Particle Motion
Mostrando 1-12 de 101 artigos, teses e dissertações.
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1. Proposta de atividade para o estudo de movimentos bidimensionais nos cursos introdutórios de Física
Abstract Neste artigo apresento uma proposta sobre a utilização do algoritmo de Verlet no estudo de lançamentos bidimensionais nos cursos universitários introdutórios de Física. A proposta visa, ao mesmo tempo que estudamos os processos dinâmicos sobre uma partícula movendo-se sob a influência de uma força conhecida, analisar os conceitos matemáti
Rev. Bras. Ensino Fís.. Publicado em: 01/08/2019
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2. A novel discussion on centripetal force
Abstract In order to enrich the field of Newtonian mechanics, some novel approaches for the derivation of the expression for the centripetal force have been offered in this paper. The paper starts with a lucid and easily readable discussion of how the centripetal force arises when a particle undergoes uniform circular motion and it ends with a systematic pre
Rev. Bras. Ensino Fís.. Publicado em: 06/08/2018
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3. 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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4. Experimental Investigation on Limit Cycle Wing Rock Effect on Wing Body Configuration Induced by Forebody Vortices
ABSTRACT The purpose of this paper is to present the aerodynamic and flow characteristics of a slender body with a 30° swept wing configuration undergoing a limit cycle oscillation using a synchronous measurement and control technique of wing rock/particle image velocimetry/dynamic pressure associated with the time history of the wing rock motion. The exper
J. Aerosp. Technol. Manag.. Publicado em: 2016-09
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5. Rapid Generation of Particle Packs at High Packing Ratios for DEM Simulations of Granular Compacts
Abstract In this work we present a simple, fast technique for generating particle packs at high packing ratios aiming at the simulation of granular compacts via the discrete element method (DEM). We start from a random sequence addition particle generation algorithm to generate a "layer" of non-overlapping spherical particles that are let to evolve dynamical
Lat. Am. j. solids struct.. Publicado em: 2016-01
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6. Application of Computational fluid dynamic in aluminum refining through pneumatic injection of powders
Magnesium removal process from molten aluminum using particles of silica sand was studied from a hydrodynamic point of view using computational fluid dynamics (CFD). The gas-liquid flow was modeled by a model of the Euler type for both gas and liquid phase transport. Newton´s law of motion was used to describe the subsurface motion of injected solid particl
Mat. Res.. Publicado em: 2014-12
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7. Non-linear dynamics of a hanging rope
Two-dimensional motion of a hanging rope is considered. A multibody system with elastic-dissipative joints is used for modelling of the rope. The mathematical model based on the Lagrange formalism is presented. Results of some numerical simulations are shown for the mechanical system with kinematic excitation. Basic tools are used to qualify dynamics of the
Lat. Am. j. solids struct.. Publicado em: 2013-01
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8. Experimentação física do escoamento gás-líquido em uma coluna de bolhas retangular utilizando a técnica PIV e a técnica de sombras SHADOW / Gas- liquid experimentation in a rectangular bubble column using PIV and Shadow techniques
Bubble columns are multiphase contact devices for mass and heat transfer, wich are intensively used in different industrial areas. Flow and turbulence in these equipments are induced by the bubble rise motion. The hydrodynamics and bubble behavior in a homogeneous bubbly flow regime was analyzed in a rectangular laboratory-scale bubble column (50 x 20 x 220
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/07/2012
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9. FORMULACÃO UNIFICADA PARA MODELOS CINETICOS DERIVADOS DA EQUAÇÃO DE BOLTZMANN COM CONDIÇÕES DE CONTORNO GENERALIZADAS / UNIFIED FORMULATION FOR KINETIC MODELS DERIVATIVES OF BOLTZMANN EQUATION WITH GENERALIZED BOUNDARY CONDITIONS
In this paper, we present numerical results obtained from the FORTRAN language for physical quantities of interest such as velocity prole, prole, heat ow rate, particle ow rate,heat ux and pressure tensor component. The gas ow occur in the direction parallel to thesurface the gas is conned because of a constant gradient of pressure and a constant gradient of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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10. Aspectos clássicos da cosmologia inflacionária.
The last decades have been of major developments in cosmology since the advent of cosmological inflation as a solution to the problems of standard cosmological model. As one of the main paradigms of modern cosmology, to study the classical theory of inflation is the main objective of this work. Before, we present the main evidences of universal expansion and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2011
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11. Editorial
The motion of a falling drop whose mass grows by accretion is studied with Newtonian methods to the point of finding the position as a function of time. The equation of motion applied is the equation of motion of continuum mechanics in its Eulerian or space formulation. We study three examples of laws of accretion: mass growing linearly with time, mass growi
Revista Brasileira de Ensino de Física. Publicado em: 2011-09
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12. Effect of particle clusters on turbulence modulations in liquid flow laden with fine solid particles
Studies on particle distributions and interactions between the particles and the liquid turbulence are extremely significant and can help to improve efficiency of industrial processes and final product quality. In this paper, the particle distribution and the particle - turbulence interaction in the solid - liquid flow were investigated in detail by a numeri
Brazilian Journal of Chemical Engineering. Publicado em: 2011-09