全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Humberto Araujo Machado , Sonia Fonseca Costa e Silva , Edison Bittencourt
来源:[J].Journal of the Brazilian Society of Mechanical Sciences and Engineering(IF 0.234), 2017, Vol.39 (5), pp.1453-1467Springer
摘要:This work is an extension of a previous work where the two-dimensional computational simulation of the ablative process in composites for rocket thermal protection systems was presented. The numerical method employs an interface tracking method to simulate the moving front proble...
作者:Humberto Araujo Machado
来源:[J].Journal of the Brazilian Society of Mechanical Sciences and Engineering(IF 0.234), 2014, Vol.36 (4), pp.847-857Springer
摘要:Abstract(#br)Fibrous thermal insulation materials are vastly employed in the thermal protection system of recoverable space vehicles. The accurate determination of their apparent thermal conductivity allows for an adequate sizing of the thermal protection system of space vehicles...
作者:Humberto Araujo Machado , Ricardo Fortes de Miranda
来源:[J].Numerical Heat Transfer, Part A: Applications(IF 1.803), 2003, Vol.44 (3), pp.299-313Taylor & Francis
摘要:The rotation in cylindrical heat pipes becomes important at high angular velocity, when recirculation cells appear, grow and scatfter in the vapor phase from the evaporator section, reducing the efficiency of the heat pipe and obstructing the phase change. The 1-D formulations ar...
作者:Marcos de Souza , Ricardo Fortes de Miranda , Humberto Araujo Machado
来源:[J].International Journal of Numerical Methods for Heat & Fluid Flow(IF 1.093), 2003, Vol.13 (8), pp.1079-1096Emerald
摘要:The generalized integral transform technique (GITT) is an hybrid numerical-analytical method that has been successfully applied in convection-diffusion problems, where the original potentials are replaced by eigenexpansion series, and the system of partial differential equations ...
作者:Humberto Araujo Machado
来源:[J].Hybrid Methods in Engineering, 2000, Vol.2 (4)Begell House
摘要:The Generalized Integral Transform Technique (GITT) is employed to solve convection-diffusion problems in fluids with variable physical properties. In this case, some strong nonlinear terms are observed in the formulation where the analytical transform is not possible. With the s...
作者:Humberto Araujo Machado , Lucilia Batista Dantas
来源:[J].Hybrid Methods in Engineering, 2001, Vol.3 (2&3)Begell House
摘要:In some important engineering applications of the transport equations, it is common to find discontinuities of several types within the domain. Such discontinuities demand specific treatment by the majority of numerical methods, as coordinate transformation, grid refinement, etc....
作者:Humberto Araujo Machado , Renato M. Cotta
来源:[J].Hybrid Methods in Engineering, 1999, Vol.1 (2)Begell House
摘要:The generalized integral transform technique (GITT) is employed in the hybrid numerical-analytical solution of the compressible boundary-layer equations in the streamfunction-only formulation, as written for the laminar flow of a Newtonian fluid within a parallel-plates channel. ...

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