1. Numerical simulation of three-dimensional flows over aerospace configurations.

The objective of this project is to study three dimensional aerodynamic flows over realistic aerospace configurations, such as the first Brazilian Satellite Launcher (VLS) in its first stage flight form. In order to achieve this objective, computational fluid dynamics and three dimensional adaptive mesh refinement techniques are used. The project focus in fi

Publicado em: 2002

2. Further Development and Application of High-Order Spectral Volume Methods for Compressible Flows

Abstract: The present paper investigates the high-order spectral finite volume method with emphasis on applicability aspects for compressible flows. The intent is to improve the understanding and implementation of numerical techniques related to high-order unstructured grid schemes. In that regard, a hierarchical moment limiter and high-order mesh capability

J. Aerosp. Technol. Manag.. Publicado em: 20/07/2017

3. An enriched meshless finite volume method for the modeling of material discontinuity problems in 2D elasticity

Abstract A 2D formulation for incorporating material discontinuities into the meshless finite volume method is proposed. In the proposed formulation, the moving least squares approximation space is enriched by local continuous functions that contain discontinuity in the first derivative at the location of the material interfaces. The formulation utilizes sp

Lat. Am. j. solids struct.. Publicado em: 26/04/2018

4. A model based on the finite-volume theory for the analysis linear viscoelastic heterogeneous materials. / Análise de estruturas de materiais compósitos viscoelásticos lineares através da teoria de volumes finitos.

The present work extends the Parametric Formulation of the Finite-Volume Theory to the case of heterogeneous materials with time-dependent behavior. Such a theory has already proved to be an efficient alternative to the Finite Element Method in the modeling of linear elastic heterogeneous materials. Firstly, general expressions for linear viscoelasticity are

Publicado em: 2010

5. Aspects of finite element and finite volume equivalence and a posteriori error estimation in polymer melt flow

In this work, aspects of discretization errors associated with finite volume (FV) and equivalent finite element (FE) modelling strategies are discussed within the framework of polymer melt flow. The computational approaches are based on the generalized Newtonian model in conjunction with Cross constitutive equation. The numerical examples illustrate one and

Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-09

6. An axisymmetric finite volume formulation for the solution of heat conduction problems using unstructured meshes

In this work, a finite volume formulation developed for two-dimensional models is extended to deal with axisymmetric models of heat conduction applications. This formulation uses a vertex centered finite volume method and it was implemented using an edge-based data structure. The time and domain discretization using triangular meshes is described in details,

Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-12

7. Interpolation functions analysis in finite volume method / Análise de funções de interpolação no método de volumes finitos

In this work, the mathematical and computer modeling in the analysis of the interpolation functions in the Finite Volume Method was developed. The equations were integrated in the control of volume in which frontiers the advective and diffuse flows must be evaluated. The interpolation function, which main objective is to connect the nodal points, was used to

Publicado em: 2006

8. Finite element procedure for stress amplification factor recovering in a representative volume of composite materials

Abstract Finite element models are proposed to the micromechanical analysis of a representative volume of composite materials. A detailed description of the meshes, boundary conditions, and loadings are presented. An illustrative application is given to evaluate stress amplification factors within a representative volume of the unidirectional carbon fiber co

J. Aerosp. Technol. Manag.. Publicado em: 2011-12

9. Two-dimensional control volume modeling of the resin infiltration of a porous medium with a heterogeneous permeability tensor

Resin Transfer Molding (RTM) is a polymer composite processing technique widely used in the aeronautics and automotive sectors. This paper describes the numerical simulation of the RTM process where Darcy’s law was used for the mathematical formulation of the problem. A control volume finite element method was used for the determination of pressure gradien

Publicado em: 2011

10. The use of an axisymmetric formulation of the Finite Volume Method for the thermal analysis of the retina and ocular tissues following implantation of retinal prosthesis

This study analyzes the heat transfer in human eyes following implantation of retinal prostheses using an axisymmetric formulation of the Finite Volume Method. The model used consisted of a vertex centered unstructured grid finite volume method in an edge-based data structure and an explicit time integration. The results of the finite volume thermal analysis

J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09

11. An unstructured grid implementation of high-order spectral finite volume schemes

The present work implements the spectral finite volume scheme in a cell centered finite volume context for unstructured meshes. The 2-D Euler equations are considered to represent the flows of interest. The spatial discretization scheme is developed to achieve high resolution and computational efficiency for flow problems governed by hyperbolic conservation

Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12

12. Avaliação e otimização da transferência de calor radiativa em fornalhas corrugadas de geradores vapor fogotubular

In this work, the radiative heat transfer was evaluated in corrugated cylindrical surfaces similar the surfaces employed in corrugated furnaces at a fire tube steam generator using the zonal and finite volume methods, with the modeling of corrugated surfaces by cubic spline interpolation. Associated with this study was realized the optimization of these corr

Repositório Institucional da UFU. Publicado em: 2014