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Showing 1 to 20 of 35 for “"Free convection"”.
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Free convection and turbulent fluxes over complex terrain
… exchange is investigated in this thesis. Here, free convection, a very effective vertical transport mechanism as turbulence is predominantly driven by buoyant forces, is explicitly addressed. Recently, it was shown for certain situations over complex terrain that free convective injections of …
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Free-Convection Heat Transfer in Laminar Boundary-Layers
Made available in DSpace on 2014-12-10T22:48:25Z (GMT). No. of bitstreams: 1 7500356.pdf: 7490531 bytes, checksum: 4ab7702e395b9c4bbd758519d04ca551 (MD5) Previous issue date: 1974
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Aspects of laminar free convection from a vertical plate
… aspects pertaining to the phenomenon of laminar free convection from a vertical plate. A survey of literature is presented which brings out the fact, that the phenomenon although it has been investigated to a large extent, still gives rise to widespread dispute and uncertainties which need …
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Effect of Free Convection on Laminar Flow Through a Horizontal Pipe
Made available in DSpace on 2014-12-08T23:18:23Z (GMT). No. of bitstreams: 1 6901450.pdf: 5598716 bytes, checksum: ed791d0859e0e76a94960531f9d1f857 (MD5) Previous issue date: 1968
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Local free convection to non-Newtonian fluids from a horizontal, isothermal cylinder
… and speculation regarding this natural or free convection behavior dates back centuries. However, as Jakob (13) reveals, it was not until 1817 when Dulong and Petit's (15) observations were published, that the precise relationship between the quantity of heat transferred and the …
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On the solution of external laminar free convection to power law fluids
"Pseudoplastic fluids (power law fluid index N [less than] 1), dilatant fluids (N>1), and even Newtonian fluids (N=1) are commonly called power laws fluids, because they show an empirical shear stress (T)-strain rate (relationship known as the power law where N and m are empirical constants …
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Laminar free convection heat transfer in a vertical channel with linear wall temperatures
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1961.
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Unsteady free convection on a horizontal circular cylinder in the presence of heat generation and radiation
The unsteady free convective flow about a horizontal circular cylinder in the presence of heat generation and radiation is considered in this thesis. The cylinder is fixed and immersed in a Newtonian fluid, while the temperature at the surface is either heated uniformly or oscillated harmonically …
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Heat transfer to liquid metals, with observations on the effect of super-imposed free convection in turbulent flow
Evaluation of the different theories of heat transfer to liquid metals requires values of the ratio of eddy diffusivities of heat and momentum, which may be obtained from temperature and velocity profiles measured in the flowing liquid metal. Temperature profiles have been reported by a number of …
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Effect of gravity-induced free convection upon the melting phenomena of a finite paraffin slab for thermal control, The
Includes bibliographical references.
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Ebulição nucleada em placa plana horizontal com baixos fluxos de calor
… state. Levels of heat flux are regulated so that free convection and then nucleate boiling are observed. The value of heat flux is determined experimentally and high speed film is used to register bubble growth. ln order to explain the phenomenon a theoretical model for the heat transfer mechanism …
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Mixed convection and heat management in the Mars gravity biosatellite
… creates the tendency for heated air to move by free convection toward the axis of rotation. Dominance of forced convection throughout the payload module will ensure nearly isothermal air and effective heat rejection from the payload to the bus module via fan/heatsink/thermoelectric cooler units. …
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Η ΔΟΜΗ ΤΟΥ ΤΥΡΒΩΔΟΥΣ ΠΕΔΙΟΥ ΘΕΡΜΟΚΡΑΣΙΑΣ ΠΑΝΩ ΑΠΟ ΘΕΡΜΑΙΝΟΜΕΝΕΣ ΕΠΙΦΑΝΕΙΕΣ
… ARE PRESENTED, CONSERNING THE STRUCTURE OF THE FREE CONVECTION TURBULENT TEMPERATURE FIELD, CREATED ABOVE A HEATED PLANE, IN RELATION TO LARGE SCALE STRUCTURES. TWO CONFIGURATIONS WERE EXAMINED NAMELY, THE HORIZONTAL AND THAT INCLINED AT 45 DEGREES. SINCE THE FLOW ABOVE THE HORIZONTAL PLATE IS …
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A heat transfer model applicable to the refuelling process for natural gas vehicles
… process can be divided into three phases: forced convection, free convection and conduction. The experimental results were used to develop empirical equations for convection between the gas and the tank for both the forced and free convection phases. In addition, a simulation method was developed …
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Forced convection heat transfer from extended surfaces with finned pins
… the film coefficient "h" by means of forced convection the heat transfer rate of a finned pin can be considerably improved. For an average flow rate of air over the extended surfaces, throughout the investigation the increase in the effectiveness was as much as 4.60 times over the free …
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Estudo analítico da convecção natural junto a uma placa inclinada para números de Prandtl baixos
… work performs a perturbation analysis of laminar free convection about an inclined isothermal plate, using the classical boundary layer solution as the zeroth-order perturbation. The analysis is extended to second-order perturbations and the effects of the additional terms considered in the …
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Velocity and temperature distributions for mercury in turbulent flow
… numbers are shown to be strongly influenced by free convection effects. Correlations are presented whereby the amount of distortion of the velocity profile from the isothermal profile under given conditions may be estimated, and the value of the Nusselt number under given conditions may be …
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