منابع مشابه
Helium cryostat for experimental study of natural turbulent convection.
Published experiments on natural turbulent convection in cryogenic (4)He gas show contradictory results in the values of Rayleigh number (Ra) higher than 10(11). This paper describes a new helium cryostat with a cylindrical cell designed for the study of the dependence of the Nusselt number (Nu) on the Rayleigh number (up to Ra approximately 10(15)) in order to help resolve the existing controv...
متن کاملExperimental and Numerical Investigations of Natural Convection in Freezing Water
Thermal convection in a lid cooled cavity with phase change was studied experimentally and numerically. The ow and ice front structures, and their dependence on the ow parameters (Rayleigh number) were investigated. In the experiment, the onset of convection in an initially isothermal uid (water) in a 383838mm plexiglas box, which is instantaneously cooled from isothermal top wall to a temperat...
متن کاملExperimental and Numerical Study of Three-dimensional Natural Convection and Freezing in Water
In this paper we describe an experimental and numerical investigation of the response of an initially isothermal uid in a cubical box to an instantaneous cooling of the upper surface of the box. The other ve surfaces are neither adiabatic nor ideal heat conductors. When the lid temperature drops below 0 o C, ice begins to form on the top wall. The onset of convection in such a problem was inves...
متن کاملExperimental Study of Natural Convection Cooling of Vertical Cylinders with Inclined Plate Fins
Abstract: In this paper, natural convection from vertical cylinders with inclined plate fins is investigated experimentally for use in cooling electronic equipment. Extensive experimental investigations are performed for various inclination angles, fin numbers, and base temperatures. From the experimental data, a correlation for estimating the Nusselt number is proposed. The correlation is appl...
متن کاملA Numerical Study of Natural Convection and Radiation Interaction in Vertical Circular Pin
A numerical finite difference study has been earned out for two dimensional radiation-natural convection interaction phenomena in a vertical circular pin located at a non-participating (i.e. transparent) fluid. The coupled conservation equations in boundary layer (continuity, momentum, and energy equations) and pin energy equation are solved simultaneously using modified box method and fully im...
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ژورنال
عنوان ژورنال: Global Journal of Pure and Applied Sciences
سال: 2015
ISSN: 1118-0579
DOI: 10.4314/gjpas.v21i2.8