A5013387551- Fluid Dynamics and Turbulent Flows
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Vibration Analysis
- Nanofluid Flow and Heat Transfer
- Heat Transfer Mechanisms
- Heat Transfer and Optimization
- Computational Fluid Dynamics and Aerodynamics
- Solar Thermal and Photovoltaic Systems
- Wind and Air Flow Studies
- Fluid Dynamics Simulations and Interactions
- Vibration and Dynamic Analysis
- Plant Water Relations and Carbon Dynamics
- Aerodynamics and Acoustics in Jet Flows
- Nuclear reactor physics and engineering
- Particle Dynamics in Fluid Flows
- Nuclear Engineering Thermal-Hydraulics
- Advanced Numerical Methods in Computational Mathematics
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Thin Films
- Combustion and flame dynamics
- Reservoir Engineering and Simulation Methods
- Cyclone Separators and Fluid Dynamics
Universidade Federal de Uberlândia
2014-2024
In the present paper a general scheme for three types of thermal boundary conditions is proposed and applied to natural convection diffusion problems. The numerical algorithm, denominated IMERSPEC, consists application Fourier pseudospectral method, where Dirichlet, Neumann, or Robin are modeled through immersed method (IBM). methodology impose on interface transmit distribution functions. Source terms added two-dimensional Navier-Stokes energy equations Cartesian mesh. Manufactured...
The presence of particles with a small but finite size, suspended in viscous fluids low volumetric concentrations, is observed many applications. present study focuses on the tridimensional and incompressible lid-driven flow Newtonian through application immersed boundary method Euler–Lagrange approach. These methods are used to numerically predict three-dimensional particle motion by considering nearly neutrally buoyant conditions as well all relevant elementary processes (drag lift forces,...
The natural convection at low and moderate Rayleigh numbers (Ra) incylindrical horizontal annuli with imposed temperatures in both surfaces isnumerically studied. This flow inside concentric cylinders classic configuration has a wide range of practical technological applications, which justifies its growing studies efforts. In this work, the governing equations are discretized by volume finite technique over staggered grid, second-order accuracy space time. pattern is presented several...
Abstract The current manuscript addresses fluid–structure interaction (FSI) problems to the analysis of vortex-induced vibration (VIV), employing methodology designated as IMERSPEC2D. approach seamlessly integrates Fourier pseudo-spectral method (FPSM) and immersed boundary (IBM) solve Navier–Stokes (NS) continuity equations. Simultaneously, effects cylindrical structure, involving 1 2 degrees freedom (d.o.f.) are simulated, by incorporating structural motion equations into NS via IBM source...
The immersed boundary method has attracted considerable interest in the last few years. is a computational cheap alternative to represent boundaries of geometrically complex body, while using cartesian mesh, by adding force term momentum equation. advantage this that bodies any arbitrary shape can be added without grid restructuring, procedure which often time-consuming. Furthermore, multiple may simulated, and relative motion those accomplished at reasonable cost. numerical platform...
Abstract The present paper concerns large‐eddy simulations of turbulent downhole flow for six Reynolds numbers and five Taylor numbers. Swirl parameter within the range (0‐0.98), which compares effects rotation rates, was evaluated. In this work, fluid is injected through drill pipe then accelerated by nozzle. As discharges from nozzle, a high speed jet generated in region, impinges bottomhole surface finally flows out region annulus. nozzle represented sudden contraction. dynamic sub‐grid...
A simplified fluid-structure interaction model, consisting of a cylinder tethered by spring system interacting dynamically with an incompressible two-dimensional lid-driven cavity flow, is solved using the immersed boundary method.Results show that when forces are weaker than fluid drag force, springs stretch freely and motion direct result dynamics action.For higher values forces, reaches maximum displacement, induce to oscillatory movement damped forces.Subsequently amplitude displacement...
This paper presents a numerical study of fluid flow and natural convection inside cubical cavities using the finite volume method with second order schemes. Cubical various sizes three different thermal configurations were considered, where two opposite vertical walls are isothermal other either adiabatic or conducting (with linear temperature variation). The simulations performed for air gases Prandtl number 0.71 under influence variable Rayleigh numbers covering range 103 - 107. effects in...
Resumo. Problemas envolvendo a dinâmica dos fluidos com transferencia de calor sao cada vez mais presentes nos diversos ramos industriais. Desta forma, compreender e quantificar corretamente os processos nestes ambientes suma importância, pois implica em economia energetica melhor aproveitamento recursos naturais. O presente trabalho visa promover uma analise numerica bidimensional sobre o problema por conveccao natural cilindros concentricos na presenca pares discretos fontes sumidouros...