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Atomic ionization by a sudden momentum transfer
(Elsevier Science, 2009-12)
We present a theoretical study of the distributions of ejected electrons as a result of the ionization of a hydrogen atom by a sudden momentum transfer. We show that the Coulomb–Volkov distorted wave theory in the impulsive ...
Limitations of the strong field approximation in ionization of the hydrogen atom by ultrashort pulses
(Springer, 2009-12)
We present a theoretical study of the ionization of hydrogen atoms as a result of the interaction with an ultrashort external electric field. Doubly-differential momentum distributions and angular momentum distributions ...
Transient non-Darcy forced convective heat transfer from a flat plate embedded in a fluid-saturated porous medium
(1990-09-01)
Transient non-Darcy forced convection on a flat plate embedded in a porous medium is investigated using the Forchheimer-extended Darcy law. A sudden uniform pressure gradient is applied along the flat plate, and at the ...
Transient non-Darcy forced convective heat transfer from a flat plate embedded in a fluid-saturated porous medium
(1990-09-01)
Transient non-Darcy forced convection on a flat plate embedded in a porous medium is investigated using the Forchheimer-extended Darcy law. A sudden uniform pressure gradient is applied along the flat plate, and at the ...
On the space-charge boundary layer inside the nozzle of a cutting torch
(American Institute of Physics, 2009-12)
A numerical study of the space-charge sheath adjacent to the nozzle wall of a cutting torch is presented. The hydrodynamic model corresponds to a collision-dominated sheath and does not assume cold ions, so drift-diffusion-type ...
Avaliação do sistema de arrefecimento por óleo dirigido de um transformador de potência móvel por meio de dinâmica dos fluidos computacional
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA MECÂNICAPrograma de Pós-Graduação em Engenharia MecanicaUFMG, 2022-06-03)
Power transformers represent an important part of capital investment in transmission and distribution substations. The cooling of the windings (electric coil) depends on the heat exchange, which can be intensified by the ...