Wyniki wyszukiwania - BazTech

1

The impact of radiation effect on MHD stagnation-point flow of a nanofluid over an exponentially stretching sheet in the presence of chemical reaction

Narender G., Sarma G. S., Govardhan K.

International Journal of Applied Mechanics and Engineering

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2019

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Vol. 24, no. 4

125--139

EN

The present study is to investigate the effect of the chemical reaction parameter on stagnation point flow of magnetohydrodynamics field past an exponentially stretching sheet by considering a nanofluid. The problem is governed by governing coupled nonlinear partial differential equations with appropriate boundary conditions. The transformed non-dimensional and coupled governing ordinary differential equations are solved numerically using the fourth order Adams-Bashforth Moulton method. The effects of various dimensionless parameters on velocity, temperature and concentration fields are studied and then the results are presented in both tabular and graphical forms.

2

Effects of Radiation and Porosity of the Medium on MHD Flow Past an Inclined Plate in the Presence of Hall Current

Rajput U. S., Kumar G.

Computational Methods in Science and Technology

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2017

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Vol. 23, No. 2

93--103

EN

The present study deals with an analysis of the effects of radiation and porosity of the medium on unsteady natural convection flow of a viscous, incompressible and electrically conducting fluid past an impulsively started inclined plate under the influence of transversely applied uniform magnetic field and Hall current. The medium of the flow is taken as porous. The governing equations involved in the present analysis are solved by the Laplace-transform technique. The results obtained are discussed with the help of graphs drawn for different parameters like thermal Grashof number, mass Grashof Number, Prandtl number, Hall current, radiation, permeability, magnetic field parameter and Schmidt number. The numerical values obtained for skin-friction and Nusselt number have been tabulated. The objective of this study is to analyze radiation and the porosity of the medium in the MHD flow model. In the study we found that the velocity in the boundary layer increases with the values of radiation and porosity of the medium. It is also observed that radiation and porosity of the medium increases the skin-friction at the wall surface. The results of the study are found to be in agreement with the actual flow. The importance of the problem can be seen in cooling of electronic components of a nuclear reactor, bed thermal storage and heat sink in the turbine blades.

3

Opracowanie mobilnego systemu pomiaru promieniowania UV do oceny indywidualnej dawki napromieniowania

Andrzejewski M., Wlazło P.

Elektronika : konstrukcje, technologie, zastosowania

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2013

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Vol. 54, nr 4

101-103

PL

Przedstawiono rozwiązanie ergonomicznego i przenośnego miernika promieniowania UV, który może być stosowany w komorach naświetlających oraz na świeżym powietrzu. Omówiono energooszczędne możliwości miernika, jego tryby pracy oraz analogowe moduły pomiarowe.

EN

In the paper ergonomic and mobile UV meter has been presented. It can be used outdoors and inside radiation chamber. Energy-efficient aspects, working modes and analog meter module has been discussed.