Search Results - "Tullio de Vilhena, Marco"

Pollutant dispersion simulation for low wind speed condition by the ILS method by Carvalho, Jonas C., de Vilhena, Marco Túllio M.B.

“…A semi-analytical Lagrangian particle model to simulate the pollutant dispersion during low wind speed conditions is presented and tested. The method relies to…”
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Solution of the point reactor kinetics equations with temperature feedback by the ITS2 method by Bogado Leite, Sérgio Q., Vilhena, Marco Tullio de, Bodmann, Bardo E.J.

“…The ITS2 method is used to solve the point-reactor kinetics equations in the integral formulation with arbitrary number of delayed neutron groups and Newtonian…”
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Solution of the one-dimensional transport equation by the vector Green function method: Error bounds and simulation by Sauter, Esequia, Azevedo, Fabio Souto, Thompson, Mark, de Vilhena, Marco Tullio Menna Barreto

“…•We solve numerically the anisotropic transport equation using techniques of integral operators.•We present bound error estimates for the GFD method.•We…”
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An iterative langevin solution for turbulent dispersion in the atmosphere by Carvalho, Jonas C., de Vilhena, Marco Túllio M.B., Thompson, Mark

“…In this work we present an alternative hybrid method to solve the Langevin equation and we apply it to simulate air pollution dispersion in inhomogeneous…”
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Criticality by the LTSN Method by BATISTELA, Cláudia Helena F., VILHENA, Marco Túllio de, BORGES, Volnei

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Convergence in transport theory by Pazos, Rubén Panta, de Vilhena, Marco Tullio

“…In this work we prove the convergence of the LTS N method for the steady-state and time-dependent one-dimensional linear transport equation employing the C 0…”
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Convergence of the LTSN method : Approach of C0 semigroups by PANTA PAZOS, R, TULLIO DE VILHENA, M

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Curvilinear Coordinate System Used To Solve Tritium Dispersion In Complex Orographies by Meneghetti, André, Bodmann, Bardo Ernst Josef, Vilhena, Marco Tullio Menna De

“…In this contribution we present progress on research concerning dispersion of tritium around the Angra Nuclear Power Plant (Angra dos Reis, Rio de Janeiro…”
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An analytical solution for the two-dimensional discrete ordinates problem in a convex domain by Zabadal, Jorge, de Vilhena, Marco Tullio, Barichello, Liliane B.

“…The aim of this work consists in the application of the Laplace transform technique to solve analytically the transverse integrated discrete ordinates…”
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Analytical representation of the solution of the point reactor kinetics equations with adaptive time step by Bogado Leite, Sérgio Q., Palma, Daniel A.P., de Vilhena, Marco Tullio, Bodmann, Bardo E.J.

“…An explicit analytical solution is developed for the point reactor kinetics equations in the integral formulation from low-order Taylor series expansions of…”
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Dancoff factors with partial absorption in cluster geometry and their effects on unit cell multiplication by Rodrigues, Letícia Jenisch, Bogado Leite, Sérgio Q., de Vilhena, Marco Tullio

“…In the present work, Dancoff factors for perfectly (Black) and partially (Grey) absorbing fuel rods are calculated by the collision probability method, in…”
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An iterative Langevin solution for contaminant dispersion simulation using the Gram–Charlier PDF by Carvalho, Jonas C., Nichimura, Ézio R., de Vilhena, Marco Túllio M.B., Moreira, Davidson M., Degrazia, Gervásio A.

“…An alternative numerical method to solve the three-dimensional stochastic Langevin equation applied to the air pollution dispersion is proposed and tested. We…”
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Solution of the radiative transfer equation in an inhomogeneous plane-parallel atmosphere by the decomposition method by Vargas, Rubem M.F., De Vilhena, Marco Tullio M.B.

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Solution of the S N radiative transfer equation in an inhomogeneous plane-parallel atmosphere by the decomposition method by Vargas, Rubem M.F., De Vilhena, Marco Tullio M.B.

“…In this work, we report a closed-form solution for the S N radiative transfer equation in an inhomogeneous plane-parallel atmosphere by the decomposition…”
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Recent advances in the LTSNmethod for criticality calculations in slab geometry by Orengo, Gilberto, de Vilhena, Marco Tullio M.B., Graça, Cláudio O., Caldeira, A.D., Gonçalves, G.A.

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Recent advances in the LTS N method for criticality calculations in slab geometry by Orengo, Gilberto, de Vilhena, Marco Tullio M.B., Graça, Cláudio O., Caldeira, A.D., Gonçalves, G.A.

“…The aim of this work is to present a new approach based upon the application of the LTS N method to solve the eigenvalue problem in a slab, namely the problem…”
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A CLOSED-FORM SOLUTION FOR THE ONE-DIMENSIONAL RADIATIVE CONDUCTIVE PROBLEM BY THE DECOMPOSITION AND LTSN METHODS by VARGAS, RUBEM M.F., DE VILHENA, MARCO TULLIO M.B.

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Convergence of the LTS N method: Approach of C0 semigroups by Pazos, Rubén Panta, de Vilhena, Marco Tullio

“…In this work we report the convergence of the LTS N solution for the steady state using the C 0 semigroup approach first considering that the total cross…”
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LTS sub(N) solution of the adjoint neutron transport equation with arbitrary source for high order of quadrature in a homogeneous slab by Goncalves, Glenio A, Orengo, Gilberto, De Vilhena, Marco Tullio MB, Graca, Claudio O

“…In this work we present the LTS sub(N) solution of the adjoint transport equation for an arbitrary source, testing the aptness of this analytical solution for…”
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LTS N solution of the adjoint neutron transport equation with arbitrary source for high order of quadrature in a homogeneous slab by Gonçalves, Glenio A., Orengo, Gilberto, de Vilhena, Marco Tullio M.B., Graça, Cláudio O.

“…In this work we present the LTS N solution of the adjoint transport equation for an arbitrary source, testing the aptness of this analytical solution for high…”
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