Search Results - "VILHENA, Marco Túllio de"

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Convergence of the LTSN method : Approach of C0 semigroups by PANTA PAZOS, R, TULLIO DE VILHENA, M

Get full text

An iterative Langevin solution for contaminant dispersion simulation using the Gram–Charlier PDF by CARVALHO, J, NICHIMURA, E, DEVILHENA, M, MOREIRA, D, DEGRAZIA, G

Get full text

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…”
Get full text

An error bound estimate and convergence of the Nodal- LTS N solution in a rectangle by Hauser, Eliete Biasotto, Pazos, Rubén Panta, de Vilhena, Marco Túllio

“…In this work, we report the mathematical analysis concerning error bound estimate and convergence of the Nodal- LTS N solution in a rectangle. For such we…”
Get full text

An error bound estimate and convergence of the Nodal-LTSN solution in a rectangle by Hauser, Eliete Biasotto, Pazos, Rubén Panta, de Vilhena, Marco Túllio

Get full text

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…”
Get full text

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…”
Get full text

A recursive method to invert the LTS N matrix by Brancher, Jacques, Cardona, Augusto, de Vilhena, Marco Túllio

“…In this work it is presented a recursive method to invert the LTS N matrix. Numerical simulations are presented…”
Get full text

Determination of the effective multiplication factor in a slab by the LTSN method by Batistela, Cláudia Helena F., Vilhena, Marco Túllio de, Borges, Volnei

“…The aim of this work is to present a new approach based upon the application of the LTSN method to solve the eigenvalue problem in a slab, namely the problem…”
Get full text

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…”
Get full text

Criticality by the LTS N Method by BATISTELA, Cláudia Helena F., VILHENA, Marco Túllio de, BORGES, Volnei

Get full text

A recursive method to invert the LTSN matrix by BRANCHER, J, CARDONA, A, TULLIO DE VILHENA, M

Get full text

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.

Get full text

An approach to boundary integral element via Fourier transforms by Furtado, Gilnei Gonçalves, Túllio de Vilhena, Marco, Strohaecker, Telmo Roberto

“…In this work we present a closed-form solution for a general linear partial differential equation with constant coefficients defined over a finite domain,…”
Get full text