Results 261 to 270 of about 41,996 (315)
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Natural Convection at Microelectrodes
Analytical Chemistry, 1995Abstract : Steady-state voltammetric currents for Fe(CN)6(-4) oxidation and Fe(CN)6(-3) reduction in 0.2 M KCl solutions are shown to be a function of the orientation of Au and Pt rnicrodisk electrodes (radius = 6.4 to 25 micrometers) with respect to the gravitational field.
Jeonghee Lee +2 more
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EXPERIMENTAL TECHNIQUES IN NATURAL CONVECTION
Experimental Thermal and Fluid Science, 1993Experimental techniques in natural convection heat transfer employed in the author's laboratory are introduced. The techniques are mostly related to visualization of flow, temperature field, and heat flux distribution in fluids. Three topics are presented, the first being natural convection in a horizontal rectangular liquid layer driven by surface ...
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Modeling of natural convection
2016 2nd International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2016Numerical simulation with ANSYS Fluent, Code Saturne and OpenFOAM is compared in terms of the problem of natural convection in enclosed volume of air in the presence of a heating element. A comparative analysis of software on the basis of three turbulence models (k-e, SST and WALE) is conducted. The results adequacy is assessed.
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Natural convection in droplet evaporation
Physical Review E, 1996Although droplet evaporation is widely assumed to be a diffusion process, our results show that when a droplet evaporates sufficiently fast it exhibits a vigorous interior flow. This flow is driven by surface tension gradients. The typical interior flow field behavior is shown as well as measurements of the droplet surface area and volume as it ...
John Hegseth, A. Chai, N. Rashidnia
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2015
As opposed to a forced convection flow where external means are used to provide the flow, the free-convection flow field is a self-sustained flow driven by the presence of a temperature gradient.
Bahman Zohuri, Nima Fathi
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As opposed to a forced convection flow where external means are used to provide the flow, the free-convection flow field is a self-sustained flow driven by the presence of a temperature gradient.
Bahman Zohuri, Nima Fathi
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NATURAL CONVECTION IN A SEMIELLIPTIC CAVITY
Numerical Heat Transfer, 1987Natural convective steady-state motion inside a bidimensional semielliptic cavity is investigated numerically by means of a finite-element algorithm. The ceiling of the cavity is kept at a known temperature with a sinusoidal spatial distribution and the floor is assumed thermally insulated.
Ernesto Martín del Campo +2 more
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Natural convection of a viscoelastic fluid [PDF]
Rheologica Acta, 1982 The influence of elasticity and shear thinning viscosity on the temperature distribution and heat transfer in natural thermal convection is discussed. The numerical investigations are based on a four-parameter Oldroyd constitutive equation, which represents the typical fluid response of dilute solutions and melts.
K.-J. Röpke, P. Schümmer
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1995
Aquifers are being used more and more as heat reservoirs. Thermopumps provide energy for heating and, in the case of solar installations, the energy is stored in groundwater during summer to be used in winter. But groundwater has to be protected against the excessively high temperatures which modify water quality, and against chemical pollutants ...
E. Recordon, D. Bovet
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Aquifers are being used more and more as heat reservoirs. Thermopumps provide energy for heating and, in the case of solar installations, the energy is stored in groundwater during summer to be used in winter. But groundwater has to be protected against the excessively high temperatures which modify water quality, and against chemical pollutants ...
E. Recordon, D. Bovet
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On the convective nature of bar instability
Journal of Fluid Mechanics, 2003Bar instability is recognized as the fundamental mechanism underlying the formation of large-scale forms of rivers. We show that the nature of such instability is convective rather than absolute. Such a result is obtained by revisiting the linear stability analysis of open-channel uniform flow over a cohesionless channel of Colombini et al.
FEDERICI, BIANCA, SEMINARA, GIOVANNI
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On the Problem of Natural Convection
1991The problem of natural convection in a horizontal layer of viscous thermally conducting fluid heated from below (Benard problem) is relevant in many physical situations and, in particular, in geophysics and astrophysics. Our goal is to give an account of the questions arising in the determination of the critical value that the Rayleigh number must ...
S. Rionero, B. Straughan
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