Results 261 to 270 of about 93,819 (310)

Bulk transfer coefficient for heat transfer

Journal of Geophysical Research, 1969
A bulk heat-transfer relation applicable to unstable conditions is proposed. The relation incorporates the assumptions that heat transfer near the surface is by molecular conduction, and the bulk transfer relation does not depend explicitly on the surface roughness characteristics, provided that roughness elements are not large in comparison with the ...
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Measurement of the Heat Transfer Coefficient

2017
The design of the experimental apparatus and the data collection procedure are discussed. The variation of Rayleigh number, Peclet number, Darcy number, dimensionless height ratio, and dimensionless heater length are accounted for in the design of the experimental apparatus.
John M. Dixon, Francis A. Kulacki
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Mass and heat transfer coefficients

2013
In a blood oxygenator, the blood spends approximately 2 s passing through the device. Estimate a minimum value for h m , the mass transfer coefficient characterizing oxygen transport from the plasma to the inside of a red blood cell (RBC), such that the RBCs are completely (i.e.
Mark Johnson, C. Ross Ethier
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MEASUREMENT OF THE HEAT TRANSFER COEFFICIENT IN A THAWING TUNNEL

Journal of Food Process Engineering, 1998
ABSTRACT In a convective (air) thawing tunnel designed in the department of Food Engineering at Lund, and previously applied for the thawing of meat, we have measured the heat transfer coefficient using an ice model with a geometry which could be approximated to an infinite slab.
Gekas, V., Chronakis, I. S., Escada, C., Sjöholm, I.   +3 more
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A Correlation for Heat Transfer Coefficients in Food Extruders

Biotechnology Progress, 1986
AbstractA dimensionless correlation of heat transfer coefficient for heat flow between the extruder barrel wall and extrudate is presented. The standard error of estimate of the correlation is 12.4%. The correlation is useful for the design and scale‐up of food extruders and the design of associated temperature control systems.
L, Levine, J, Rockwood
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Heat and mass transfer coefficients of viscous spheres

International Journal of Heat and Mass Transfer, 2001
Abstract The problem of mass/heat transfer from a viscous droplet is solved by using a finite-difference scheme, and a dual kind of computational grid. The steady-state Navier–Stokes and energy equations for the flow fields inside and outside a viscous sphere in a fluid of different properties are fully solved numerically for Reynolds numbers ( Re ...
Feng, Zhi-Gang, Michaelides, Efstathios E.   +1 more
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Measurement of Heat Transfer Coefficients

2013
In this chapter, measurements of steady-state Nusselt numbers in superposed fluid-porous layers with η < 1 and δ < 1 are discussed and compared to computed values. These measurements point to the need for more exhaustive experimentation over an extended range of Rayleigh number, but they also provide entirely new data for that case where δ < 1 and η ...
Aniruddha Bagchi, Francis A. Kulacki
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Determination of the surface heat‐transfer coefficient in CE

ELECTROPHORESIS, 2009
AbstractA knowledge of the heat‐transfer coefficient, hs, for the external surface of the capillary or the overall heat coefficient, hOA, is of great value in predicting the mean increase in temperature of the electrolyte, ΔTMean, during electrokinetic separations. For CE, traditional indirect methods of determining hs were time‐consuming and tended to
Vlastimil, Hruska, Christopher J, Evenhuis, Rosanne M, Guijt, Miroslav, Macka, Bohuslav, Gas, Philip J, Marriott, Paul R, Haddad   +6 more
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Determination of the stress jump coefficient, the interstitial heat transfer coefficient and the interface heat transfer coefficient in a porous composite system

International Journal of Heat and Mass Transfer, 2017
Abstract In this work, the microscopic and macroscopic models of the porous composite system are established to study the stress jump coefficient, the interstitial heat transfer coefficient and the interface heat transfer coefficient under the local thermal non-equilibrium condition.
Kun Yang, Hao Chen, Wei Liu
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Heat Conduction at a Variable Heat-Transfer Coefficient

High Temperature, 2019
Some practically important problems of unsteady heat conduction with a time-variable relative heat-transfer coefficient are considered. Various approaches to finding a solution to the analytical problem are systematized: decomposition of the generalized integral Fourier transform, the serial expansion of a sought temperature function, and the reduction
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