRACT Over the years most studies on wake characteristics have been devoted to wind turbines, while few works are related to hydrokinetic turbines. Among studies applied to rivers, depth and width are important parameters for a suitable design. In this work, a numerical study of the wake in a horizontal-axis hydrokinetic turbine is performed, where the ma
An. Acad. Bras. Ciênc.. Publicado em: 01/12/2016
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8. CO2 Corrosion in the Region Between the Static and Turbulent Flow Regimes
This paper discusses the influence of the flow of a fluid from the static regime to the turbulent in CO2 corrosion experienced by low carbon steel. A more comprehensive approach to CO2 corrosion implies taking the free flowing velocity and shear stress of the fluid and the surface roughness of the material into consideration. Low carbon steel samples in two
Mat. Res.. Publicado em: 2015-04
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9. NOVEL SIMILARITY-SOLUTION WHICH IS APPLICABLE FOR FREE CONVECTION OVER A BODY OF ARBITRARY SHAPE: THERMAL NON-EQUILIBRIUM IN A POROUS MEDIUM
Abstract The study of the natural convection flow and heat transfer from hot surfaces in a porous medium has been of considerable interest in energy-related engineering problems. This paper is concerned with the free convection heat transfer over an arbitrary hot surface in a porous medium. It is assumed that the fluid and solid phases are not in local therm
Braz. J. Chem. Eng.. Publicado em: 2015-03
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10. A New Coupled Free Wake-CFD Method for Calculation of Helicopter Rotor Flow-Field in Hover
ABSTRACT: This paper concerns a new coupled free wake-CFD method for proper calculation of aerodynamic loads on a two bladed helicopter rotor in hovering flight. Loading is computed by solving the three dimensional Euler equations in a rotating coordinate system. However, since direct simulation of the tip vortices and wake requires a very fine grid, the rot
J. Aerosp. Technol. Manag.. Publicado em: 2014-06
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11. Low-temperature plasma nitriding of sintered PIM 316L austenitic stainless steel
This work reports experimental results on sintered PIM 316L stainless steel low-temperature plasma nitriding. The effect of treatment temperature and time on process kinetics, microstructure and surface characteristics of the nitrided samples were investigated. Nitriding was carried out at temperatures of 350, 380, 410 and 440 ºC , and times of 4, 8 and 16
Mat. Res.. Publicado em: 20/05/2014
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12. Verification and validation in CFD for a free-surface gas-liquid flow in channels
This work deals with experimental and numerical studies of a 3-D transient free-surface two-phase flow in a bench-scale channel flow. The aim was to determine how well the homogeneous model can predict the fluid dynamics behavior and to validate the model. The model was validated with experimental data acquired for two hydrodynamic situations. The mathematic
Braz. J. Chem. Eng.. Publicado em: 2013-06