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Showing 1 to 6 of 6 for “"Dinâmica dos fluídos"”.
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Estudo experimental de um termo-oscilador para bombeamento de líquidos
Presents an experimental study of a thérmal pump. This púmp cons_ists of a thermal oscillator formed by a U-tube partially filled with liquid which oscillates deslocating a gas alternately from a hot region to a cold region.Two prototypes were constructed to study the principal factors that …
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Análise experimental do efeito do ângulo de injeção de gás em um escoamento vertical ascendente de líquido
Evaluates the effect of the gas injection angle in a upward vertical liquid flow, regarding the bubble size and shape distributions, as well as liquid velocity profile, both in the injection area. The experiments are carried in a 44 mm acrylic vertical pipe, in which water flows and air is injected …
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Análise termo-hidráulico de vaporizadores com tubos horizontais
A new methodology is presented for thermal-fluid dynamic analysis of vaporizers with horizontal tubes using pure substances as process fluid. A computer program has been developed using FORTRAN 77 in order to implement the new method. Several comparisons have been done to show the validity of the …
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Influência da dissipação viscosa na transferência de calor em tubos concêntricos no escoamento turbulento
The temperature profile for a turbulent flow, of a newtonian fluid flowing between two concentric tubes has been determined. The velocity profile was based on the Deissler and Quarmby equations for turbulent flows. The momentum difusivity equation for the turbulent flow has been evaluated according …
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Um modelo constitutivo para o escoamento através de um arranjo de barras de seção circular
The determination of the flow through a uniform array of rod bundle is made by means of the Continuum Theories of Mixtures, which gives balance equations for the system. The hypotheses of isothermal and fully developed turbulent flow are made. Constitutive equations for the resistive force are …
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Análise de transientes hidráulicos em oleodutos
In order to ensure that the piping and equipment of oil pipelines are not exposed to inadmissible pressures it is necessary to analyse hydraulic transients. The present work presents a computer program (TRANSH), developed by the author for calculating the hydraulic transients relevant to oil …